WO2012089055A1

WO2012089055A1 - Method and device for realizing collect call service in ip multimedia subsystem network

Info

Publication number: WO2012089055A1
Application number: PCT/CN2011/084390
Authority: WO
Inventors: 李冬青
Original assignee: 华为技术有限公司
Priority date: 2010-12-31
Filing date: 2011-12-21
Publication date: 2012-07-05
Also published as: CN102045598A

Abstract

Provided are a method and device for realizing a collect call service in an IP multimedia subsystem (IMS) network. The method includes: receiving a call request containing a collect call prefix sent by a calling subscriber in the IMS network; and sending a session initiation protocol (SIP) session request message containing the collect call identifier to a called AS according to the call request so that the called AS executes collect call processing on the called subscriber according to the collect call identifier. As the collect call identifier is added in the SIP session request message when a calling AS sends the SIP session request message of collect call to the called AS, the called AS can learn that this SIP session request message is the collect call service on the basis of this collect call identifier, thereby realizing the collect call service in the IMS network.

Description

Method and apparatus for implementing called pay service in IP multimedia subsystem network This application claims a method for implementing called pay service in IP multimedia subsystem network, which is submitted on December 31, 2010 and whose application number is 201010624682.5. The priority of the Chinese application of the device is incorporated herein by reference.

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and apparatus for implementing a called pay service in an IP multimedia subsystem network. Background technique

In the traditional Next Generation Network (NGN) and the Public Switched Telephone Network (PSTN), when the called call service is used, the caller needs to be in the call. Before the number is called, the pre-configured service prefix (for example, 90) is added. For example, user A calls user B, and user A dials 90+B. After the called party picks up the phone, both parties will hear a voice prompt, indicating that the call is The called party pays; if any party hangs up within 12 seconds (the time is configurable), the calling party and the called party are not charged. Otherwise, the call will be charged by the called party.

IP Multimedia Subsystem (IMS) is a subsystem that supports IP multimedia services. It is a core network of telecommunications next-generation core networks and independent of access technologies. IMS is based on Session Initiation Protocol (SIP). SIP is a text-based signaling protocol that works in client/server mode. IMS uses SIP call control mechanism to create, manage and terminate various types of multimedia. business. Various types of clients can establish end-to-end IP communication through IMS and obtain the required quality of service. In addition, the IMS system also involves the functions necessary to complete the service provision (such as registration, security, billing, bearer control, roaming, etc.).

However, since IP-based SIP calls are all in the IMS network, the called payment service cannot be implemented in accordance with the existing NGN or PSTN procedures. Thus, how to implement in the IMS network The called paying service is an urgent problem to be solved. Summary of the invention

Embodiments of the present invention provide a method and apparatus for implementing a called pay service in an IP multimedia subsystem network, to implement a called pay service in an IMS network.

An embodiment of the present invention provides a method for implementing a called pay service in an IMS network, including: receiving a call request that includes a called pay prefix sent by a calling user located in an IMS network; and according to the call request, to the called AS Sending a SIP session request message including the called payment identifier, so that the called AS performs a called payment process on the called user according to the called payment identifier.

The embodiment of the present invention further provides a method for implementing a called pay service in an IMS network, including: receiving a call request that includes a called pay prefix sent by a calling user located in an IMS network; and sending the call request to the MGCF according to the call request And a SIP session request message including the called payment identifier, so that the MGCF sends a call request to the non-IMS network according to the called payment identifier.

The embodiment of the present invention further provides a method for implementing a called pay service in an IMS network, including: receiving a SIP session request message that includes a called paying identity sent by a calling AS or an MGCF; The called user of the IMS network performs called pay processing. An embodiment of the present invention provides an apparatus for implementing a called pay service in an IMS network, which is included in a calling AS, and the apparatus includes:

a first receiving module, configured to receive a call request that includes a called paying prefix sent by a calling user located in the IMS network;

The first sending module is configured to send a SIP session request message including the called payment identifier to the called AS, so that the called AS performs the called payment processing on the called user according to the called payment identifier.

The embodiment of the present invention further provides an apparatus for implementing a called pay service in an IMS network, which is included in a calling AS, and the apparatus includes: a second receiving module, configured to receive a call request that includes a called paying prefix sent by a calling user located in the IMS network;

And a second sending module, configured to send, according to the call request, a SIP session request message that includes the called payment identifier to the MGCF, so that the MGCF sends a call request to the non-IMS network according to the called payment identifier.

An embodiment of the present invention provides an apparatus for implementing a called pay service in an IMS network, which is included in an MGCF, where the apparatus includes:

a third receiving module, configured to receive a SIP session request message that includes a called payment identifier sent by the calling AS;

a third sending module, configured to send, to the non-IMS network, a call request that does not include the called payment identifier, if the IMS network where the calling user is located is a pre-registration office;

The fourth sending module is configured to send, to the non-IMS network, a call request that includes a forward indicator for indicating the called service, if the IMS network where the calling user is located is the charging office.

An embodiment of the present invention provides an apparatus for implementing a called pay service in an IMS network, which is included in a called AS, and the apparatus includes:

a fourth receiving module, configured to receive a SIP session request message that includes a called payment identifier sent by the calling AS or the MGCF;

And a processing module, configured to perform called payment processing on the called user located in the IMS network according to the called payment identifier.

An embodiment of the present invention provides a device for implementing a called pay service in an IMS network, which is included in

MGCF, the device includes:

a fifth receiving module, configured to receive, by the non-IMS network, a forward indication that is used to indicate the called payment service or a call request that includes the called payment prefix;

And a fifth sending module, configured to send, according to the call request, a SIP session request message that includes the called payment identifier to the called AS.

Method and apparatus for implementing called pay service in IP multimedia subsystem network according to embodiments of the present invention When the calling AS sends a SIP session request message for the called party to the called AS, the called party's payment identifier is added to the SIP session request message, so that the called AS can know the SIP according to the called party's payment identifier. The session request message is a called pay service, thereby implementing the called pay service in the IMS network. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief description of the drawings to be used in the description of the embodiments will be briefly made. It is obvious that the drawings in the following description are some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a flowchart of Embodiment 1 of a method for implementing a called pay service in an IMS network according to the present invention; FIG. 2 is a signaling diagram of Embodiment 2 of a method for implementing a called pay service in an IMS network according to the present invention; FIG. 4 is a flowchart of Embodiment 4 of a method for implementing a called pay service in an IMS network according to the present invention; FIG. 4 is a signaling diagram of a method for implementing a called pay service in an IMS network according to the present invention; FIG. 6 is a flowchart of Embodiment 6 of a method for implementing a called pay service in an IMS network according to the present invention; FIG. 6 is a device for implementing a called pay service in an IMS network according to the present invention; FIG. 8 is a schematic diagram of Embodiment 2 of an apparatus for implementing a called pay service in an IMS network according to the present invention; FIG. 9 is a schematic diagram of Embodiment 3 of an apparatus for implementing a called pay service in an IMS network according to the present invention; FIG. 11 is a schematic diagram of Embodiment 4 of an apparatus for implementing a called pay service in an IMS network according to the present invention; FIG. 11 is a schematic diagram of Embodiment 5 of an apparatus for implementing a called pay service in an IMS network according to the present invention; . detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. based on All other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

FIG. 1 is a flowchart of Embodiment 1 of a method for implementing a called pay service in an IMS network according to the present invention. As shown in FIG. 1, the method includes:

Step 101: Receive a call request that includes a called paying prefix sent by a calling user located in the IMS network.

This embodiment can be applied to the following scenario: both the calling user and the called user are located in the IMS network. The execution entity of this embodiment is an application server (Application Server, abbreviated as AS).

When the calling user wants to use the called paying service, the calling user can add a paying prefix to the called party's telephone number when calling the called party, for example, dialing 90. The calling user sends a call request containing the called paying prefix to the called user, and the calling AS receives the call request.

Step 102: Send, according to the call request, a SIP session request message including the called payment identifier to the called AS, so that the called AS performs a called party payment process on the called user according to the called payment identifier.

After receiving the call request sent by the calling user, the calling AS determines, according to the called paying prefix included in the call request, that the call request is the called pay service, and thus, the calling AS is sent to the called AS. The SIP session request message carries the called payment identifier, so that the call request is notified to the called AS as the called payment service. The called payment identifier may be carried in the message header of the SIP session request message, or may be carried in the message body of the SIP session request message.

After receiving the SIP session request message, the called AS can learn that the call corresponding to the SIP session request message is the called payment service according to the called payment identifier, thereby performing the called fee processing on the called party.

In the embodiment of the present invention, when the calling AS sends a SIP session request message for the called party to the called AS, the called party pays the identifier in the SIP session request message, so that the called party can It is known that the SIP session request message is a called pay service, thereby implementing the called pay service in the IMS network.

2 is a signaling diagram of Embodiment 2 of a method for implementing a called pay service in an IMS network according to the present invention. The present embodiment is shown in FIG. 2, the method includes: Step 201: The calling user (UE-A) sends a call to the calling S-CSCF (Serving Call Session Control Function, service) The call session control function entity sends a call request message, where the UE-A adds the called paying prefix 90 before the called number, that is, the call request message includes the called paying prefix.

Step 202: The calling S-CSCF (ie, S-CSCF1) forwards the call request message to the calling party.

AS (ie AS-A).

Step 203: After receiving the call request message, the calling AS (ie, the AS-A) adds the called payment identifier to the SIP session request message to be sent to the called AS.

Specifically, after receiving the call request message, the calling AS analyzes the called number in the call request message, and analyzes that the call request is called and pays according to the called paying prefix in front of the called number. The service, thereby adding the called payment identifier to the SIP session request message to be sent, for example, the called payment identifier may be added in the message header, specifically: Filling in the Service-Code in the P-Asserted-Service-Info" Backward Collect Call" indicates that "Backward Collect Call" is the called payment identifier.

Step 204: The calling AS sends a SIP session request message to which the called payment identifier is added.

S-CSCF1.

Step 205: The S-CSCF1 sends the SIP session request message to the called S-CSCF (ie, S-CSCF2).

Step 206: The S-CSCF2 forwards the SIP session request message to the called AS (ie, AS-B). Step 207: The AS-B identifies, according to the called payment identifier included in the SIP session request message, that the call request service is a called pay service, and performs the processing of the called pay service on the called (UE-B).

Step 208: The AS-B sends a call request message to the S-CSCF2.

Step 209: The S-CSCF2 sends a call request message to the UE-B to connect the call connection between the UE-A and the UE-B.

In the embodiment of the present invention, the calling AS sends a SIP session request message for the called party to the called AS. The called payment identifier is added to the SIP session request message, so that the called AS can know that the SIP session request message is the called payment service according to the called payment identifier, thereby implementing the called payment in the IMS network. business.

FIG. 3 is a flowchart of Embodiment 3 of a method for implementing a called pay service in an IMS network according to the present invention. As shown in FIG. 3, the method includes:

Step 301: Receive a call request that includes a called paying prefix sent by a calling user located in the IMS network.

This embodiment can be applied to the following scenarios: The calling user is located in the IMS network, and the called user is located in the non-IMS network. For example, the calling user is located in the IMS network, and the called user is located in the PSTN network. The executive body of this embodiment is called AS.

Step 302: Send, according to the call request, a SIP session request message including a called payment identifier to an MGCF (Media Gateway Control Function), so that the MGCF sends a call request to the non-IMS network according to the called payment identifier.

After receiving the call request sent by the calling user, the calling AS determines that the call request is the called pay service according to the called paying prefix included in the call request. Since the called user is located in another network other than the IMS network, the call request sent by the calling AS is sent to other networks via the MGCF.

When the calling AS determines that the call request is the called paying service, the calling party sends the called paying identifier in the SIP session request message sent to the MGCF, so that the MGCF notifies the call request to the other network. The called payment identifier may be carried in the message header of the SIP session request message, or may be carried in the message body of the SIP session request message.

After receiving the SIP session request message, the MGCF can learn that the call corresponding to the SIP session request message is the called payment service according to the called payment identifier, and then the MGCF sends a call request to the non-IMS network where the called user is located, to The called user performs the called pay service. In the embodiment of the present invention, when the calling AS sends the SIP session request message for the called party to the MGCF, the called party pays the identifier to be added to the SIP session request message, so that the MGCF can learn the SIP session according to the called party's payment identifier. The request message is a called payment service, and then a call request is sent to other networks where the called user is located according to the called payment identifier, thereby implementing the called payment service in the IMS network.

4 is a signaling diagram of Embodiment 4 of a method for implementing a called service in an IMS network according to the present invention. This embodiment is shown in FIG. 4, and the method includes:

Step 401: The calling user (UE-A) sends a call request message to the calling S-CSCF, where the UE-A adds the called paying prefix 90 before the called number, that is, the call request message includes the called party. The prefix.

Step 402: The calling S-CSCF forwards the call request message to the calling AS (ie, AS-A). Step 403: After receiving the call request message, the calling AS adds a call notification identifier to the SIP session request message to be sent to the MGCF.

Specifically, after receiving the call request message, the calling AS analyzes the called number in the call request message, and analyzes that the call request is a called pay service according to the called paying prefix in front of the called number. This adds the called payment identifier to the SIP session request message to be sent to the MGCF. For example: Service-Code in P-Asserted-Service-Info fills in the "Backward Collect Call" indication, and "Backward Collect Call" is called. Paid logo.

Step 404: The calling AS sends a SIP session request message with the called payment identifier to the S-CSCF.

Step 405: The S-CSCF sends the SIP session request message to the MGCF.

The S-CSCF routes the SIP session request message to the MGCF, and keeps the SIP session request message with the called payment identifier.

Step 406: The MGCF sends a call request to the PSTN in the non-IMS network according to the called payment identifier included in the SIP session request message.

In the network structure of the called payment, it can be logically divided into the pre-charged office, the charging office, and the billing. The accounting office is generally the calling office, and the accounting office is generally the tandem office. The MGCF can perform different processing according to the logical location of the IMS network where the calling user is located, and specifically can be the following two processing situations:

a. If the IMS network where the calling user is located is the pre-registration office, the MGCF sends a call request that does not include the called payment identifier to the non-IMS network, where the called number in the call request carries the called payment word. crown.

b. If the IMS network where the calling user is located is the charging office, the MGCF sends a call request including a forward indicator for indicating the called service to the non-IMS network; specifically, the MGCF according to the SIP session request message The called payment identifier identifies the M bit in the Forward call indicator of the IAM (initial address message) message sent to the PSTN as 1; wherein the M bit in the Forward call indicator is 1 indicates that the call service is The called pay service; the PSTN can process the subsequent process of the called pay call according to the M bit in the Forward call indicators.

When the IMS network where the calling user is located is the charging office, the MGCF needs to give the billing office a forward charging indication, that is, the billing station needs to be notified, and the billing office has generated a bill for the called user.

Step 407: The PSTN sends a call request to the called user (UE-B) to connect the call connection between the UE-A and the UE-B.

In the embodiment of the present invention, when the calling AS sends the SIP session request message for the called party to the MGCF, the called party pays the identifier to be added to the SIP session request message, so that the MGCF can learn the SIP session according to the called party's payment identifier. The request message is a called payment service, and then a call request is sent to other networks where the called user is located according to the called payment identifier, thereby implementing the called payment service in the IMS network.

FIG. 5 is a flowchart of Embodiment 5 of a method for implementing a called pay service in an IMS network according to the present invention. As shown in FIG. 5, the method includes:

Step 501: Receive a SIP session request message that includes a called payment identifier sent by the calling AS or the MGCF. This embodiment can be applied to the following scenarios: The calling user is located in an IMS network or a non-IMS network, and the called user is located in the IMS network. The execution subject of this embodiment is the called AS.

When the calling subscriber is located in the IMS network, the process in which the calling AS sends the SIP session request message containing the called charging identifier to the called AS can be referred to the description in the embodiment shown in FIG. 1 and FIG. 2.

When the calling user is located in the non-IMS network, the call request sent by the calling user including the called paying prefix is sent to the MGCF through the non-IMS network, and the MGCF can recognize the call request as the called paying service after receiving the call request. Therefore, the MGCF adds a called payment identifier to the SIP session request message sent by the called AS to notify the called AS that the call request is a called payment service; wherein the MGCF adds the called party to the SIP session request message. The identity can be added to the message header or added to the message body.

Therefore, the called AS can receive the SIP session request message including the called payment identifier sent by the calling AS or the MGCF.

Step 502: Perform a called fee processing on the called user located in the IMS network according to the called payment identifier.

The called AS performs the called payment processing on the called user according to the called payment identifier in the SIP session request message.

In the embodiment of the present invention, the called AS receives the SIP session request message with the called payment identifier added, so that the called AS can learn that the SIP session request message is the called payment service according to the called payment identifier, and then The called user is required to perform the called payment processing, thereby implementing the called payment service in the IMS network.

FIG. 6 is a signaling diagram of Embodiment 6 of a method for implementing a called service in an IMS network according to the present invention. The present embodiment is shown in FIG. 6 on the basis of the embodiment shown in FIG. 5, where the method includes:

Step 601: After the calling user (UE-A) located in the non-IMS network initiates a call request, the called service is implemented according to the existing network implementation manner, and the call is routed through the PSTN to the MGCF in the IMS network.

The application scenario of this embodiment may be: The calling user is located in a non-IMS network, and the called user is located. IMS network.

Step 602: The MGCF analyzes the received call request.

Depending on the logical location of the IMS network where the called user is located, the MGCF will receive different call requests and perform different processing, which can be as follows:

a. If the IMS network where the called user is located is the charging office, the MGCF receives the call request containing the called paying prefix sent by the non-IMS network, that is, the called number of the call request carries the called paying prefix The MGCF can determine that the call request is the called pay service according to the called pay prefix.

b. If the IMS network where the called user is located is the post-accounting office, the MGCF receives the forward indication that is sent by the non-IMS network and is used to indicate the called service, that is, the Forward call indicators in the IAM message received by the MGCF. The M bit in the middle is 1; the MGCF can determine that the call request is the called pay service according to the M bit being 1.

Step 603: The MGCF sends a SIP session request message including the called payment identifier to the called AS according to the call request.

If the IMS network where the called user is located is the charging office, the MGCF deletes the called payment prefix and carries the called payment identifier in the SIP session request message sent to the called AS.

If the IMS network where the called user is located is the post-accounting office, the MGCF carries the called payment identifier in the SIP session request message sent to the called AS.

Step 604: The called AS sends the call request to the called user (UE-B) through the CSCF according to the called payment identifier in the SIP session request message, to connect the call connection between the UE-A and the UE-B.

One of ordinary skill in the art can understand that all or part of the steps of the above method embodiments are implemented. The foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiment; the foregoing storage medium includes: ROM, RAM, A variety of media that can store program code, such as a disk or an optical disk.

FIG. 1 is a schematic diagram of Embodiment 1 of an apparatus for implementing a called pay service in an IMS network, where the apparatus is included in a calling AS, and the apparatus includes: a first receiving module 71 and a first sending module 73.

The first receiving module 71 is configured to receive a call request that is sent by a calling user located in the IMS network and includes a called fee prefix.

The first sending module 73 is configured to send a SIP session request message including the called payment identifier to the called AS, so that the called AS performs the called payment processing on the called user according to the called payment identifier.

For the working process and working principle of each module in this embodiment, refer to the description in the foregoing method embodiments, and details are not described herein again.

FIG. 8 is a schematic diagram of Embodiment 2 of an apparatus for implementing a called pay service in an IMS network, where the apparatus is included in a calling AS, and the apparatus includes: a second receiving module 81 and a second sending module 83.

The second receiving module 81 is configured to receive a call request that is sent by the calling user of the IMS network and includes the called fee prefix.

The second sending module 83 is configured to send, according to the call request, a SIP session request message including the called payment identifier to the MGCF, so that the MGCF sends a call request to the non-IMS network according to the called payment identifier.

In the embodiment shown in FIG. 7-8, when the calling AS including any of the foregoing devices sends a SIP session request message for the called party to the called AS or the MGCF, the called party adds the called party to the SIP session request message. The identifier is such that the called AS or the MGCF can learn that the SIP session request message is a called payment service according to the called payment identifier, thereby implementing the called payment service in the IMS network. FIG. 9 is a schematic diagram of Embodiment 3 of an apparatus for implementing a called pay service in an IMS network, where the apparatus is included in an MGCF, and the apparatus includes: a third receiving module 91, a third sending module 93, and a fourth sending module 95.

The third receiving module 91 is configured to receive a SIP session request message that includes the called payment identifier sent by the calling AS.

The third sending module 93 is configured to send a call request that does not include the called payment identifier to the non-IMS network if the IMS network where the calling user is located is the pre-registration office.

The fourth sending module 95 is configured to send a call request including a forward indicator for indicating the called payment service to the non-IMS network if the IMS network where the calling user is located is the charging office.

In the embodiment of the present invention, when the calling AS sends a SIP session request message for the called party to the MGCF that includes the device, the called party adds the called party to the SIP session request message, so that the MGCF can It is known that the SIP session request message is a called payment service, and then sends a call request to other networks where the called user is located according to the called payment identifier, thereby implementing the called payment service in the IMS network. FIG. 10 is a schematic diagram of Embodiment 4 of an apparatus for implementing a called pay service in an IMS network, where the apparatus is included in a called AS, and the apparatus includes: a fourth receiving module 1001 and a processing module 1003.

The fourth receiving module 1001 is configured to receive a SIP session request message that includes the called payment identifier sent by the calling AS or the MGCF.

The processing module 1003 is configured to perform called payment processing on the called user located in the IMS network according to the called payment identifier.

11 is a schematic diagram of Embodiment 5 of an apparatus for implementing a called pay service in an IMS network according to the present invention; The apparatus is included in an MGCF, and the apparatus includes: a fifth receiving module 1 101 and a fifth transmitting module 1 103. The fifth receiving module 1101 is configured to receive a forward indication that is sent by the non-IMS network and is used to indicate a forward indication of the called payment service or a call request that includes the called payment prefix.

The fifth sending module 1 103 is configured to send a SIP session request message including the called payment identifier to the called AS according to the call request.

10 to FIG. 11. The called AS that includes the apparatus shown in FIG. 10 receives a SIP session request message to which a called payment identifier is added, where the called payment identifier in the SIP session request message , is added by the MGCF including the device shown in FIG. 11; thus, the called AS can learn that the SIP session request message is the called payment service according to the called payment identifier, and then perform the called party payment on the called user. Processing, thereby implementing the called payment service in the IMS network.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Claim

A method for implementing a called pay service in an IP multimedia subsystem IMS network, comprising:

Receiving, by the calling user located in the IMS network, a call request including a called paying prefix; sending, according to the call request, a session initiation protocol SIP session request message including the called payment identifier to the called application server AS, so as to enable the The called AS performs a called payment processing on the called user according to the called payment identifier.

2. The method according to claim 1, wherein: the message header or the message body that requests the message through the SIP session carries the called payment identifier.

3. A method for implementing a called pay service in an IP multimedia subsystem IMS network, characterized in that:

Receiving a call request for the called paying prefix sent by the calling user located in the IMS network; sending, according to the call request, a SIP session request message including the called paying identifier to the media gateway control function MGCF, so that the MGCF is configured according to The called payment identifier sends a call request to a non-IMS network.

4. The method according to claim 3, wherein: the message header or the message body that requests the message through the SIP session carries the called payment identifier.

The method according to claim 3 or 4, further comprising:

If the IMS network where the calling user is located is the pre-registration office, the MGCF sends a call request that does not include the called payment identifier to the non-IMS network;

If the IMS network where the calling user is located is an accounting office, the MGCF sends a call request containing a forward indication for indicating the called payment service to the non-IMS network.

6. A method for implementing a called pay service in an IP multimedia subsystem IMS network, comprising:

Receiving a SIP session request message including a called payment identifier sent by the calling application server AS or the media gateway control function MGCF; The called paying process is performed on the called user located in the IMS network according to the called paying identifier.

The method according to claim 6, wherein the receiving, by the MGCF, the SIP session request message including the called payment identifier further comprises:

Receiving, by the MGCF, a forward indication sent by the non-IMS network, including a forward indication for indicating the called payment service, or a call request including the called payment prefix;

The MGCF sends a SIP session request message including the called payment identifier according to the call request.

The method according to claim 6 or 7, wherein: the called payment identifier is carried by a message header or a message body of the SIP session request message.

A device for implementing a called pay service in an IP multimedia subsystem IMS network, which is included in a calling application server AS, wherein the device includes:

a second receiving module, configured to receive a call request that includes a called paying prefix sent by a calling user located in the IMS network;

a second sending module, configured to send, according to the call request, a SIP session request message that includes a called payment identifier to the media gateway control function MGCF, so that the MGCF sends a call request to the non-IMS network according to the called payment identifier. .

1 . An apparatus for implementing a called pay service in an IP multimedia subsystem IMS network, which is included in a media gateway control function MGCF, wherein the apparatus includes:

a third receiving module, configured to receive a SIP session that includes the called payment identifier sent by the calling AS Request message

12. An apparatus for implementing a called pay service in an IP multimedia subsystem IMS network, which is included in a called application server AS, wherein the apparatus comprises:

a fourth receiving module, configured to receive a SIP session request message that is sent by the calling AS or the media gateway control function MGCF and includes the called charging identifier;

A device for implementing a called pay service in an IP multimedia subsystem IMS network, which is included in a media gateway control function MGCF, wherein the device includes:

And a fifth sending module, configured to send, according to the call request, a SIP session request message that includes the called payment identifier to the called application server AS.