CN104426702B - A kind of control method of voice service, device and system - Google Patents

Abstract

The invention discloses a voice service control method, device and system, which relate to the technical field of communication and are used for simplifying the functions of remote nodes and reducing the load of remote nodes. The present invention provides an access controller, comprising: an interface circuit unit, a voice control conversion unit, and an AG control plane unit; wherein the interface circuit unit is used to receive a first message sent by a remote node; the The voice control conversion unit is configured to obtain a first voice control digital signal from the first message received by the interface circuit unit; the AG control plane unit is configured to perform voice control according to the first voice control digital signal.

Description

A control method, device and system for voice service

technical field

The present invention relates to the technical field of communications, and in particular, to a method, device and system for controlling voice services.

Background technique

In the voice service network architecture of the traditional access network, as shown in Figure 1, the architecture includes a communication terminal, a remote node, an Optical Line Termination (OLT, Optical Line Termination) or an Internet Protocol (IP, Internet Protocol) edge node. and IP Multimedia Subsystem Core (IMS Core, IP Multimedia Subsystem Core). The remote node may be an optical network terminal (ONT, Optical Network Terminal), a customer premises equipment (CPE, Custompremises Equipment), an optical network unit (ONU, Optical Network Unit), a digital subscriber line access multiplexer (DSLAM, Digital Subscriber Line Access Multiplexer), Multi-dwelling Unit (MDU, Multi-dwelling Unit), etc.; OLT or IP edge node network side is connected to IMS Core.

In order to support voice services, a voice access gateway is introduced at the remote node. The voice access gateway is used to complete functions such as voice call control, service configuration, and operation and maintenance management for users. The voice access gateway includes an access gateway (AG). , Access Gateway) control plane unit, AG management plane unit and AG data plane unit.

However, with the development of voice services, there are more and more communication terminals, which leads to an increase in the complexity of functions such as voice service configuration and operation and maintenance management performed by remote nodes, which in turn increases the load of remote nodes.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method, device and system for controlling voice services, which simplifies the functions of a remote node, thereby reducing the load of the remote node.

To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides an access controller (AC, Access Controller), including: an interface circuit unit, a voice control conversion unit, and an AG control plane unit; wherein,

the interface circuit unit, configured to receive the first message sent by the remote node;

the voice control conversion unit, configured to obtain the first voice control digital signal from the first message received by the interface circuit unit;

The AG control plane unit is configured to perform voice control according to the first voice control digital signal.

In a first possible implementation manner, according to the first aspect, the AG control plane unit is configured to generate a second voice control digital signal according to the first voice control digital signal;

The voice control conversion unit is further configured to encapsulate the second voice control digital signal into a second message;

The interface circuit unit is further configured to send the second message obtained by the voice control conversion unit to the remote node.

In a second possible implementation manner, according to the first aspect, the AG control plane unit is configured to generate a third message according to the first voice control digital signal;

The interface circuit unit is further configured to send the third message generated by the AG control plane unit to the core network device.

In a third possible implementation manner, according to the first aspect, the interface circuit unit is further configured to receive the first message from the core network device;

The AG control plane unit is further configured to generate a first voice control digital signal according to the first message received by the interface circuit unit;

The voice control conversion unit is further configured to encapsulate the first voice control digital signal into a second message;

The interface circuit unit is further configured to send the second message to the remote node.

In a fourth possible implementation manner, according to the first aspect, the access controller further includes: an AG management plane unit, which is used for the management plane function of the AG.

In a fifth possible implementation manner, in combination with the first aspect or any one of the first four possible implementation manners, the access controller is located at the optical line terminal OLT or the network protocol IP edge node.

In a second aspect, an embodiment of the present invention provides a remote node, including: an interface circuit unit and a voice control conversion unit;

The interface circuit unit is used to detect the first voice-controlled analog signal from the communication terminal, and convert the first voice-controlled analog signal into a first voice-controlled digital signal;

the voice control conversion unit, configured to encapsulate the first voice control digital signal into a first message;

The interface circuit unit is further configured to send the first message to the access controller, so that the access controller uses the first message to perform voice control.

In a first possible implementation manner, according to the second aspect, the interface circuit unit is further configured to receive a second message from the access controller;

The voice control conversion unit is further configured to obtain a second voice control digital signal from the second message;

The interface circuit unit is further configured to convert the second voice control digital signal into a second voice control analog signal, and send the second voice control analog signal to the communication terminal.

In a third aspect, an embodiment of the present invention provides a voice service control system, including: a communication terminal, a remote node connected to at least one of the communication terminals, and an access controller connected to at least one of the remote nodes , and a core network device connected to the access controller;

Wherein, the communication terminal is used to generate a first voice control analog signal or receive a voice control analog signal sent by the remote node;

The remote node is used to detect the first voice-controlled analog signal from the communication terminal; convert the first voice-controlled analog signal into a first voice-controlled digital signal; and encapsulate the first voice-controlled digital signal into a first message;

The access controller is configured to receive the first message from the remote node; obtain a first voice control digital signal from the received first message; perform voice control according to the first voice control digital signal;

The core network device is configured to perform message interaction with the access controller in a voice control process.

In a fourth aspect, an embodiment of the present invention provides a method for controlling a voice service, including: an access controller is located at an OLT or an IP edge node;

the access controller receives the first message from the remote node;

Obtain a first voice control digital signal from the received first message;

Voice control is performed according to the first voice control digital signal.

In a first possible implementation manner, according to the fourth aspect, the performing voice control according to the first voice control digital signal includes: generating a second voice control digital signal according to the first voice control digital signal;

The method further includes: encapsulating the second voice control digital signal into a second message; and sending the second message to the remote node.

In the second possible implementation manner, according to the first possible implementation manner, if the first voice control digital signal is an off-hook digital signal for the calling user, the second voice control information is a signal to the calling user digital signal for dial tone.

In a third possible implementation manner, according to the fourth aspect, the method further includes:

receiving the first message from the core network device;

generating a first voice control digital signal according to the first message;

encapsulating the first voice control digital signal into a second message;

Sending the second message to the remote node, so that the remote node converts the first voice control digital signal in the second message into a first voice control analog signal, and sends the first voice to the communication terminal Control the analog signal.

The embodiments of the present invention provide a voice service control method, device and system. By moving the control plane unit of the voice access gateway of the remote node to the access controller, the functions of the remote node are simplified, thereby reducing the It reduces the load of the remote node; and only needs to maintain the access controller after moving up, which can reduce the maintenance cost; further, it avoids the complicated data configuration and control of the remote node, which reduces the operation and maintenance. Management complexity.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic diagram of a network system architecture of a traditional voice service provided by an embodiment of the present invention;

2 is a schematic diagram of a network system architecture of a voice service provided by an embodiment of the present invention;

3 is a flowchart of a method for controlling a voice service provided by an embodiment of the present invention;

4 is a flowchart of another method for controlling a voice service provided by an embodiment of the present invention;

5 is a flowchart of another method for controlling a voice service provided by an embodiment of the present invention;

6 is a flowchart of another voice service control method provided by an embodiment of the present invention;

7 is a flowchart of another method for controlling a voice service provided by an embodiment of the present invention;

8 is a schematic diagram of a control system architecture of another voice service provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an access controller according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another access controller provided by an embodiment of the present invention;

11 is a schematic structural diagram of a remote node according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another access controller according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of another access controller according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of another remote node according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The present invention provides a voice service control system. As shown in FIG. 2 , the control system 20 includes: a communication terminal 201 , a remote node 202 , an access controller 203 and a core network device 204 .

Wherein, the communication terminal 201 may be a telephone, and is used for generating a voice-controlled analog signal or receiving a voice-controlled analog signal sent by a remote node.

The remote node 202 can be an ONT, a CPE, an ONU, a DSLAM, or an MDU, and is used for exchanging voice control analog signals with the communication terminal 201, and exchanging messages in the voice control process with the access controller 203; The communication terminal 201 and the remote node 202 can be connected by a copper cable (for example, a telephone twisted pair cable, a cable TV cable, a power line or an Ethernet cable), or a wireless interface, which is of course not limited to this. .

The access controller 203 is used to exchange messages in the voice control process with the remote node 202 and the core network device 204; an optical fiber may be used between the access controller 203 and the core network device 204 Connecting, of course, is not limited to this.

Wherein, the information is transmitted between the remote node 202 and the access controller 203 in the form of a message, and the message is carried on the access control protocol. The access control protocol can be an extended access control protocol that carries various digital signals involved in the voice call process, such as: ONT Management and Control Interface (OMCI, ONT Management and Control Interface), Ethernet Operation Management and Maintenance (ETH) OAM, EtherNetOperation Administration and Maintenance), Access Point Control Protocol (ANCP, Access NodeControl Protocol) or Openflow, etc.

The core network device 204 may be a server, configured to exchange messages in the voice control process with the access controller 203 .

Based on the system provided above, the present invention provides a method for controlling a voice service, as shown in FIG. 3 , including:

S301. The communication terminal generates a first voice control analog signal.

For example, assuming that the communication terminal is a telephone, when the telephone is in a calling state, the telephone goes off-hook to generate an off-hook analog signal.

S302. The remote node detects the first voice control analog signal from the communication terminal.

For example, it is assumed that the remote node is a CPE. This step may be specifically as follows: the CPE detects an off-hook analog signal of the telephone.

S303. The remote node converts the first voice control analog signal into a first voice control digital signal.

S304. The remote node encapsulates the first voice control digital signal into a first message.

Since the digital signal generated by the remote node is carried in the access control protocol and uploaded to the access controller in the form of a message, the first voice control digital signal generated by the remote node needs to be encapsulated into a first message to The first message is sent to the access controller.

S305. The remote node sends the first message to the access controller; correspondingly, the access controller receives the first message from the remote node.

S306. The access controller acquires the first voice control digital signal from the received first message.

S307. The access controller performs voice control according to the first voice control digital signal.

Optionally, this step may specifically include: generating a second voice-controlled digital signal according to the first voice-controlled digital signal. At this time, the method further includes: encapsulating the second voice control digital signal into a second message; and sending the second message to the remote node.

Specifically, if the first voice-controlled digital signal is a digital signal for the calling user to pick up the phone, the second voice-controlled digital signal is a digital signal for playing a dial tone to the calling user.

Further, the remote node receives the second message from the access controller; obtains a second voice control digital signal from the second message; converts the second voice control signal into a second voice control analog signal; The communication terminal sends the second voice control analog signal.

Exemplarily, if the first voice control digital signal is a digital signal for the calling user to pick up the phone, the access controller generates a digital signal for the calling user to play a dial tone according to the digital signal for the calling user to pick up the phone, and sends the digital signal to the caller. The signal is encapsulated in the form of a message, which is carried in the access control protocol and sent to the remote node; the remote node receives the message that the calling user plays the dial tone, and obtains the calling user's dial tone from the message of the calling user playing the dial tone. The digital signal of dial tone converts the digital signal of dial tone played by the calling user into an analog signal of dial tone played by the calling user, and sends the analog signal of dial tone played by the calling user to the communication terminal at the same time.

Or optionally, this step may specifically include: generating a third message according to the first voice control digital signal. At this time, the method further includes: sending the third message to the core network device.

Specifically, the generating the third message according to the first voice control digital signal includes:

If the first voice control digital signal is the digital signal of the Nth dialed number from the start of dialing, then perform digit map matching between the digital signal of the first dialed number from the start of dialing to the digital signal of the Nth dialed number, In the case of a successful match, a message for paging the called party is generated; or,

If the first voice control digital signal is an off-hook digital signal of the called party, a message indicating that the called party has gone off-hook is generated; or,

If the first voice control digital signal is a user hanging up digital signal, a message for indicating call termination is generated.

Since the access controller will receive different digital signals from the remote node, the access controller will generate corresponding messages according to these different digital signals.

For example, if the communication terminal is the calling user, when the first voice control digital signal is the digital signal of the Nth dialed number from the start of dialing, then the digital signal of the first dialed number from the start of dialing is sent to the Nth digital signal. Digit-map matching is performed on the digital signals of each dialed number, and in the case of successful matching, an Inivite message is generated; the Inivite message is sent to the core network device.

If the communication terminal is the called user, when the first voice control signal obtained by the access controller is the called user's off-hook digital signal, a 200 message is generated; the 200 message is sent to the core network device to inform the calling party The called user has gone off-hook.

Regardless of whether the communication terminal is the calling user or the called user, when one party hangs up and the first voice control signal obtained by the access controller is a digital signal for the user to hang up, a bye request message is generated; the bye request message is sent to core network equipment.

The embodiment of the present invention provides a voice service control method. By moving the control plane unit of the voice access gateway of the remote node to the access controller, the functions of the remote node are simplified, thereby reducing the size of the remote node. It can reduce the load of the node; and only need to maintain the access controller after moving up, which can reduce the maintenance cost; further, it avoids the complicated data configuration and control of the remote node, and reduces the complexity of operation and maintenance management. .

Further, the present invention also provides a method for controlling a voice service, as shown in FIG. 4 , including:

S401. The core network device generates a first message and sends it to the access controller; correspondingly, the access controller receives the first message from the core network device.

S402. Generate a first voice control digital signal according to the first message.

Wherein, if the first message is a message used to indicate that the called user is already ringing, the first voice control digital signal is a digital signal for playing back the ring tone to the calling user; or,

If the first message is a message used to indicate that the called user has gone off-hook, the first voice control digital signal is a digital signal to park the ringback tone to the calling user; or,

If the first message is a message for paging a called party, the first voice control digital signal is a called user ringing digital signal.

For example, assuming that the communication terminal is a telephone, when the telephone is in the calling state, that is, when the telephone is the calling user, if the IMS Core generates a 180 message and sends it to the access controller, at this time, the first message is 180. message; the access controller knows that the called user has been ringing according to the received 180 message, and then generates a digital signal for the calling user to put the ring back tone, that is, the first voice control digital signal to put the ring back tone for the calling user If the IMS Core generates a 200 message and sends it to the access controller, at this time, the first message is a 200 message; according to the received 200 message, the access controller knows that the called user has been off-hook, and generates a primary message. The digital signal for calling the user to park the ringback tone, that is, the first voice control digital signal is the digital signal for the calling user to park the ringback tone.

For example, assuming that the communication terminal is a telephone, when the telephone is in the called state, that is, when the telephone is the called user, the IMS Core generates an Invite message and sends it to the access controller. At this time, the first message is an Invite message. ; The access controller finds the called user according to the information carried in the received Invite message; after finding the called user, it rings to the called user, and generates the called user ringing control digital signal, that is, the first voice control digital signal The signal is a digital signal for called party ringing control.

S403. Encapsulate the first voice control digital signal into a second message.

Since the information is transmitted between the access controller and the remote node in the form of a message and carried in the access control protocol, it is necessary to encapsulate the first voice control digital signal generated by the access controller into the form of a message , and download it to the remote node.

Exemplarily, after step S402, according to the different first voice control digital signals generated, the digital signal of the ring back tone of the calling user may be encapsulated into a message of the ring back tone of the calling user; The digital signal of the ringback tone is encapsulated into a message that the calling user stops the ringback tone; the digital signal of the called user's ringing control is encapsulated into a message of the called user's ringing.

S404. Send the second message to the remote node, so that the remote node converts the first voice control digital signal in the second message into a first voice control analog signal, and sends the first voice control signal to the communication terminal A voice-controlled analog signal.

The embodiment of the present invention provides a voice service control method. By moving the control plane unit of the voice access gateway of the remote node to the access controller, the functions of the remote node are simplified, thereby reducing the size of the remote node. It can reduce the load of the node; and only need to maintain the access controller after moving up, which can reduce the maintenance cost; further, it avoids the complicated data configuration and control of the remote node, and reduces the complexity of operation and maintenance management. .

Below, the present invention also provides specific examples to describe the above voice control method in detail. In each specific embodiment, the system architecture of the voice service as shown in FIG. 2 is adopted.

Embodiment 1.

In the following, according to the system architecture of the above voice service, assuming that the communication terminal is a telephone, when the telephone (called the calling user at this time) initiates the calling service and makes a successful call, a specific implementation scheme is provided, As shown in Figure 5, it specifically includes the following steps:

Step 501: the calling user goes off-hook to generate an off-hook analog signal;

Step 502: The calling user sends the generated off-hook analog signal to the remote node; correspondingly, the remote node detects the calling off-hook analog signal.

Step 503: The remote node converts the detected calling off-hook analog signal into a calling off-hook digital signal, and encapsulates the digital signal into the form of a message.

Step 504: The remote node uploads the caller off-hook message to an access controller (AC, Access Controller); correspondingly, the AC receives the caller's off-hook message sent by the remote node.

Step 505: The AC generates a control message for the calling user to play a dial tone according to the received message that the calling user goes off-hook.

Specifically, the AC extracts the digital signal of the calling user's off-hook from the received message of the calling user's off-hook; The user plays the dial tone to control the digital signal to be encapsulated in the form of a message.

Step 506: The AC downloads the message that the calling user plays the dial tone to the remote node; correspondingly, the remote node receives the message that the calling user plays the dial tone sent by the AC.

Step 507: The remote node generates an analog signal for the calling user to play the dial tone according to the control message sent by the AC for the calling user to play the dial tone.

In this embodiment of the present invention, the remote node receives a control message sent by the AC for the calling user to play dial tone; the remote node extracts the control digits for the calling user to play dial tone from the control message for the calling user to play dial tone signal and convert the digital signal to a dial tone analog signal.

Step 508: The remote node transmits the generated analog signal of the calling user playing a dial tone to the calling user; correspondingly, the calling user receives the analog signal sent by the remote node that the calling user plays a dial tone.

Step 509: The calling user generates a first dialing number analog signal according to the received analog signal of the dial tone played by the calling user.

Step 510: The calling user sends the generated analog signal for sending the first dialed number to the remote node; correspondingly, the remote node detects the analog signal for the first dialed number of the calling user.

Step 511: The remote node generates a digital signal of the first dialed number of the calling user according to the detected analog signal of the first dialed number of the calling user, and encapsulates the digital signal into the form of a message.

Step 512: The remote node uploads the message of the first dialing number of the calling user to the AC; correspondingly, the AC receives the message of the first dialing number of the calling user sent by the remote node.

Step 513: The AC performs digit map matching according to the first dialed number message received by the calling user.

Specifically, the AC receives the calling user's first dialing number message, extracts the calling user's first dialing number digital signal from the received calling user's first dialing number message, and transmits it to the AG Control plane unit; AG control plane unit performs digit map matching according to the digital signal of the first dialed number of the calling user.

Step 514: The remote node generates an analog signal that the calling user stops sending dial tone.

Step 515: The remote node downloads the generated analog signal of calling user stop sending dial tone to the calling user; correspondingly, the calling user receives the calling user stop sending dial tone analog signal sent by the remote node.

Step 516, the calling user generates a second dialed number analog signal;

Step 517: The calling user sends the generated second dialing number analog signal to the remote node; correspondingly, the remote node detects the calling user's second dialing number analog signal.

Step 518: The remote node generates digital information of the calling user's second dialing number according to the analog signal of the second dialing number detected by the calling user, and encapsulates the digital signal into a message.

Step 519: The remote node uploads the message of the second dialed number of the calling user to the AC; correspondingly, the AC receives the message of the second dialed number of the calling user sent by the remote node.

Until all the analog signals of N dialed numbers are sent.

Wherein, the N dialing numbers are the digits of the calling user's telephone number.

In step 520, the AC pair receives the N dialed number messages, and through digit map matching, finds that a certain digit map has been matched, then constructs an Invite message;

In a specific embodiment of the present invention, the AC extracts N dialed number digital signals from the received N dialed number messages, and performs digit map matching; if it finds that a digit map has been matched, it constructs an Invite message.

Step 521, the AC sends an Invite message to the IMS Core; correspondingly, the IMS Core receives the Invite message.

Step 522: The IMS Core generates a 100 response message according to the received Invite message.

The 100 response message may indicate that the called user has received the Invite message.

Step 523: The IMS Core sends a 100 response message to the AC; correspondingly, the AC receives the 100 response message.

Step 524: The AC generates a stop Invite retransmission process according to the received 100 response message.

Step 525, the IMS Core generates 180 a message.

The 180 message may indicate that the called subscriber is already ringing.

Step 526, the IMS Core sends a 180 message to the AC; correspondingly, the AC receives the 180 message.

Step 527: The AC generates the ringback tone information of the calling user according to the received 180 message.

Specifically, when the AC receives the 180 message and the called user is already ringing, the AC generates a digital signal for the calling user to put the ring back tone control according to the received 180 message, and encapsulates the digital signal into the form of a message , which is carried under the access control protocol and transmitted to the remote node.

Step 528: The AC downloads the generated calling user ringback tone control information to the remote node; correspondingly, the remote node receives the calling user ringback tone control information sent by the AC.

Step 529: The remote node generates an analog signal of the calling user's ring-back tone control according to the reception of the ring-back tone control information of the calling user and transmits it to the calling user.

Specifically, the remote node receives the caller's ring-back tone control information sent by the AC, extracts the calling user's ring-back tone control digital signal from the calling user's ring-back tone control information, and sends the caller's ring-back tone control digital signal. The user puts the ringback tone to control the digital signal and converts the digital signal to the calling user puts the ringback tone to control the analog signal

Step 530: The remote node downloads the calling user's ring back tone control analog signal to the calling user; correspondingly, the calling user receives the calling user's ring back tone control analog signal sent by the remote node.

Step 531, the IMS Core generates a 200 message.

The 200 message may indicate that the called user has gone off-hook.

Specifically, when the called user goes off-hook, the IMS Core constructs a message that the called user has gone off-hook.

Step 532: The IMS Core sends a 200 message to the AC; correspondingly, the AC receives the 200 message.

Step 533: The AC generates the control information for the calling user to park the ringback tone according to the received 200 message, and the flow mode is changed to two-way.

Specifically, when the AC receives the 200 message and the called user has gone off-hook, the AC generates the calling user's parking ringback tone control digital signal according to the 200 message, and encapsulates the calling user's parking ringback tone control digital signal as form of the message.

Step 534: The AC downloads the generated calling user park ringback tone control information to the remote node; correspondingly, the remote node receives the calling user park ringback tone control message sent by the AC.

Step 535: The remote node generates an analog signal for stopping the generation of the ringback tone according to the reception of the control message for the calling user to park the ringback tone.

In a specific embodiment of the present invention, the remote node receives the caller park ringback tone control message, extracts the calling user park ringback tone control digital signal from the calling user park ringback tone control information, and sends The digital signal of the calling user's parking ringback tone control is converted into an analog signal of the calling user's parking ringback tone control, and the analog signal is downloaded to the calling user.

Step 536: The remote node of the remote node transmits the analog signal of the calling user parking ringback tone control to the calling user; correspondingly, the calling user receives the calling user parking ringback tone control analog signal sent by the remote node .

Step 537, the AC generates an ACK message

Step 538: The AC sends the generated ACK message to the IMS Core; correspondingly, the IMS Core receives the ACK message sent by the AC.

Step 539, the two parties conduct a voice call.

The embodiment of the present invention provides a voice service control method. By moving the control plane unit of the voice access gateway of the remote node to the access controller, the functions of the remote node are simplified, thereby reducing the size of the remote node. It can reduce the load of the node; and only need to maintain the access controller after moving up, which can reduce the maintenance cost; further, it avoids the complicated data configuration and control of the remote node, and reduces the complexity of operation and maintenance management. .

Embodiment two,

In the following, according to the system architecture of the above voice service, assuming that the communication terminal is a telephone, when the telephone is the called user and the call is successful, a specific implementation scheme is provided, as shown in FIG. 6 .

Step 601, the IMS Core generates an Invite message.

Step 602, the IMS Core sends an Invite message to the AC; correspondingly, the AC receives the Invite message.

Step 603, AC constructs a 100 response message according to the received Invite message; at the same time finds the called user according to the information carried in the Invite message, after finding the called user, generates the called user ringing control digital signal, and encapsulates the digital signal in the form of a message.

Step 604, the AC sends a 100 response message to the IMS Core; correspondingly, the IMS Core receives the 100 response message sent by the AC.

Step 605: The AC downloads the control information for generating the ringing of the called user to the remote node; correspondingly, the remote node receives the control information for the ringing of the called user sent by the AC.

Step 606: The remote node generates an analog signal of the called user's ringing according to the received control message of the called user's ringing.

In a specific embodiment of the present invention, the remote node receives the control message of the called user's ringing, extracts the called user's ringing control digital signal from the called user's ringing control message, and rings the called user. The ringer control digital signal is converted into the called user's ringer control analog signal.

Step 607: The remote node of the remote node transmits the analog ringing signal of the called user to the called user; correspondingly, the called user receives the analog ringing signal of the called user sent by the remote node.

Step 608, the AC generates 180 a message.

Step 609, the AC sends a 180 response message to the IMS Core; correspondingly, the IMS Core receives the 180 response message sent by the AC.

The 180 message can be represented as informing the calling user that the called user is ringing.

Specifically, after finding the called user and sending a ringing message to the called user, the AC constructs a 180 message to inform the calling user that the called user is ringing.

Step 610: The called user goes off-hook to generate an off-hook analog signal.

Step 611: The called user sends the generated off-hook analog signal to the remote node; correspondingly, the remote node detects the off-hook analog signal of the called user.

Step 612: The remote node generates an analog signal for the called user to stop ringing according to the detection of the called user's off-hook analog signal, and generates a digital signal of the called user's off-hook, and encapsulates the digital signal into the form of a message.

Step 613: The remote node sends the generated analog signal of the called user to stop ringing to the called user; correspondingly, the called user receives the analog signal of the called user to stop ringing sent by the remote node.

Step 614: The remote node sends the generated message of the called user off-hook to the AC; correspondingly, the AC receives the message of the called user's off-hook sent by the remote node.

Step 615: The AC generates a 200 message according to the received information that the called user is off-hook.

The 200 message can be represented as informing the calling user that the called user has gone off-hook.

Specifically, the AC extracts the called user's off-hook digital signal from the called user's off-hook information according to the received information of the called user's off-hook, and constructs a 200 message according to the called user's off-hook digital signal to inform The calling user and the called user have gone off-hook.

Step 616, the AC sends the 200 message to the IMS Core; correspondingly, the IMS Core receives the 200 message sent by the AC.

Step 617: The IMS Core generates an ACK message according to the received 200 message.

Specifically, the IMS Core knows that the called user has gone off-hook according to the received 200 message, so it constructs an ACK response message to indicate that it has received a message that the called user has gone off-hook.

Step 618: The IMS Core replies to send the generated ACK message to the AC; correspondingly, the AC receives the ACK message sent by the IMS Core.

Step 619, the two parties conduct a voice call.

The embodiment of the present invention provides a voice service control method. By moving the control plane unit of the voice access gateway of the remote node to the access controller, the functions of the remote node are simplified, thereby reducing the size of the remote node. It can reduce the load of the node; and only need to maintain the access controller after moving up, which can reduce the maintenance cost; further, it avoids the complicated data configuration and control of the remote node, and reduces the complexity of operation and maintenance management. .

Embodiment three:

In the following, according to the system architecture of the above-mentioned voice service, when the ongoing voice call needs to be released, a specific implementation scheme is provided, as shown in FIG. 7 .

Step 701: The two parties conduct a voice call.

Step 702: One of the telephones hangs up and generates an on-hook analog signal.

Step 703: The on-hook party sends the on-hook analog signal to the remote node; correspondingly, the remote node detects the on-hook analog signal.

Step 704: The remote node converts the detected on-hook analog signal into an on-hook digital signal, and encapsulates the digital signal into the form of a message.

Step 705: The remote node sends the on-hook message to the AC; correspondingly, the AC receives the on-hook message sent by the remote node.

Step 706: The AC constructs a BYE request message according to the received on-hook information.

Specifically, the AC receives the on-hook information of the on-hook user, extracts the on-hook digital signal of the on-hook user from the on-hook information of the on-hook user received by the AC, and constructs a BYE request message according to the on-hook digital signal of the on-hook user.

The BYE request message may be for releasing DSP (Digital Signal Processing, digital signal processing) resources allocated to the calling user

Step 707, the AC sends a BYE request message to the IMS Core; correspondingly, the IMS Core receives the BYE request message sent by the AC.

Step 708: The IMS Core constructs a 200 message according to the received BYE request message.

The 200 message may be approved for the request to release the DSP resources allocated to the calling user.

Specifically, the IMS Core receives the BYE request message sent by the AC, and according to the BYE request message, the IMS Core constructs a 200 message to inform that the request to release the DSP resources allocated to the calling user is approved.

Step 709: The IMS Core sends the 200 message to the AC; correspondingly, the AC receives the 200 message sent by the IMS Core.

In step 710, the resources are released, and the call ends.

The embodiment of the present invention provides a voice service control method. By moving the control plane unit of the voice access gateway of the remote node to the access controller, the functions of the remote node are simplified, thereby reducing the size of the remote node. It can reduce the load of the node; and only need to maintain the access controller after moving up, which can reduce the maintenance cost; further, it avoids the complicated data configuration and control of the remote node, and reduces the complexity of operation and maintenance management. .

The present invention provides an architecture diagram of a voice service control system, as shown in FIG. 8 , including a communication terminal 801 , a remote node 802 , an access controller 803 and a core network device 804 .

Wherein, the communication terminal 801 is used to generate a voice control analog signal or receive a voice control analog signal sent by the remote node; in general, there is at least one communication terminal connected to the remote node 802, in this case The control system architecture of the voice service of the embodiment FIG. 8 takes a communication terminal as an example, of course, it is not limited to this.

Wherein, the access controller 803 is configured to execute the above method using the access controller as an execution subject. As shown in FIG. 9 , the access controller 803 includes: an interface circuit unit 901 , a voice control conversion unit 902 , and an AG control plane unit 903 .

The interface circuit unit 901 is used to exchange messages in the voice control process with the receiving remote node 802 or the core network device 804 .

The voice control conversion unit 902 is used to obtain the voice control digital signal from the message sent by the remote node 802 received by the interface circuit unit 901, and provide it to the AG control plane unit 903, or use the voice control digital signal generated by the AG control plane unit 903. It is encapsulated into a message and carried under the access control protocol to the remote node 802 .

The AG control plane unit 903 is used to implement the control plane functions of the AG, including voice call control and service configuration control for the user. Command control such as user port ringing.

Specifically, the interface circuit unit 901 is configured to receive the first message sent by the remote node 802;

The voice control conversion unit 902 is configured to obtain the first voice control digital signal from the first message received by the interface circuit unit 901;

The AG control plane unit 903 is configured to perform voice control according to the first voice control digital signal obtained by the voice control conversion unit 902 .

Further, the AG control plane unit 903 is further configured to generate a second voice control digital signal according to the first voice control digital signal obtained by the voice control conversion unit 902;

The voice control conversion unit 902 is further configured to encapsulate the second voice control digital signal obtained by the AG control plane unit 903 into a second message;

The interface circuit unit 901 is further configured to send the second message obtained by the voice control conversion unit 902 to the remote node 802 .

Further, the AG control plane unit 903 is further configured to generate a third message according to the first voice control digital signal obtained by the voice control conversion unit 902;

The interface circuit unit 901 is further configured to send the third message generated by the AG control plane unit 903 to the core network device 804 .

Further, the interface circuit unit 901 is configured to receive the first message from the core network device 804;

The AG control plane unit 903 is configured to generate a first voice control digital signal according to the first message received by the interface circuit unit 901;

The voice control conversion unit 902 is configured to encapsulate the first voice control digital signal received by the AG control plane unit 903 into a second message;

The interface circuit unit 901 is further configured to send the second message encapsulated by the voice control conversion unit 902 to the remote node 802 .

Further, the access controller 803 further includes: an AG management plane unit 904, as shown in FIG. 10 . The AG management plane unit 904 is used for the management plane functions of the AG, so as to realize the management plane functions such as configuration, operation and maintenance of the AG.

Specifically, for the AG management plane unit 904 to implement the function of AG configuration, it may be to configure the data related to the voice service. For example, configure the SIP/H.248 interface, user data (phone number, account number, password, etc.), digital map group, etc. to the access controller 803; configure the voice service port data (current, voltage and other physical parameters) to access controller 803, so that the access controller 803 delivers the data of the voice service port to the remote node 802; saves the voice-related data, and provides query.

Specifically, the functions of the AG management plane unit 904 for implementing AG operation and maintenance management may be functions such as call emulation, testing, and fault recovery for voice services. For example, the relevant voice call information is collected and located uniformly; the voice call emulation is controlled uniformly;

Further, the AG management plane unit also supports the following management mode: in the logical management view of the voice service network architecture, the entire access subnet is virtualized as a single network element, that is, a virtual access node (AN, Access Node) , each remote node is equivalent to the remote module of the virtual access node, that is, the access control or management system in the voice service network architecture will control or manage the access subnet as a single network element. The gateway is virtualized as a large access gateway to manage, thus avoiding the increase of operation and maintenance cost. Specifically, the entire access subnet is virtualized as a virtual access node, and the virtual access node may have only one management IP address (also called a loop back address). In terms of access control or management system, what is seen is the address of the virtual access node, without the need to see the address of each physical access node, thus avoiding the allocation and management of the IP address of each physical access node. manage.

Wherein, the access control or management system in the voice service network architecture may be a network management system (NMS, Network Management System), of course not limited to this; the access gateway may be a media gateway (MG, MediaGateway), or an integrated access gateway An integrated access device (IAD, Integrated Access Device), of course, is not limited to this.

The management mode supported by the AG management plane is of great significance to the application in the FTTDP (Fibre to Drop/Distribution Point)/FTTH (Fibre to the Home) scenario, because in the FTTDP/FTTH scenario In this case, the number of remote nodes is in the same order of magnitude as the number of home users. If IP addresses are managed for each physical access node, the number of managed IP addresses will be huge, and the operation and maintenance costs will also increase relatively. The management plane is moved up, and multiple access gateways are virtualized into one large access gateway for management, which can simplify the number of management and reduce the operation and maintenance cost.

Still further, the access controller 803 is located at an OLT or an IP edge node.

Wherein, the remote node 802 is configured to execute the above method using the remote node as an execution subject. As shown in FIG. 11 , the remote node 802 includes: an interface circuit unit 1101 and a voice control conversion unit 1102 .

The interface circuit unit 1101 is used to implement a Subscriber Line Interface Circuit (SLIC, Subscriber Line Interface Circuit) function, a Coder/Decoder (CODEC, Coder/Decoder) function, and a Digital Signal Processing (DSP, Digital Signal Processing) function.

Specifically, the SLIC function is used to feed the phone, send voice frequencies, generate ringing and detect signals such as user off-hook and on-hook, and complete the processing of analog signals; the CODEC function is used to complete the conversion between analog signals and digital signals; The DSP function is used to process audio such as speech coding, echo cancellation, and Dual Tone Multi Frequency (DTMF, Dual Tone Multi Frequency) generation and detection.

The voice control conversion unit 1102 is used to realize the processing related to the voice control digital signal, and is used to convert the generated voice control digital signal in the form of a message, or receive a message from the access controller 803, thereby obtaining the voice from the access controller 803. Control digital signals.

Specifically, the interface circuit unit 1101 is used to detect the first voice control analog signal from the communication terminal 801, and convert the first voice control analog signal into the first voice control digital signal;

The voice control conversion unit 1102 is configured to encapsulate the first voice control digital signal converted by the interface circuit unit 1101 into a first message;

The interface circuit unit 1101 is further configured to send the first message to the access controller 803, so that the access controller 803 uses the first message to perform voice control.

Further, the interface circuit unit 1101 is further configured to receive the second message from the access controller 803;

The voice control conversion unit 1102 is further configured to obtain a second voice control digital signal from the second message in the access controller 803;

The interface circuit unit 1101 is further configured to convert the second voice control signal obtained by the voice control conversion unit 1102 into a second voice control analog signal, and send the second voice control signal to the communication terminal 801 analog signal.

Further, the remote node 802 further includes: an AG data plane unit, as shown in FIG. 8 , the AG data plane unit is used to realize the conversion of the voice digital signal to the VoIP packet.

Wherein, the core network device 804 is used to perform message interaction with the access controller 803 in the voice control process.

The embodiments of the present invention provide a voice service control device and system. By moving the control plane unit of the voice access gateway of the remote node to the access controller, the functions of the remote node are simplified, thereby reducing the size of the remote node. The load of the remote node; and the access controller only needs to be maintained after the move up, which can reduce the maintenance cost; further, it avoids the complex data configuration and control of the remote node, and reduces the operation and maintenance management. the complexity.

As shown in FIG. 12 , an embodiment of the present invention further provides an access controller 120, including: a receiver 1201 and a processor 1202;

The receiver 1201 is configured to receive the first message from the remote node;

The processor 1202 is configured to obtain a first voice control digital signal from the first message received by the receiver 1201; and perform voice control according to the first voice control digital signal.

Further, the access controller may further include: a transmitter 1203, as shown in FIG. 13 .

Optionally, the processor 1202 is configured to generate a second voice control digital signal according to the first voice control digital signal, and is further configured to encapsulate the second voice control digital signal into a second message; the transmitter 1203 is used for sending the second message to the remote node.

Wherein, if the first voice control digital signal is a digital signal for the calling user to pick up the phone, the second voice control information is a digital signal for playing a dial tone to the calling user.

Or optionally, the processor 1202 is configured to generate a third message according to the first voice control digital signal; the transmitter 1203 is configured to send the third message to the core network device.

Wherein, the processor 1202 is specifically configured to, if the first voice control digital signal is the digital signal of the Nth dialed number from the start of dialing, to send the digital signal of the first dialed number from the start of dialing to the Nth digital signal of the dialed number from the start of dialing Digit-map matching is performed on the digital signals of the dialed numbers, and if the matching is successful, a message for paging the called party is generated; or, if the first voice-controlled digital signal is an off-hook digital signal of the called user, the to a message indicating that the called party has gone off-hook; or, if the first voice control digital signal is a user on-hook digital signal, a message indicating that the call is terminated is generated.

Further, the receiver 1201 is further configured to receive the first message from the core network device;

The processor 1202 is further configured to generate a first voice control digital signal according to the first message; encapsulate the first voice control digital signal into a second message;

Wherein, if the first message is a message used to indicate that the called user is already ringing, the first voice control digital signal is a digital signal for playing back the ring tone to the calling user; or,

If the first message is a message used to indicate that the called user has gone off-hook, the first voice control digital signal is a digital signal to park the ringback tone to the calling user; or,

If the first message is a message for paging the called party, the first voice control digital signal is the called user ringing digital signal;

The transmitter 1203 is further configured to send the second message to the remote node, so that the remote node converts the first voice control digital signal in the second message into a first voice control analog signal, and sends the second message to the remote node. The communication terminal sends the first voice control analog signal.

As shown in FIG. 14, an embodiment of the present invention further provides a remote node 140, including: a receiver 1401, a processor 1402, and a transmitter 1403;

The receiver 1401 is used to detect the first voice control analog signal from the communication terminal;

The processor 1402 is configured to convert the first voice-controlled analog signal into a first voice-controlled digital signal; encapsulate the first voice-controlled digital signal into a first message;

The transmitter 1403 is configured to send the first message to the access controller, so that the access controller uses the first message to perform voice control.

Further, the receiver 1401 is further configured to receive the second message from the access controller;

The processor 1402 is further configured to obtain a second voice control digital signal from the second message; convert the second voice control signal into a second voice control analog signal;

The transmitter 1403 is further configured to send the second voice control analog signal to the communication terminal.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included individually, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute some steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM for short), Random Access Memory (RAM for short), magnetic disk or CD, etc. that can store program codes medium.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (13)

1. An access controller, comprising: an interface circuit unit, a voice control conversion unit, and an access gateway AG control plane unit; wherein, the interface circuit unit, configured to receive the first message sent by the remote node; the voice control conversion unit, configured to obtain the first voice control digital signal from the first message received by the interface circuit unit; The access gateway AG control plane unit is configured to perform voice control according to the first voice control digital signal. 2. The access controller according to claim 1, wherein the AG control plane unit is configured to generate a second voice control digital signal according to the first voice control digital signal; The voice control conversion unit is further configured to encapsulate the second voice control digital signal into a second message; The interface circuit unit is further configured to send the second message obtained by the voice control conversion unit to the remote node. 3. The access controller according to claim 1, characterized in that, The AG control plane unit is configured to generate a third message according to the first voice control digital signal; The interface circuit unit is further configured to send the third message generated by the AG control plane unit to the core network device. 4. The access controller according to claim 1, wherein, The interface circuit unit is further configured to receive the first message from the core network device; The AG control plane unit is further configured to generate a first voice control digital signal according to the first message from the core network device received by the interface circuit unit; The voice control conversion unit is further configured to encapsulate the first voice control digital signal generated according to the first message from the core network device into a second message; The interface circuit unit is further configured to send the second message to the remote node. 5 . The access controller according to claim 1 , wherein the access controller further comprises: an AG management plane unit, which is used for the management plane function of the AG. 6 . 6 . The access controller according to claim 1 , wherein the access controller is located at an optical line terminal OLT or a network protocol IP edge node. 7 . 7. A remote node, comprising: an interface circuit unit, a voice control conversion unit; The interface circuit unit is used to detect the first voice-controlled analog signal from the communication terminal, and convert the first voice-controlled analog signal into a first voice-controlled digital signal; the voice control conversion unit, configured to encapsulate the first voice control digital signal into a first message; The interface circuit unit is further configured to send the first message to the access controller, so that the access controller uses the first message to perform voice control. 8. The remote node according to claim 7, wherein the interface circuit unit is further configured to receive a second message from an access controller; The voice control conversion unit is further configured to obtain a second voice control digital signal from the second message; The interface circuit unit is further configured to convert the second voice control digital signal into a second voice control analog signal, and send the second voice control analog signal to the communication terminal. 9. A control system for voice services, comprising: a communication terminal, a remote node connected to at least one of the communication terminals, an access controller connected to at least one of the remote nodes, and a remote node connected to at least one of the remote nodes. core network equipment connected to the access controller; Wherein, the communication terminal is used to generate a first voice control analog signal or receive a voice control analog signal sent by the remote node; The remote node is used to detect the first voice-controlled analog signal from the communication terminal; convert the first voice-controlled analog signal into a first voice-controlled digital signal; and encapsulate the first voice-controlled digital signal into a first message; The access controller is configured to receive the first message from the remote node; obtain a first voice control digital signal from the received first message; perform voice control according to the first voice control digital signal; The core network device is configured to perform message interaction with the access controller in a voice control process. 10. A method for controlling voice service, comprising: an access controller is located at an OLT or an IP edge node; the access controller receives the first message from the remote node; Obtain a first voice control digital signal from the received first message; Voice control is performed according to the first voice control digital signal. 11. The control method according to claim 10, wherein, The performing voice control according to the first voice control digital signal includes: generating a second voice control digital signal according to the first voice control digital signal; The method further includes: encapsulating the second voice control digital signal into a second message; and sending the second message to the remote node. 12. The control method according to claim 11, wherein, If the first voice control digital signal is a digital signal for the calling user to pick up the hook, the second voice control digital signal is a digital signal for playing a dial tone to the calling user. 13. The control method according to claim 10, wherein the method further comprises: receiving the first message from the core network device; generating a first voice control digital signal according to the first message from the core network device; encapsulating the first voice control digital signal generated according to the first message from the core network device into a second message; Sending the second message to the remote node, so that the remote node converts the first voice control digital signal in the second message into a first voice control analog signal, and sends the first voice control analog signal to the communication terminal Signal.