CN1581754A - Method for displaying short number of calling user for incoming number display - Google Patents

Abstract

A method for displaying the calling user's short number by "caller ID", in which a CDMA network user is the calling user, and the method realizes "caller ID display" when the CDMA user is the calling user by transferring the caller number change process to the GSM network. "Display its short number, so that when the CDMA network protocol does not support the "Caller ID" to display the calling short number, it realizes the same function as the GSM network "Caller ID" displaying the calling short number. This method does not need To modify the CDMA switch software, there is no special requirement for the CDMA switching network.

Description

A method for "Caller ID" to display the calling user's short number

technical field

The invention relates to a "caller display" method, in particular to a "caller display" method for displaying a calling user's short number.

Background technique

In a virtual private network (Virtual Private Network, VPN) business group, each phone number not only has a real number (also known as a long number) assigned by the operator, but also the VPN group itself can assign a number to each VPN user. A short number (short number for short), so that when calling each other within the group, the short number can be used directly. In the VPN service, it is a very important service feature that the called party "Caller ID" displays the short number of the calling VPN user. Because the short number is not only easy to remember and dial, but also it is easy for users to distinguish whether the call is a call within the same group according to the short number, so that users can fully experience the superiority of VPN services and improve the brand effect of VPN services.

In the GSM standard protocol specification, the signaling process and corresponding parameters for realizing the "Caller ID" to display the short number of the calling VPN user are clearly defined, so the GSM VPN service on the current network already supports the called user's "Caller ID" to display the calling user cornet. However, because the CDMA standard protocol specification does not specify how to modify the calling number, in the CDMA VPN service or integrated intelligent network VPN service on the existing network, when the calling user is a CDMA user and the called user is a CDMA user or a fixed phone user, the called user "Caller ID" can only display the long number of the calling user, which greatly affects the superiority of the VPN service.

In order to solve the above problems, the industry realizes "Caller ID" to display the caller by modifying the CDMA standard protocol and cooperating with modifying the software used by the CDMA switch (Mobile Switch Center/Service Switching Point, MSC/SSP). cornet. Its reference process is shown in Figure 5, including the following steps:

Suppose there are two CDMA users A and B, they are VPN users of the same group. The VPN long number of user A is 13305190001 (the short number assigned by the group is 2001), and the VPN long number of user B is 13305190002 (the short number assigned by the group is 2002). In order to simplify the process, in this embodiment, user A and user B are currently in the same MSC/SSP (for a CDMA network, generally the MSC and SSP are integrated, hereinafter referred to as MSC).

1. The calling user dials the called party to continue the call. Suppose that user A dials user B, and the dialed number is user B's short number 2002 or long number 13305190002. The MSC of the originating office and the Service Control Point (SCP) ) to display the "Caller ID" as a short number. Here we focus on the analysis of the MSC's handling of the called business process (since this solution does not make any changes to the calling process, it will not be described in detail here).

2. When the called user triggers a smart call, and the MSC judges that the called user number is a CDMA mobile user number and triggers a mobile terminal (Mobile Termination) trigger, the MSC sends a LOCREQ message to the Home Location Register (Home Location Register, HLR).

3. The HLR returns the smart feature of the called user, that is, returns the locreq message, which contains trigger list information: Initial Termination, Location, Called Routing Address Available, etc.

4. The called user triggers the intelligent service to the service control point (SCP), and the MSC detects the initial termination (InitialTermination) trigger, and then sends the ANLYZD message to the SCP. The main parameters in the message are: calling number (CallingPartyNumberDigits), called Call Number (MDN).

5. SCP authenticates the called user and analyzes the display mode of the called party. If the authentication fails, the service is suspended and the call is cut off; if the authentication succeeds, the SCP analyzes the calling number and called number contained in the ANLYZD message. The calling and called users are VPN users of the same group, and this call is an intranet call (that is, a call within the same group); then the SCP judges the "Caller ID" mode of the called user (user B), if the called user ( User B) "Caller ID" mode is to display the short number of the calling number, then query the database, find out the corresponding short number (2001) from the long number (13305190001) of the calling number (the number of user A), and send the short number The number is stored in the DisplayText parameter of the anlyzd message and sent to MSC. The MSC finds that the received anlyzd message contains the DisplayText parameter, and analyzes that it is the calling short number 2001, then saves the calling short number.

6. The MSC queries the HLR for the called routing information. The MSC analyzes that the Location trigger is currently triggered, and sends a LOCREQ message to the HLR to obtain the current location of the called user.

7. The HLR returns the called routing information to the MSC, that is, sends a locreq message to the MSC.

8. The called user triggers the called routing address available (Called Routing Address Available) trigger, and the MSC detects the called routing address available trigger, and sends an ANLYZD message to the SCP.

9. SCP is called further authentication. This authentication mainly analyzes the parameter information that cannot be obtained in the previous ANLYZD message, and determines the rate of this call. Then SCP returns an LYZD response message, instructing MSC to continue to connect called.

10. The call is connected to the called party, and the called party rings, and the MSC sends a "ringing" message to the mobile phone, in which the short number 2001 of the calling user saved above is sent to the mobile phone, so that the mobile phone can display the calling short number no.

In short, the Service Control Point (SCP) sends the calling short number to be displayed to MSC/SSP through the DisplayText parameter, and the MSC/SSP uses the number in the DisplayText parameter to replace the long number of the calling user , and use this parameter to replace the original calling number when the MSC/SSP sends a "ringing" message to the mobile phone, so as to realize the "caller ID" display of the calling short number.

However, the above-mentioned technical solution needs to be implemented by modifying the CDMA standard protocol and modifying the software used by the CDMA switch (MSC/SSP), thereby requiring each switch manufacturer to modify the switch software, resulting in difficulty in online promotion. In addition, even if the MSC/SSP of each switch manufacturer supports this modification method, all MSC/SSP software needs to be upgraded, resulting in a large amount of engineering work and a relatively large impact on the network.

Contents of the invention

Based on the shortcomings of the above-mentioned technical solutions, the purpose of the present invention is to provide a method for displaying the short number of the calling party by "Caller ID" when the CDMA network user is used as the calling party. The aforementioned functions can be realized under the premise of using the software.

The method for displaying the calling user's short number by "caller ID" of the present invention comprises the following steps:

A. CDMA network users access the mobile switching center of the CDMA network through the base station of the CDMA network. The mobile switching center of the CDMA network triggers the service to the integrated service control point, and the integrated service control point analyzes the service. If it meets the set conditions Just modify the called routing number, and route the call to the GSM network gateway capable of triggering services;

B. The GSM network gateway with service triggering capability triggers the service to the integrated service control point;

C. The integrated service control point modifies the calling number to a short number, and strips off the routing number added before the called number when it is modified;

D. The GSM network gateway with service triggering capability performs further routing according to the called number after stripping the routing number and finally connects to the called user.

Wherein, in step A, after the integrated service control point modifies the called routing number, it issues it to the mobile switching center of the CDMA network, and the mobile switching center of the CDMA network routes the call to the service provider according to the issued called number. GSM network gateway with trigger capability.

Compared with the prior art, the method for displaying the calling user's short number by "Caller ID" of the present invention realizes the "Caller ID" displaying the short number of the CDMA user as the calling user by transferring the caller number change process to the GSM network , so that under the situation that the CDMA network protocol does not yet support the "caller ID" display of the calling short number, the function of "caller ID" displaying the calling short number the same as that of the GSM network is realized, and this method does not need to modify the CDMA switch ( MSC/SSP) software, there is no special requirement for CDMA switching network.

Description of drawings

FIG. 1 is a schematic diagram of the network architecture of the method of displaying the calling user's short number by "Caller ID" in the present invention.

FIG. 2 is a flow chart of calling number change signaling in the method of displaying the calling party's short number in the "incoming caller ID" of the present invention.

Fig. 3 is a flow chart of calling number change signaling in the first embodiment of the present invention.

Fig. 4 is a flow chart of calling number change signaling in the second embodiment of the present invention.

Fig. 5 is a signaling flowchart of calling number change in the prior art.

Detailed ways

Taking the integrated intelligent network as an example, the specific implementation manner of the present invention will be described in conjunction with the accompanying drawings.

As shown in Figure 1, the integrated intelligent network includes GSM network, CDMA network and fixed telephone network at the same time. According to the GSM standard protocol specification, the GSM VPN called user on the existing network already supports "Caller ID" to display the short number of the calling user. Since the CDMA standard protocol specification does not clearly define how to realize the "Caller ID" to display the short number of the calling VPN user, so when the CDMA calling user dials the called user, in order to realize the "Caller ID" display of the short number of the calling VPN user, the present invention The call is routed to the GSM network, and the "Caller ID" is implemented by the GSM network to display the short number of the calling party.

With reference to Fig. 2, the calling number change signaling process of the present invention's " caller ID " display calling party's short number method comprises the following steps:

1. Now assume that user A and user B are CDMA users, user D is a fixed telephone user of the Public Fixed Telephone Network (PSTN), and user E is a fixed telephone user of a private branch exchange (PBX). Now user A dials user B, or user A dials user D (the process of user A dialing user E is similar to that of user A dialing user D).

2. VPN user A accesses the mobile switching center (referred to as C-MSC) of the CDMA network through the base station of the CDMA network. Since user A is an intelligent user, the C-MSC will trigger the service to the integrated service control point (referred to as ISCP) , ISCP analyzes that the user is a VPN user, this call is an intra-group call, and the called "Caller ID" needs to display the short number of the calling party, so the called routing number is changed, that is, the called number is changed to "700+called" Call the long number" (assuming that the CDMA network modifies the routing number of the calling number to 700), and then sends it to the C-MSC through the orreq message, and the C-MSC performs routing according to the called number issued by the ISCP.

3. Since the C-MSC has previously configured a route from access code 700 to a GSM network gateway (G-GTSSP for short) capable of triggering services, the C-MSC connects the call to the G-GTSSP.

4. Since G-GTSSP has previously configured 700 as a special number trigger, G-GTSSP will trigger the service to ISCP.

5. Since ISCP previously configured 700 to modify the calling number prefix for CDMA, ISCP changes the calling number to a short number through the CONNECT message, and strips the routing number 700 before the called number.

6. G-GTSSP performs further routing according to the called number stripped of 700. If the called is a CDMA network user, the call is routed to the gateway C-GMSC of the CDMA network, and finally connected to the called user of the CDMA network; If the called is a PSTN fixed telephone user, the call is connected to the gateway of the fixed telephone network, and finally connected to the fixed telephone called user; if the called is a PBX fixed telephone user, the call is connected to the "IP front-end device" ( Here, the IP front-end device refers to a switch that supports connecting the PBX switch to the integrated intelligent network), and finally connects to the PBX called user. For the situation that the called party is a GSM user, because the GSM called signaling process supports "Caller ID" to display the short number of the calling party, it is not directly related to this solution, and no further description is given here.

The signaling process involved in the above technical solution will be further described in detail below with reference to the accompanying drawings.

Embodiment 1 The process of CDMA user A dialing CDMA user B

Referring to FIG. 3 , this figure describes the signaling flow of calling number redirection when CDMA user A dials CDMA user B. Since there is a standard signaling interaction between the relevant entity and the Home Location Register (HLR), the part of the signaling interaction between the relevant entity and the HLR is omitted in the figure. Now assume that the access code of the calling number is changed to 700 (this number can be configured during actual networking); the user number of CDMA VPN user A is 13303000001, and the corresponding short number is 2001; The short number is 2002. User A dials 13003000002 or 2002 to call user B. The call is connected normally.

The above signaling process includes the following steps:

1. CDMA VPN user A dials CDMA VPN user B (here calling user A can dial user B's long number 13303000002, or call user B's short number 2002), the mobile switching center (C-MSCa for short) of the CDMA network analyzes If the calling user A is a CDMA smart user, the VPN smart service is triggered, and an ORREQ message is sent to the integrated service control point (ISCP for short).

2. The ISCP authenticates the calling user. Firstly analyze whether user A has registered VPN service, if not, then cut off the call; if the called number dialed by calling user A is the long number 13303000002 of user B, then analyze whether A and B belong to the same VPN group user , if they do not belong to the same group, do not change the calling number, and process according to the original process; if the calling user A dials the short number 2002 of user B, analyze whether the short number is valid, that is, query the database to obtain the corresponding short number Long number, if the corresponding long number is not found, cut off the call; then further analyze whether user B requires the "Caller ID" to display the short number of the calling party, if it is not necessary to display the short number of the calling party, do not change the calling number, press original process. If user B requests to display the short number of the calling user, ISCP sends an orreq message to C-MSCa, and the TermList parameter in the orreq message is set to "access code 700 + long number of user B 13303000002". Among them, user B requires "caller ID" to display the short number of the calling number, which is realized in this way: that is, before using the service, user B first registers for account opening, that is, registers at the business hall to open the "caller ID" display of the short number of the calling number Business. When this service is not needed, apply for cancellation of this service through the business hall, and like this, "Caller ID" returns to the default mode of displaying the calling user's long number.

3. Calling user A triggers the "Calling Routing Address Available" trigger. C-MSCa detects that the calling party triggers the "calling routing address is available" trigger, and sends the ANLYZD message to the ISCP.

4. The ISCP further authenticates the calling user A. ISCP receives the ANLYZD message and performs further authentication on user A. This authentication mainly analyzes the parameter information that cannot be obtained in the aforementioned ORREQ message, and determines the rate of this call, and then ISCP returns the anlyzd response Message indicating C-MSCa to connect normally.

5. The call is routed to the GSM network gateway (G-GTSSP for short), and the number change process is triggered. The C-MSCa routes the call to the G-GTSSP according to the called number prefix 700, and the G-GTSSP triggers the service according to the special number 700 and reports the IDP message to the ISCP.

6. ISCP number change processing. After ISCP analyzes that calling user A triggers the process of modifying the calling number, it sends a CONNECT message, in which the parameter Redirecting Party Number is set to the long number 13303000002 of called user B, and the parameter Generic Number is set to into the short number 2001 of calling user A. Wherein, modifying the calling number through the parameter general number parameter is a standard number changing processing method in the GSM network.

7. The process of G-GTSSP number change and routing to CDMA gateway. G-GTSSP performs routing connection according to the called number 13303000002 in the redirected number. Since the called number is a CDMA user number, the call is routed to the CDMA gateway (C-GMSC for short). At this time, the calling number is the modified user A The short number 2001.

8. The called user B triggers the intelligent service to the ISCP. C-GMSC analyzes that the called user is a CDMA user, and the called party signs up for the Initial Termination (Initial Termination) trigger, C-GMSC sends the ANLYZD message to the ISCP, and the calling party number (CallingPartyNumberDigits) in the message is set to 2001, and the called party The number (MDN) is set to 13303000002.

9. ISCP authenticates the called user. ISCP analyzes the ANLYZD message, finds that the calling number is a short number, and determines that this call is a call within the VPN group, and the calling number is a modified short number. ISCP queries the database according to the called number 13303000002 and short number 2001, and obtains the calling number. Call user A's long number 13303000001, send an anlyzd message after the called user is authenticated, and instruct C-GMSC to continue the call.

10. The called user triggers the "Called Routing Address Available" trigger. The C-GMSC detects that the called party triggers the trigger of "the called routing address is available", and sends the ANLYZD message to the ISCP.

11. The ISCP further authenticates the called user. This authentication mainly analyzes the parameter information that cannot be obtained in the ANLYZD message sent by the aforementioned C-GMSC, and determines the charging rate of this call, and then ISCP returns an LYZD response message to instruct C-GMSC to connect normally.

12. C-GMSC connects the call to the mobile switching center (C-MSCb) of the CDMA network where the called user is located, C-MSCb connects the call to called user B, and C-MSCb sends a "ringing" message to the mobile phone , the calling number of the message is the short number 2001 of user A, the called mobile phone rings, and the called mobile phone displays the calling short number.

13. The called user picks up the phone, C-MSCa and C-MSCb report the OANSWER and TANSWER operations respectively, and the ISCP starts charging for the called party and the called party.

14. The called party hangs up, C-MSCa and C-MSCb report disconnection messages ODISCONNECT and TDISCONNECT respectively, and the call ends (if the calling party hangs up first, the procedure is similar to that of the called party, but the release reason RELCAUSE is "calling party hangs up") .

Example 2 The call flow of CDMA user A dialing fixed-line user D

Referring to FIG. 4 , this figure describes the signaling process of calling number diversion when CDMA user A dials fixed-line user D. Since there is a standard signaling interaction between the relevant entity and the Home Location Register (HLR), the part of the signaling interaction between the relevant entity and the HLR is omitted in the figure. Now assume that the access code of the calling number is changed to 700 (this number can be configured during actual networking); the user number of CDMA VPN user A is 13303000001, and the corresponding short number is 2001; The short number is 2003. User A dials 01066660003 or 2003 to call user D. The call is connected normally.

The above signaling process includes the following steps:

1. CDMA VPN user A dials fixed-line VPN user D (assuming that user D's long number is 01066660003 and short number is 2003, calling user A can dial its long number or short number), the mobile switching center of the CDMA network (referred to as C- MSCa) analyzes that user A is a CDMA smart user, triggers the VPN smart service, and sends an ORREQ message to the integrated service control point (ISCP for short).

2. ISCP authenticates the calling user. Firstly, it is analyzed whether user A has registered the VPN service, and if the VPN service is not registered, the call is cut off. If the called number dialed by calling user A is user D's long number 01066660003, analyze whether A and D belong to the same VPN group user; if calling user A dials user D's short number 2003, analyze whether the short number is valid , that is, query the database to obtain the long number corresponding to the short number. If the corresponding long number is not found, the call is cut off. Further analyze whether user D requires the "Caller ID" to display the short number of the calling number. If it is not necessary to display the short number of the calling number, do not change the calling number and process according to the original process. If user D requests to display the calling user's short number, the ISCP sends an orreq message to C-MSCa, and sets the TermList parameter in the orreq message to "access code 700 + user D's long number 01066660003". Among them, the user D requires "caller ID" to display the short number of the calling number, which is realized in this way: that is, before using the service, the user D first registers for account opening, that is, registers at the business hall and opens the "caller ID" to display the short number of the calling number Business. When this service is not needed, apply for cancellation of this service through the business hall, and like this, "Caller ID" returns to the default mode of displaying the calling user's long number.

3. The calling user triggers the "Calling Routing Address Available" trigger. C-MSCa sends ANLYZD message to ISCP after detecting that the calling party has triggered the "calling routing address is available" trigger.

4. The ISCP further authenticates the calling user A. ISCP receives the ANLYZD message, and performs further authentication on user A. This authentication mainly analyzes the parameter information that cannot be obtained in the above-mentioned ORREQ message, and determines the rate of this call, and then ISCP returns the anlyzd response Message indicating C-MSCa to connect normally.

5. The call is routed to the G network gateway, triggering the number change process. C-MSCa routes the call to the gateway of the GSM network (G-GTSSP for short) according to the called number prefix 700, and the G-GTSSP triggers the service according to the special number 700, and reports the IDP message to the ISCP.

6. ISCP number change processing. ISCP analyzes that calling user A triggers the process of modifying the calling number, and sends a CONNECT message, in which the parameter redirection number is set to the long number 01066660003 of called user D, and the parameter general number is set to calling user A's short number 2001.

7. The process of G-GTSSP number change and routing to the public fixed telephone network (PSTN for short) gateway. G-GTSSP performs routing connection according to the called number 01066660003 in the redirected number, and finds that the called number is a PSTN user number, and then routes the call to the PSTN gateway, where the calling number is the modified short number 2001 of user A.

8. Since the called user D is a fixed telephone user, the PSTN gateway does not trigger the intelligent service, and directly connects the call to the local office (Local Station) where the called user is located.

9. The local office sends a "ringing" message to the fixed telephone, and the calling number of the message is exactly the short number 2001 of user A, and the called phone rings, and what is displayed on the phone at this moment is the calling short number.

10. The called user picks up the phone, C-MSCa reports the OANSWER operation, and ISCP begins to charge the calling party.

11. The called party hangs up, the C-MSCa reports the disconnection message ODISCONNECT, and the call ends (if the calling party hangs up first, the procedure is the same as that of the called party, except that the release reason RELCAUSE is "the calling party hangs up").

The process of CDMA VPN user A dialing PBX fixed phone user E is similar to the process of user A dialing user D, and will not be described in detail here.

Claims (10)

1, the method for a kind of " caller identification " display of calling user short codes, wherein the cdma network user is characterized in that comprising the steps: as the calling subscriber

A, cdma network user are linked into the mobile switching centre of cdma network by the base station of cdma network, the mobile switching centre of cdma network triggers professional to the integrated service control point, the integrated service control point is analyzed this business, as meet to impose a condition and just revise called routing number, route the call to the GSM net gateway of professional triggering ability;

B. there is the GSM net gateway of professional triggering ability to trigger professional to the integrated service control point;

C. the integrated service control point is modified as cornet with calling number, and peels off the routing number that is added in when it is revised before the called number;

D., the GSM net gateway that professional triggering ability arranged is done further route and finally is routed to the called subscriber according to peeling off called number behind the routing number.

2, the method for claim 1, it is characterized in that: the integrated service control point is after revising called routing number in the steps A, it is issued to the mobile switching centre of cdma network, and the mobile switching centre of cdma network routes the call to the GSM net gateway of professional triggering ability according to this called number that issues.

3, method as claimed in claim 1 or 2, it is characterized in that: described the imposing a condition of steps A is meant that described cdma network user is the VPMN user, this calling is to call out in the VPMN group, and called " caller identification " needs the cornet of display of calling.

4, method as claimed in claim 3 is characterized in that: the described integrated service of steps A control point issues called routing number and issues by orreq message to the mobile switching centre of cdma network.

5, method as claimed in claim 4 is characterized in that: the described integrated service of step C control point is modified as cornet with calling number and is undertaken by sending CONNECT message.

6, method as claimed in claim 5 is characterized in that: the called routing number of the described modification of steps A is the access code that disposes when adding networking before the called number.

7, method as claimed in claim 1 or 2 is characterized in that: if called be the cdma network user, have the GSM net gateway of professional triggering ability then to route the call to the gateway of cdma network, finally be routed to the called subscriber of cdma network.

8, method as claimed in claim 1 or 2, it is characterized in that: if called be public fixed-line telephone network fixed telephone subscriber, the GSM net gateway that professional triggering ability is arranged finally is routed to the landline telephone called subscriber then with the gateway of call proceeding to fixed-line telephone network.

9, method as claimed in claim 1 or 2, it is characterized in that: if called be the PBX fixed telephone subscriber, there is the GSM net gateway of professional triggering ability then " IP front end processor " to be arrived in call proceeding, finally is routed to the PBX called subscriber.

10, method as claimed in claim 1 or 2, it is characterized in that: when the cdma network user does the caller user, it is to adopt display of calling user's trombone mode or calling subscriber's cornet mode that cdma network called subscriber and landline telephone called subscriber can select " caller identification " mode arbitrarily.

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