CN104869106A - Sound recording method, voice switching equipment, sound recording server and sound recording system - Google Patents

Abstract

The invention discloses a recording method, a voice exchange device, a recording server and a recording system. The method includes: before receiving the recording server's start recording response, the voice exchange device saves the first media stream generated after the audio mixing process In the cache; after receiving the start recording response from the recording server, the voice switching device sends the second media stream generated after the audio mixing to the recording server; the voice switching device sends the first media stream stored in the cache to the recording server, After receiving the first media stream and the second media stream, the recording server performs combined recording on the first media stream and the second media stream. Through the above method, the present invention can prevent the loss of the recording before the recording server is ready for recording, so that a complete recording can be obtained.

Description

Recording method, voice switching device, recording server and recording system

technical field

The invention relates to the technical field of communication, in particular to a recording method, a voice exchange device, a recording server and a recording system.

Background technique

In Unified Communications and Call Center (UC&CC, Unified Communication & CallCenter) application scenarios, it is often necessary to record users' point-to-point calls and conference calls on demand. During the call, the user presses the button on the IP phone to start recording, and the IP phone sends a recording request to the voice exchange (IP-PBX, IP Private Branch eXchange) based on the IP network. When the communication terminals of the call are all in the venue , the IP-PBX adds the recording server to the venue in the way of "only listening but not talking", and sends a recording start request to the recording server, and after receiving the recording start response returned by the recording server, it responds to the call from the communication terminal The media stream is mixed, and the mixed media stream is sent to the recording server, and the recording server obtains the media stream and records it, thereby realizing recording.

However, during the process from the IP-PBX receiving the recording request to the start recording response sent by the recording server, many signaling interactions are involved. Media streaming, so recording is not possible.

Contents of the invention

The technical problem mainly solved by the present invention is to provide a recording method, a voice exchange device, a recording server and a recording system, which can prevent the loss of the recording before the recording server is ready for recording, so that a complete recording can be obtained.

In a first aspect, the present invention provides a method for recording, the method comprising: a voice switching device receiving a recording request from a first communication terminal, and the first communication terminal communicates with other communication terminals through the voice switching device; When the voice switching device receives the recording request, it mixes the currently received media stream from the first communication terminal and the media stream from the other communication terminals, and mixes the generated media stream Stored in the cache as the first media stream; the voice switching device adds the recording server to the conference site created by the voice switching device and includes the first communication terminal and the other communication terminals; the voice switching device sends The recording server sends a recording start request; after the voice switching device receives the recording start response from the recording server, it performs the current reception of the media stream from the first communication terminal and the media stream from the other communication terminals. Perform audio mixing, send the media stream generated by the audio mixing as a second media stream to the recording server, and send the first media stream stored in the cache before receiving the start recording response to the recording server , so that the recording server performs combined recording of the first media stream and the second media stream.

In a first possible implementation manner of the first aspect, the method further includes: when the voice switching device receives the recording request, creating the cache.

With reference to the first aspect or the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, the method further includes: the voice switching device receives the recording start response stop saving the media stream generated by the mixdown in the cache.

With reference to any one of the possible implementation manners from the first aspect to the second aspect of the first aspect, in a third possible implementation manner of the first aspect, the media packets in the first media stream are identified with sequence numbers, In order for the recording server to record the media packets in the first media stream in chronological order according to the serial number identifier.

In a second aspect, the present invention provides a method for recording, the method comprising: the recording server joins a conference site created by a voice switching device that includes a first communication terminal and other communication terminals, and the first communication terminal and the other communication terminals Communicate through the voice switching device; the recording server receives the start recording request sent by the voice switching device and sends a start recording response to the voice switching device; after sending the start recording response to the voice switching device, the recording server receives A first media stream and a second media stream from the voice switching device, the first media stream is the voice switching device receiving the recording start response from the first communication terminal and the other A media stream generated after the media stream of the communication terminal is mixed and processed, the second media stream is the voice switching device receiving the recording start response from the first communication terminal and the other communication terminal. The media stream is generated after the media stream is mixed; the recording server combines and records the first media stream and the second media stream.

In a third aspect, the present invention provides a voice switching device, which includes: a receiving module, a sound mixing module, a saving module, a joining module, a first sending module, a second sending module, and a third sending module; The receiving module is used to receive the recording request from the first communication terminal and the start recording response from the recording server, and the first communication terminal communicates with other communication terminals through the voice switching device; the mixing module is used for receiving When the recording request is received, mix the currently received media stream from the first communication terminal with media streams from the other communication terminals; the saving module is used to receive the After the recording request, before receiving the start recording response, the media stream generated by the mixing module is stored in the cache as the first media stream; the adding module is used to add the recording server to the voice exchange device to create In the venue that includes the first communication terminal and the other communication terminals; the first sending module is used to send a recording start request to the recording server; the second sending module is used to receive the recording request at the receiving module After the start recording response, send the media stream generated by the current mixing of the mixing module to the recording server as the second media stream; the third sending module is used to receive the start After the recording response, the first media stream stored in the cache is sent to the recording server, so that the recording server performs combined recording of the first media stream and the second media stream.

In a first possible implementation manner of the third aspect, the voice exchange device further includes a creating module, configured to create the cache when receiving the recording request.

With reference to the third aspect or the first possible implementation manner of the third aspect, in the second possible implementation manner of the third aspect, the saving module is further configured to stop recording the audio recording when receiving the recording start response. The media stream generated by the audio is stored in the cache.

In combination with the third aspect to the second possible implementation of the third aspect, in the third possible implementation of the third aspect, the media packets in the first media stream are marked with sequence numbers, so that the The recording server records the media packets in the first media stream in time order according to the serial number identification.

In a fourth aspect, the present invention provides a recording server. The recording server includes: a joining module, a first receiving module, a sending module, a second receiving module, a third receiving module, and a combined recording module; the joining module is used to join In the conference site created by the voice switching device that includes the first communication terminal and other communication terminals, the first communication terminal and the other communication terminals communicate through the voice switching device; the first receiving module receives the voice switching A recording start request sent by the device; the sending module is configured to send a recording start response to the voice switching device after the first receiving module receives the recording start request sent by the voice switching device; the second receiving module It is configured to receive a second media stream from the voice switching device after the sending module sends a start recording response to the voice switching device, and the second media stream is that the voice switching device receives the start recording response. After the recording response, the media stream generated after performing mixing processing on the media streams from the first communication terminal and the other communication terminals; the third receiving module is used to send the voice switching device to the voice switching device in the sending module After starting the recording response, receiving the buffered first media stream from the voice switching device, the first media stream is the voice switching device's response to the first communication terminal and the first media stream before receiving the recording start response. The media stream generated after the media stream of the other communication terminal is mixed; the combined recording module is used for the second media stream received by the second receiving module and the first media received by the third receiving module streams for combined recording.

In a fifth aspect, the present invention provides a recording system, the system comprising: a voice switching device and a recording server; the voice switching device is used to receive a recording request from a first communication terminal, and the first communication terminal communicates with other The terminal communicates through the voice switching device; when receiving the recording request, mix the currently received media stream from the first communication terminal and the media stream from the other communication terminals, and mix the The media stream generated by the voice is stored in the cache as the first media stream; the recording server is added to the conference site created by the voice exchange device and includes the first communication terminal and the other communication terminals; a start is sent to the recording server recording request; after receiving the start recording response from the recording server, mix the currently received media stream from the first communication terminal and the media stream from the other communication terminals, and mix the generated media The stream is sent to the recording server as the second media stream, and the first media stream stored in the cache before receiving the start recording response is sent to the recording server, so that the recording server can The first media stream and the second media stream are combined and recorded; the recording server is used to join the conference site created by the voice exchange device and include the first communication terminal and other communication terminals, and the first communication terminal and the other communication terminals The communication terminal communicates through the voice switching device; receiving the recording start request sent by the voice switching device and sending a recording start response to the voice switching device; after sending the recording start response to the voice switching device, receiving The first media stream and the second media stream of the voice switching device, the first media stream is the first media stream from the first communication terminal and the other communication terminals before the voice switching device receives the recording start response The media stream is generated after the media stream is mixed, and the second media stream is the media stream from the first communication terminal and the other communication terminals after the voice switching device receives the recording start response. A media stream generated after the stream is mixed and processed; the first media stream and the second media stream are combined and recorded.

The beneficial effects of the present invention are: different from the situation of the prior art, before the present invention receives the start recording response from the recording server, the voice switching device stores the first media stream after the audio mixing in the cache; After the server starts the recording response, the voice switching device sends the mixed second media stream to the recording server; the voice switching device sends the first media stream stored in the cache to the recording server, and the recording server receives the first media stream and After the second media stream, merge and record the first media stream and the second media stream. In this way, the loss of the recording before the recording server is ready for recording can be prevented, so that a complete recording can be obtained.

Description of drawings

FIG. 1 is a schematic diagram of a network structure of a typical scene of recording a point-to-point call in the prior art;

Fig. 2 is a schematic diagram of a network structure of a scene where the recording method of the present invention records a point-to-point conference call;

Fig. 3 is a flowchart of an embodiment of the recording method of the present invention;

Fig. 4 is the flowchart of another embodiment of recording method of the present invention;

Fig. 5 is a flowchart of another embodiment of the recording method of the present invention;

Fig. 6 is a flow chart of the interaction between network elements in the networking of the point-to-point application scenario of the recording method of the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of the voice switching device of the present invention;

Fig. 8 is a schematic structural diagram of another embodiment of the voice switching device of the present invention;

Fig. 9 is a schematic structural diagram of an embodiment of the recording server of the present invention;

Fig. 10 is a structural schematic diagram of an embodiment of the recording system of the present invention;

Fig. 11 is a schematic diagram of the physical structure of another embodiment of the voice exchange device of the present invention;

Fig. 12 is a schematic diagram of the physical structure of another embodiment of the recording server of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to FIG. 1, FIG. 1 is a schematic diagram of a network structure of a typical point-to-point call recording scene in the prior art. During a call, the user presses a button on the IP phone 11 to start recording, and the IP phone 11 sends a recording request to the IP- PBX12 and IP-PBX12 create a conference site and add the user's IP phone and another user's IP phone to the conference site. IP-PBX12 sends an Invite message to the SIP signaling server 13 to invite the recording server 14 to join the conference site. The SIP signaling server 13 Select the appropriate recording server 14 in the recording server cluster, and reply the IP address of the recording server 14 to IP-PBX12 in the 200OK message, IP-PBX12 will add the recording server 14 to the venue, and IP-PBX12 sends the SIP INFO message to the SIP signaling The server 13 notifies the recording server 14 to start the recording. After the IP-PBX 12 receives the 200 OK response from the recording server 14 to start the recording through the SIP signaling server 13, the IP-PBX 12 mixes the media streams from both parties in the meeting place. The generated media stream is sent to the recording server 14, and the recording server 14 acquires the media stream and records the media stream, thereby realizing recording. During the process from when the IP-PBX12 receives the recording request to when the IP-PBX receives the recording start response sent by the recording server 14, many signaling interactions are involved. During this period, the recording server 14 cannot obtain the The media stream is lost in the process, making the recording incomplete.

Referring to FIG. 2 , FIG. 2 is a schematic diagram of a network structure of a scene where the recording method of the present invention records a point-to-point call. In the method of the present invention, the IP-PBX 21 creates a conference site, adds the IP phone that initiated the recording request and another IP phone into the conference site, and creates a cache 22 for this recording at the same time. IP-PBX21 sends Invite message to SIP signaling server 23, invites recording server 24 to join the venue, SIP signaling server 23 selects suitable recording server 24 in the recording server cluster, and the IP address of recording server 24 is replied in 200OK message For IP-PBX21, IP-PBX21 adds recording server 24 to the venue, IP-PBX21 sends SIP INFO message to SIP signaling server 23, and notifies recording server 24 to start recording. Among them, before the IP-PBX21 receives the start recording response from the recording server 24, the IP-PBX21 mixes the media streams from both sides of the call, and sends the mixed media streams to the cache 22; the recording server 24 joins the After the conference, the IP-PBX 21 directly sends the media stream generated by both parties in the conference to the recording server 24 through the IP address of the recording server 24 through the audio mixing process, and does not send it to the cache 22 any more. The IP-PBX 21 sends the media stream stored in the cache 22 to the recording server 24 . Therefore, after the recording server receives the media stream, the recording before the recording server is ready for recording can not be lost, thereby realizing complete recording.

Fig. 3 is the flow chart of one embodiment of recording method of the present invention, and this embodiment is the flow chart of voice switching equipment end, comprises:

Step S101: the voice switching device receives a recording request from the first communication terminal, and the first communication terminal communicates with other communication terminals through the voice switching device.

The voice switching device is a network device used for voice and electrical signal forwarding. Its main function is to handle user registration, call, outgoing relay, create a conference site, and command interaction with the recording server.

The first communication terminal is a communication terminal that actively initiates a recording request, and the other communication terminals are communication terminals that participate in the recording process except for the first communication terminal. When communicating through a conference call created on the voice switching device, there are generally at least two other communication terminals; when performing point-to-point communication through the voice switching device, there is one other communication terminal.

When the first communication terminal sends a recording request to the voice switching device, the voice switching device receives the recording request from the first communication terminal, wherein the first communication terminal communicates with other communication terminals through the voice switching device.

Step S102: When the voice switching device receives the recording request, it mixes the currently received media stream from the first communication terminal and media streams from other communication terminals, and uses the media stream generated by the mixing as the first media stream stored in the cache.

The first media stream is a media stream generated by the voice switching device after mixing the media stream from the first communication terminal and the media streams from other communication terminals before receiving the recording start response from the recording server.

Before the voice switching device receives the start recording response from the recording server, the recording server is not ready for recording. But the first communication terminal and other communication terminals have already started a conversation, and the voice switching device saves the first media stream in the cache, which can prevent the loss of the media stream before the recording server is ready for recording, wherein the cache is created in advance .

Step S103: the voice switching device adds the recording server to the conference site created by the voice switching device including the first communication terminal and other communication terminals.

The recording server is a device that obtains media streams and realizes user recording. After receiving the recording request from the first communication terminal, the voice switching device needs to add a recording server to the conference site to realize the recording. The conference site is created by the voice switching device, and includes the first communication terminal and other communication terminals. If it is a point-to-point conversation, after the voice switching device receives the recording request from the first communication terminal, the voice switching device creates a site, and adds the first communication terminal and other communication terminals to the site; if it is a conference call, the site is before the conference call starts The already created site is the conference site. After the voice switching device receives the recording request from the first communication terminal, there is no need to create another site.

Specifically, the voice exchange device sends an Invite message to the signaling server to invite the recording server to join the venue, the signaling server selects a suitable recording server in the recording server cluster, and replies the IP address of the recording server to the voice exchange in a 200OK message Device, the voice exchange device will add the recording server to the venue.

The signaling server is used to process the signaling and recording instructions from the voice exchange equipment, and is also responsible for the interaction with the recording server.

Wherein, the voice switching device is a voice switching device based on an IP network, and the signaling server is a SIP signaling server. Of course, the signaling server may also be a signaling server of the H.323 protocol, which is not limited here.

Certainly, the function of the signaling server for signaling interaction can also be integrated on the recording server, so that the voice switching device directly performs signaling interaction with the recording server.

Step S104: the voice switching device sends a recording start request to the recording server and receives a recording start response sent by the recording server.

Specifically, after the recording server joins the conference site, the voice switching device sends a recording start request to the recording server, so that the recording server can prepare for the recording (eg, reserve recording resources for the recording). For example, the specific implementation of step S104 is as follows: the voice switching device sends a SIP INFO message to the signaling server to notify the recording server to start recording, and the signaling server sends a message notifying the recording server to start recording to the recording server, and the signaling server receives the recording After the recording start response of the server, the recording start response of the recording server is sent to the voice switching device through a 200OK message, and the voice switching device can determine that the recording server is ready for recording after receiving the recording start response of the recording server.

Specifically, during the process of adding the recording server to the conference site, the recording start request and the recording start response are sent through signaling interacted when the recording server is added to the conference site. For example, the specific implementation of step S104 is as follows: the voice switching device carries an instruction to start recording through the SIP INVITE message that invites the recording server to join the venue, and the signaling server sends a message notifying the recording server to start recording to the recording server. After the start recording response of the SIP INVITE 200OK message, the recording server’s start recording response is sent to the voice switching device. After receiving the 200 OK message, the voice switching device completes the process of adding the recording server to the venue and confirms the recording The server is ready for recording.

Step S105: After receiving the recording start response from the recording server, the voice switching device mixes the currently received media stream from the first communication terminal and media streams from other communication terminals, and uses the media stream generated by the mixing as The second media stream is sent to the recording server.

The second media stream is a media stream generated by the voice switching device after receiving the recording start response from the recording server and performing mixing processing on the media stream from the first communication terminal and the media streams from other communication terminals.

After the voice switching device receives the recording start response from the recording server, the recording server is ready for recording. The voice switching device mixes the currently received media stream from the first communication terminal and media streams from other communication terminals, and at this time, sends the media stream generated by the mixing as the second media stream to the recording server.

Step S106: The voice switching device sends the first media stream stored in the cache before receiving the recording start response to the recording server, so that the recording server can perform combined recording of the first media stream and the second media stream.

During the time when the recording server is not ready for recording, the first media stream is stored in the cache. In order to facilitate the recording server to obtain a complete media stream, the voice switching device sends the first media stream stored in the cache to the recording server, so that Combine and record the first media stream and the second media stream at the recording server. Step S106 can be implemented in multiple ways, for example, the voice switching device sends the first media stream and the second media stream at the same time, and the recording server combines the first media stream and the second media stream and records them into one recording file; , the voice switching device first sends the second media stream and then the first media stream, and the recording server records the first media stream and the second media stream respectively into one recording file, and merges the two recording files into one recording file.

Referring to Fig. 4, the recording method of the present invention also includes:

Step S107: the voice switching device creates a cache when receiving the recording request.

Cache refers to the temporary file exchange area, which has an extremely fast access rate. It is a buffer between internal storage and external interfaces.

Wherein, the cache is a first-in-first-out FIFO cache. FIFO cache means that when the cache is read, the data that is first written into the cache is read out first. In this way, caching can be managed automatically.

A voice switching device creates a cache when it receives a recording request. For example: it may be created after receiving a recording request from the first communication terminal. Of course, it may also be created before receiving the recording request from the first communication terminal, which is not limited here.

Step S108: the voice switching device stops storing the media stream generated by the audio mixing in the cache when receiving the recording start response.

After receiving the start recording response from the recording server, the recording server is ready for recording. Therefore, the voice switching device can stop saving the media stream generated after the audio mixing process in the cache, and directly store the media stream generated after the audio mixing process The stream is sent to the recording server as a second media stream. In this way, the storage space of the cache can be avoided from being wasted.

Wherein, the media packets in the first media stream are marked with sequence numbers, so that the recording server can record the media packets in the first media stream in chronological order according to the sequence numbers.

Wherein, the media stream is a real-time transport protocol RTP media stream.

In the present invention, before receiving the recording start response from the recording server, the voice switching device stores the first media stream generated after the audio mixing process in the cache; The second media stream generated later is sent to the recording server; the voice switching device sends the first media stream stored in the cache to the recording server, so that the recording server can combine and record the first media stream and the second media stream. In this way, the loss of the recording before the recording server is ready for recording can be prevented, so that a complete recording can be obtained.

Referring to Fig. 5, Fig. 5 is a flow chart of another embodiment of the recording method of the present invention, and this embodiment is a flow chart of the recording server end, including:

Step S301: The recording server joins the conference site created by the voice switching device and includes the first communication terminal and other communication terminals, and the first communication terminal and other communication terminals communicate through the voice switching device.

The recording server is a device that obtains media streams and realizes user recording. A voice switching device is a network device used for voice electrical signal forwarding. The first communication terminal is a communication terminal that actively initiates a recording request, and the other communication terminals are communication terminals that participate in the recording process except for the first communication terminal. When communicating through a conference call created on the voice switching device, there are generally at least two other communication terminals; when performing point-to-point communication through the voice switching device, there is one other communication terminal. Wherein, the first communication terminal communicates with other communication terminals through the voice switching device.

Step S302: the recording server receives the recording start request sent by the voice switching device and sends a recording start response to the voice switching device.

After the recording server joins the conference site, it receives the recording start request sent by the voice switching device. At this time, the recording server receives the recording start request sent by the voice switching device, and sends a recording start response to the voice switching device.

Step S303: After sending the recording start response to the voice switching device, the recording server receives the first media stream and the second media stream from the voice switching device.

The second media stream is a media stream generated by the voice switching device after receiving the recording start response from the recording server and performing mixing processing on the media stream from the first communication terminal and the media streams from other communication terminals. After sending the recording start response to the voice switching device, the recording server is ready for recording, and at this time, the recording server receives the second media stream from the voice switching device.

The first media stream is a media stream generated by the voice switching device after mixing the media stream from the first communication terminal and the media streams from other communication terminals before the voice switching device receives a recording start response from the recording server. The first media stream is stored in the cache in advance, and after the recording server is ready for recording, it can receive the first media stream stored in the cache and sent by the voice switching device.

Step S304: the recording server combines and records the first media stream and the second media stream.

The recording server merges and records the first media stream and the second media stream. For example, the voice switching device sends the first media stream and the second media stream at the same time, and the recording server combines the first media stream and the second media stream and records them into one recording file; another example, the voice switching device sends the second media stream first Then the first media stream is sent, and the recording server records the first media stream and the second media stream respectively into one recording file, and merges the two recording files into one recording file.

After the recording server of the present invention receives the first media stream and the second media stream, it combines and records the first media stream and the second media stream. In this way, the loss of the recording before the recording server is ready for recording can be prevented, so that a complete recording can be obtained.

The recording method of the present invention will be described below by taking point-to-point application scenarios and teleconference application scenarios as examples.

Referring to FIG. 6 , FIG. 6 is a flow chart of the interaction between network elements in the networking of the point-to-point application scenario of the recording method of the present invention. Take IP-PBX, FIFO cache, and SIP signaling server as examples.

(1) The user of the first communication terminal uses the first communication terminal to call the user of other communication terminal through IP-PBX, and conducts point-to-point communication with the user of the other communication terminal. The user of the first communication terminal presses on the first communication terminal The record button starts recording and sends a recording request to the IP-PBX.

Both the first communication terminal and other communication terminals may be IP phones, and users of the first communication terminal and other communication terminals may be internal users.

If it is a teleconference scenario, this step should be: the user of the first communication terminal presses the recording key on the first communication terminal to start recording during the conference, and sends a recording request to the IP-PBX.

(2) After receiving the recording request, the IP-PBX creates a conference site, adds the first communication terminal and other communication terminals to the conference site, and performs audio mixing processing on the media streams from the first communication terminal and other communication terminals. The generated media stream is used as the first media stream.

If it is a conference call scenario, this step should be: After the IP-PBX receives the recording request, since the site has been created before the conference call starts, there is no need to create a site at this time, and the audio from the first communication terminal and other communication terminals The media stream is subjected to sound mixing processing, and the media stream generated after the sound mixing processing is used as the first media stream.

(2) IP-PBX creates FIFO buffer for this recording. Before the IP-PBX receives the recording start response from the recording server, the IP-PBX sends the first media stream to the FIFO buffer for storage.

(3) IP-PBX sends an Invite message to SIP Server, inviting the recording server to join the venue.

(4) SIP Server selects a suitable recording server in the recording server cluster, and replies the IP address of the recording server to IP-PBX in a 200OK message.

(5) IP-PBX adds the recording server to the venue, and then, IP-PBX sends a SIP INFO message to the SIP Server to notify the recording server to start recording through the SIP Server, and the SIP Server notifies the recording server to start recording, and the SIP Server receives the start of the recording server After the recording response, send the recording server's start recording response to the voice switching device in a 200OK message.

(6) After the IP-PBX receives the 200 OK response from the recording server to start recording, the IP-PBX performs mixing processing on the media streams from the first communication terminal and other communication terminals, and the media stream generated after the mixing processing is used as the second media stream Send it directly to the recording server instead of sending it to the FIFO cache.

(7) The first media stream in the FIFO buffer is sent to the recording server. The serial number of the first media stream is identified, and the recording server receives the out-of-order first media stream, and can record the media packets in the first media stream in time order according to the serial number identification, so as to realize the recording before the recording server is ready for recording.

(8) The recording server merges and records the first media stream and the second media stream.

Referring to Fig. 7, Fig. 7 is the structure schematic diagram of an embodiment of the voice switching equipment of the present invention, and this voice switching equipment comprises: receiving module 101, mixing module 102, saving module 103, adding module 104, first sending module 105, second A sending module 106 and a third sending module 107 .

The receiving module 101 is configured to receive a recording request from the first communication terminal and a recording start response from the recording server, and the first communication terminal communicates with other communication terminals through the voice switching device.

The voice switching device is a network device used for voice and electrical signal forwarding. Its main function is to handle user registration, call, outgoing relay, create a conference site, and command interaction with the recording server.

The first communication terminal is a communication terminal that actively initiates a recording request, and the other communication terminals are communication terminals that participate in the recording process except for the first communication terminal. When communicating through a conference call created on the voice switching device, there are generally at least two other communication terminals; when performing point-to-point communication through the voice switching device, there is one other communication terminal.

When the first communication terminal sends a recording request to the voice switching device, the voice switching device receives the recording request from the first communication terminal, wherein the first communication terminal communicates with other communication terminals through the voice switching device.

In addition, after the language exchange device sends a recording request to the recording server, it may receive a recording start response from the recording server, and at this time, the recording server is ready for recording.

The sound mixing module 102 is configured to mix the currently received media stream from the first communication terminal and media streams from other communication terminals when receiving a recording request from the first communication terminal.

The saving module 103 is configured to save the media stream generated by the mixing module 102 as the first media stream in the cache after the receiving module 101 receives the recording request and before receiving the recording start response.

The first media stream is a media stream generated by the voice switching device after mixing the media stream from the first communication terminal and the media streams from other communication terminals before receiving the recording start response from the recording server.

Before the voice switching device receives the start recording response from the recording server, the recording server is not ready for recording. But the first communication terminal and other communication terminals have already started a conversation, and the voice switching device saves the first media stream in the cache, which can prevent the loss of the media stream before the recording server is ready for recording, wherein the cache is created in advance .

The joining module 104 is used for adding the recording server into the conference site created by the voice exchange device and including the first communication terminal and other communication terminals.

The recording server is a device that obtains media streams and realizes user recording. After receiving the recording request from the first communication terminal, the voice switching device needs to add a recording server to the conference site to realize the recording. The conference site is created by the voice switching device, and includes the first communication terminal and other communication terminals. If it is a point-to-point conversation, after the voice switching device receives the recording request from the first communication terminal, the voice switching device creates a site, and adds the first communication terminal and other communication terminals to the site; if it is a conference call, the site is before the conference call starts The already created site is the conference site. After the voice switching device receives the recording request from the first communication terminal, there is no need to create another site.

The first sending module 105 is configured to send a recording start request to the recording server.

After the recording server joins the conference site, the voice switching device sends a recording start request to the recording server, so that the recording server is ready for recording.

The second sending module 106 is configured to send, as a second media stream, the media stream generated by the current mixing module 102 to the recording server after the receiving module 101 receives the recording start response.

The second media stream is a media stream generated by the voice switching device after receiving the recording start response from the recording server and performing mixing processing on the media stream from the first communication terminal and the media streams from other communication terminals.

After the voice switching device receives the recording start response from the recording server, the recording server is ready for recording. The voice switching device mixes the currently received media stream from the first communication terminal and media streams from other communication terminals, and at this time, sends the media stream generated by the mixing as the second media stream to the recording server.

The third sending module 107 is configured to send the first media stream stored in the cache to the recording server after the receiving module 101 receives the recording start response, so that the recording server can perform combined recording of the first media stream and the second media stream.

During the time when the recording server is not ready for recording, the first media stream is stored in the cache. In order to facilitate the recording server to obtain a complete media stream, the voice switching device sends the first media stream stored in the cache to the recording server, so that Combine and record the first media stream and the second media stream at the recording server.

It should be noted that, in practical applications, the modules or units of this embodiment may be increased, decreased or combined, and details will not be repeated here.

Referring to Fig. 8, the voice switching device further includes a creation module 108, which is used to create a buffer when a recording request is received.

Cache refers to the temporary file exchange area, which has an extremely fast access rate. It is a buffer between internal storage and external interfaces.

A voice switching device creates a cache when it receives a recording request. For example: it may be created after receiving a recording request from the first communication terminal. Of course, it may also be created before receiving the recording request from the first communication terminal, which is not limited here.

The saving module 103 is configured to stop saving the media stream generated by the audio mixing in the cache when receiving a recording start response from the recording server.

After receiving the start recording response from the recording server, the recording server is ready for recording. Therefore, the voice switching device can stop saving the media stream generated after the audio mixing process in the cache, and directly store the media stream generated after the audio mixing process The stream is sent to the recording server as a second media stream. In this way, the storage space of the cache can be avoided from being wasted.

Wherein, the media packets in the first media stream are marked with sequence numbers, so that the recording server can record the media packets in the first media stream in chronological order according to the sequence numbers.

It should be noted that the voice switching device in this embodiment can execute the steps in FIG. 3 and FIG. 4 .

In the present invention, before receiving the recording start response from the recording server, the voice switching device stores the first media stream generated after the audio mixing process in the cache; The second media stream generated later is sent to the recording server; the voice switching device sends the first media stream stored in the cache to the recording server, so that the recording server can combine and record the first media stream and the second media stream. In this way, the loss of the recording before the recording server is ready for recording can be prevented, so that a complete recording can be obtained.

Referring to Fig. 9, Fig. 9 is a schematic structural diagram of an embodiment of the recording server of the present invention, and the recording server includes: a joining module 201, a first receiving module 202, a sending module 203, a second receiving module 204, a third receiving module 205 and a combination Recording module 206.

It should be noted that the recording server in this embodiment can execute the steps in FIG. 5 .

The joining module 201 is used to join the conference site created by the voice switching device and includes the first communication terminal and other communication terminals, and the first communication terminal and other communication terminals communicate through the voice switching device.

The recording server is a device that obtains media streams and realizes user recording. A voice switching device is a network device used for voice electrical signal forwarding. The first communication terminal is a communication terminal that actively initiates a recording request, and the other communication terminals are communication terminals that participate in the recording process except for the first communication terminal. When communicating through a conference call created on the voice switching device, there are generally at least two other communication terminals; when performing point-to-point communication through the voice switching device, there is one other communication terminal. Wherein, the first communication terminal communicates with other communication terminals through the voice switching device.

The recording server can prepare for recording only when it joins the conference site created by the voice exchange device and includes the first communication terminal and other communication terminals.

The first receiving module 202 is configured to receive the recording start request sent by the voice switching device.

The sending module 203 is configured to send a recording start response to the voice switching device after the first receiving module 202 receives the recording start request sent by the voice switching device.

After the recording server joins the conference site, it receives the recording start request sent by the voice switching device. At this time, the recording server receives the recording start request sent by the voice switching device, and sends a recording start response to the voice switching device.

The second receiving module 204 is configured to receive the second media stream from the voice switching device after the sending module 203 sends the recording start response to the voice switching device.

The second media stream is a media stream generated by the voice switching device after receiving the recording start response from the recording server and performing mixing processing on the media stream from the first communication terminal and the media streams from other communication terminals. After sending the recording start response to the voice switching device, the recording server is ready for recording, and at this time, the recording server receives the second media stream from the voice switching device.

The third receiving module 205 is configured to receive the buffered first media stream from the voice switching device after the sending module 203 sends the recording start response to the voice switching device.

The first media stream is a media stream generated by the voice switching device after mixing the media stream from the first communication terminal and the media streams from other communication terminals before the voice switching device receives a recording start response from the recording server. The first media stream is stored in the cache in advance, and after the recording server is ready for recording, it can receive the first media stream stored in the cache and sent by the voice switching device.

The combined recording module 206 is configured to combine and record the second media stream received by the second receiving module 204 and the first media stream received by the third receiving module 205 .

The recording server merges and records the first media stream and the second media stream. For example, the voice switching device sends the first media stream and the second media stream at the same time, and the recording server combines the first media stream and the second media stream and records them into one recording file; another example, the voice switching device sends the second media stream first Then the first media stream is sent, and the recording server records the first media stream and the second media stream respectively into one recording file, and merges the two recording files into one recording file.

After the recording server of the present invention receives the first media stream and the second media stream, it combines and records the first media stream and the second media stream. In this way, the loss of the recording before the recording server is ready for recording can be prevented, so that a complete recording can be obtained.

Referring to FIG. 10 , FIG. 10 is a schematic structural diagram of an embodiment of the recording system of the present invention, and the system includes: a voice exchange device 31 and a recording server 32 .

The voice switching device is used to receive a recording request from the first communication terminal, and the first communication terminal communicates with other communication terminals through the voice switching device; when receiving the recording request, the currently received media stream from the first communication terminal and Mix the media streams from other communication terminals, and save the media stream generated by the mixing as the first media stream in the cache; add the recording server to the conference site created by the voice switching device including the first communication terminal and other communication terminals ; Send a recording start request to the recording server; after receiving the recording start response from the recording server, mix the currently received media stream from the first communication terminal and media streams from other communication terminals, and mix the generated media The stream is sent to the recording server as the second media stream, and the first media stream stored in the cache before receiving the start recording response is sent to the recording server, so that the recording server can perform combined recording of the first media stream and the second media stream .

The recording server is used to join the conference site created by the voice switching device and includes the first communication terminal and other communication terminals, and the first communication terminal and other communication terminals communicate through the voice switching device; receive the start recording request sent by the voice switching device and send a voice call The switching device sends a start recording response; after sending the start recording response to the voice switching device, receiving the first media stream and the second media stream from the voice switching device, the first media stream is the voice switching device before receiving the start recording response The media stream generated after the media stream from the first communication terminal and other communication terminals is mixed, and the second media stream is the media stream from the first communication terminal and other communication terminals received by the voice switching device after receiving the start recording response A media stream generated after performing sound mixing processing; performing combined recording on the first media stream and the second media stream.

In the present invention, before receiving the start-recording response from the recording server, the voice exchange device saves the mixed-processed first media stream in the cache; The second media stream is sent to the recording server; the voice switching device sends the first media stream stored in the cache to the recording server, and the recording server receives the first media stream and the second media stream, streams for combined recording. In this way, the loss of the recording before the recording server is ready for recording can be prevented, so that a complete recording can be obtained.

Referring to FIG. 11 , FIG. 11 is a schematic diagram of the physical structure of another embodiment of the voice switching device of the present invention. The voice switching device 40 includes a processor 41 , a memory 42 coupled to the processor 41 , a receiver 43 and a transmitter 44 .

The receiver 43 is used to receive a recording request from the first communication terminal, and the first communication terminal communicates with other communication terminals through the receiver 43 and the transmitter 44 of the voice switching device 40 .

When the receiver 43 receives the recording request, the processor 41 mixes the media stream from the first communication terminal currently received by the receiver 43 and the media stream from the other communication terminals, and controls the transmitter 44. Store the media stream generated by the audio mixing as the first media stream in the cache of the memory 42.

The processor 41 adds the recording server to the conference site created by the voice exchange device and includes the first communication terminal and the other communication terminals.

The sender 44 sends a recording start request to the recording server.

After the receiver 43 receives the recording start response from the recording server, the processor 41 mixes the currently received media stream from the first communication terminal and media streams from the other communication terminals, and controls the sending The device 44 sends the media stream generated by the audio mixing as the second media stream to the recording server.

The processor 41 obtains the first media stream stored in the cache of the memory 42, and controls the transmitter 44 to send the first media stream stored in the cache before the receiver 43 receives the start recording response to the recording server , so that the recording server performs combined recording of the first media stream and the second media stream.

In the present invention, before receiving the recording start response from the recording server, the voice switching device stores the first media stream generated after the audio mixing process in the cache; The second media stream generated later is sent to the recording server; the voice switching device sends the first media stream stored in the cache to the recording server, so that the recording server can combine and record the first media stream and the second media stream. In this way, the loss of the recording before the recording server is ready for recording can be prevented, so that a complete recording can be obtained.

Referring to FIG. 12 , FIG. 12 is a schematic structural diagram of another embodiment of the recording server of the present invention. The recording server 50 includes: a processor 51 , a memory 52 coupled to the processor 51 , a receiver 53 and a transmitter 54 .

The processor 51 is configured to join a conference site created by the voice switching device that includes the first communication terminal and other communication terminals, where the first communication terminal and the other communication terminals communicate through the voice switching device;

The receiver 53 receives the recording start request sent by the voice switching device, and the transmitter 54 sends a recording start response to the voice switching device;

After sending the start recording response to the voice switching device, the receiver 53 receives the first media stream and the second media stream from the voice switching device, the first media stream is the voice switching device receiving the The media stream generated after the media stream from the first communication terminal and the other communication terminal is mixed before the start of the recording response, and the second media stream is the voice switching device receiving the start After the recording response, the media stream generated after performing mixing processing on the media streams from the first communication terminal and the other communication terminals;

The processor 51 combines and records the first media stream and the second media stream.

After the recording server of the present invention receives the first media stream and the second media stream, it combines and records the first media stream and the second media stream. In this way, the loss of the recording before the recording server is ready for recording can be prevented, so that a complete recording can be obtained.

The above is only the embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (11)

1. a way of recording, is characterized in that, described method comprises:

Voice switching device receives the recording request from the first communication terminal, and described first communication terminal is communicated by described voice switching device with other communication terminal;

Described voice switching device is when receiving described recording request, audio mixing is carried out to the Media Stream from described first communication terminal of current reception and the Media Stream from other communication terminal described, and the Media Stream generated by audio mixing is preserved in the buffer as the first Media Stream;

Described voice switching device recording server is added described voice switching device create comprise in the meeting-place of described first communication terminal and other communication terminal described;

Described voice switching device sends to described recording server and starts recording request;

Described voice switching device is after the startup recording response receiving described recording server, audio mixing is carried out to the Media Stream from described first communication terminal of current reception and the Media Stream from other communication terminal described, described recording server is given as the second media stream using the Media Stream of audio mixing generation, and by receive described start recording response before be kept at the first media stream in described buffer memory to described recording server, so that described recording server carries out mergings recording to described first Media Stream and described second Media Stream.

2. method according to claim 1, is characterized in that, described method also comprises: described voice switching device creates described buffer memory when receiving described recording request.

3. method according to claim 1 and 2, is characterized in that, described method also comprises: described voice switching device stops by the Media Stream preservation of audio mixing generation in the buffer when receiving described startup recording response.

4. the method according to any one of claims 1 to 3, is characterized in that, the media band in described first Media Stream has sequence number to identify, so that described recording server identifies the media bag recorded in chronological order in described first Media Stream according to described sequence number.

5. a way of recording, is characterized in that, described method comprises:

Recording server adds comprising in the meeting-place of the first communication terminal and other communication terminal of voice switching device establishment, and described first communication terminal is communicated by described voice switching device with other communication terminal described;

Described recording server receives the startup recording request of described voice switching device transmission and starts to described voice switching device transmission response of recording;

After send startup recording response to described voice switching device, recording server receives from the first Media Stream of described voice switching device and the second Media Stream, described first Media Stream is the Media Stream generated after described voice switching device carried out stereo process to the Media Stream from described first communication terminal and other communication terminal described before receiving described startup recording response, described second Media Stream is the Media Stream generated after described voice switching device carries out stereo process to the Media Stream from described first communication terminal and other communication terminal described after receiving described startup recording response,

Described recording server carries out merging to described first Media Stream and described second Media Stream and records.

6. a voice switching device, is characterized in that, described voice switching device comprises: receiver module, mix module, preservation module, add module, the first sending module, the second sending module and the 3rd sending module;

Described receiver module is for receiving the recording request from the first communication terminal and the recording of the startup from recording server response, and described first communication terminal is communicated by described voice switching device with other communication terminal;

Described mix module is used for, when receiving described recording request, the Media Stream from described first communication terminal of current reception and the Media Stream from other communication terminal described being carried out audio mixing;

Described preservation module is used for after described receiver module receives described recording request, receive described start recording response before Media Stream that described mix module audio mixing is generated preserve in the buffer as the first Media Stream;

Described add module for recording server is added described voice switching device create comprise in the meeting-place of described first communication terminal and other communication terminal described;

Described first sending module is used for sending to described recording server starting recording request;

Described second sending module be used for described receiver module receive described start recording response after Media Stream that current for described mix module audio mixing is generated as the second media stream to described recording server;

Described 3rd sending module is used for being sent to described recording server by the first Media Stream be kept in described buffer memory after described receiver module receives described startup recording response, records so that described recording server carries out merging to described first Media Stream and described second Media Stream.

7. voice switching device according to claim 6, is characterized in that, described voice switching device also comprises creation module, and described creation module is used for creating described buffer memory when receiving described recording request.

8. the voice switching device according to claim 6 or 7, is characterized in that, described preservation module, also for stopping by the Media Stream preservation of audio mixing generation in the buffer when receiving described startup recording response.

9. the voice switching device according to any one of claim 6 to 8, it is characterized in that, media band in described first Media Stream has sequence number to identify, so that described recording server identifies the media bag recorded in chronological order in described first Media Stream according to described sequence number.

10. a recording server, is characterized in that, described recording server comprises: add module, the first receiver module, sending module, the second receiver module, the 3rd receiver module and merge and record module;

The described module that adds is for comprising in the meeting-place of the first communication terminal and other communication terminal of adding that voice switching device creates, and described first communication terminal is communicated by described voice switching device with other communication terminal described;

The startup recording request that described first receiver module sends for receiving described voice switching device;

Described sending module is used for, after described first receiver module receives the startup recording request of described voice switching device transmission, sending start response of recording to described voice switching device;

Described second receiver module is used for after described sending module sends startup recording response to described voice switching device, receive the second Media Stream from described voice switching device, described second Media Stream is the Media Stream generated after described voice switching device carries out stereo process to the Media Stream from described first communication terminal and other communication terminal described after receiving described startup recording response;

Described 3rd receiver module is used for after described sending module sends startup recording response to described voice switching device, receive the first Media Stream from the buffer memory of described voice switching device, described first Media Stream is the Media Stream generated after described voice switching device carried out stereo process to the Media Stream from described first communication terminal and other communication terminal described before receiving described startup recording response;

The described recording module that merges is recorded for carrying out merging to the second Media Stream of described second receiver module reception and the first Media Stream of described 3rd receiver module reception.

11. 1 kinds of recording systems, is characterized in that, described system comprises: voice switching device and recording server;

Described voice switching device is for receiving the recording request from the first communication terminal, and described first communication terminal is communicated by described voice switching device with other communication terminal; When receiving described recording request, audio mixing is carried out to the Media Stream from described first communication terminal of current reception and the Media Stream from other communication terminal described, and the Media Stream generated by audio mixing is preserved in the buffer as the first Media Stream; Recording server is added described voice switching device create comprise in the meeting-place of described first communication terminal and other communication terminal described; Send to described recording server and start recording request; After the startup recording response receiving described recording server, audio mixing is carried out to the Media Stream from described first communication terminal of current reception and the Media Stream from other communication terminal described, described recording server is given as the second media stream using the Media Stream of audio mixing generation, and by receive described start recording response before be kept at the first media stream in described buffer memory to described recording server, so that described recording server carries out mergings recording to described first Media Stream and described second Media Stream;

Described recording server is for comprising in the meeting-place of the first communication terminal and other communication terminal of adding that voice switching device creates, and described first communication terminal is communicated by described voice switching device with other communication terminal described, receive the startup recording request of described voice switching device transmission and start to described voice switching device transmission response of recording, after send startup recording response to described voice switching device, receive the first Media Stream from described voice switching device and the second Media Stream, described first Media Stream is the Media Stream generated after described voice switching device carried out stereo process to the Media Stream from described first communication terminal and other communication terminal described before receiving described startup recording response, described second Media Stream is the Media Stream generated after described voice switching device carries out stereo process to the Media Stream from described first communication terminal and other communication terminal described after receiving described startup recording response, carry out merging to described first Media Stream and described second Media Stream to record.