WO2007124645A1

WO2007124645A1 - A method system and communicating apparatus for realizing the management of sip signaling network

Info

Publication number: WO2007124645A1
Application number: PCT/CN2007/000619
Authority: WO
Inventors: Lun Lian
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-04-28
Filing date: 2007-02-27
Publication date: 2007-11-08
Also published as: CN101051935B; CN101051935A

Abstract

A method for realizing the management of SIP signaling network, the method includes: the first communicating apparatus informs the second communicating apparatus of the management information of the SIP signaling network through the SIP message; after receiving the SIP message, the second communicating apparatus carries out the corresponding management according to the management information in the SIP message. A kind of system and communicating apparatus for realizing the management of the SIP signaling network is disclosed. By transmitting the management information of the SIP signaling network via the SIP message between the communicating apparatus, the present invention can realize the management of SIP signaling network, improve the call completing rate and avoid the waste of the signaling resource.

Description

Method, system and communication device for realizing SIP signaling network management The application request is submitted to Chinese Patent Office on April 28, 2006, application number is 200610078186.8, and the invention name is "a method for realizing SIP signaling network management". The priority of the Chinese Patent Application, the entire contents of which is incorporated herein by reference.

Technical field

The present invention relates to signaling network management technologies, and in particular, to a method, system and communication device for implementing SIP signaling network management.

Background technique

SIP (Session Initiation Protocol) is an application layer control protocol used to establish, modify, and terminate multimedia sessions or conferences to control multimedia sessions or conferences. SIP consists of a SIP basic protocol and a series of SIP extensions. The SIP basic protocol is defined by the IETF (The Internet Engineering Task Force) RFC 3261, and the SIP extension consists of a series of documents.

The 3GPP standardization organization further expands SIP based on the characteristics of the UMTS (Universal Mobile Telecommunications System) network service based on RFC 3455. The 3GPP (3rd Generation Partnership Projects) is aimed at SIP mobility extension. The main document is 24.229. The SIP messages that the IMS (IP Multimedia Subsystem) system can use in the 24.229 document include REGISTER^ INVITE, ACK, PRACK:, INFO, NOTIFY, OPTIONS MESSAGE, SUBSCRIBE, REFER and UPDATE.

The SIP protocol is based on the client/server mode of operation and involves two types of protocol entities: SIP User Agent and SIP Network Server. The former corresponds to the calling end system, including the user agent client (UAC, User Agent Client) and the user agent server (UAS, User Agent Server), which are equivalent to the calling party and the called party respectively. Such partitioning allows the client/server mode SIP protocol to complete control of peer-to-peer calls in the communication network. The latter is a network device that handles call signaling. Its basic functions are address resolution and user location, including proxy and redirect. Proxy server is similar to HTTP (Hypertext Transfer Protocol) proxy or SMTP (Simple Mail Transfer Protocol) MTA (Message Transfer Agent, message transmission) Send the agent), after accepting the session request, determine the next hop server according to the called address, and then forward the request. The relocation server has a role similar to the DNS (Domain Name Server) server. It does not forward the request, but returns the result of the address resolution to the calling party, and the calling party directly contacts the next hop server.

SIP has the advantages of simple implementation, good extensibility, strong multimedia session providing capability and business expansion capability, powerful user search and location capability, and close connection with existing Internet protocols, thus obtaining a wide range of applications, especially the SIP protocol. It has been adopted by the 3GPP standardization organization as a call control protocol for the UMTS (Universal Mobile Telecommunications System) R5/R6 Multimedia Subsystem (IMS).

As the number of devices communicating using SIP increases, the signaling network management function that manages SIP operations in communication is also becoming more and more important. The purpose of the signaling network management function is to enable recombination of the signaling network in the event of a device failure and control of traffic when the network is congested. Since the related signaling network management method is not defined in the SIP, when the device fails or the network is congested, the neighboring device cannot be informed, and subsequent calls will continue to be sent to the faulty device or the congested network, resulting in the call being unable to be connected or Waste of signaling resources.

Summary of the invention

The present invention provides a method for implementing SIP signaling network management, which ensures that communication devices can reliably exchange available information about signaling, thereby improving call completion rate and reducing signaling resource waste.

The present invention also provides a system and a communication device for implementing SIP signaling network management, so as to effectively manage SIP signaling and ensure reliable interaction of SIP signaling between communication devices.

To this end, embodiments of the present invention provide the following technical solutions:

An embodiment of the present invention for implementing a method for managing a SIP signaling network includes the following steps: The first communications device notifies the second communications device of the SIP signaling network management information by using a SIP message;

After receiving the SIP message, the second communication device performs corresponding processing according to the SIP signaling network management information therein.

The first communication device actively notifies the second communication device of the SIP signaling network management information by using the SIP message according to the detection result of the self; or The first communication device subscribes to the SIP signaling network management information in advance by the second communication device; the first communication device notifies the second communication to the SIP signaling network management information by using the SIP message according to the subscription of the second communication device and the detection result of the second communication device device.

An embodiment of the present invention for implementing a SIP signaling network management system includes: a first communication device and a second communication device, where

The first communication device includes:

a state detecting unit, configured to detect an operating state of the first communications device;

a signaling sending unit, configured to send, according to the detection result of the state detecting unit, corresponding SIP signaling network management information to the second communications device;

The second communication device includes:

a signaling receiving unit, configured to receive a SIP signaling network management signaling execution unit sent by the first communications device, configured to parse the SIP signaling network management information received by the signaling receiving unit, and according to the information Perform the corresponding processing.

An embodiment of the present invention for implementing a communication device for managing a SIP signaling network includes: a messaging unit that interacts with other communication devices in the network and sends the information to other communication devices

The SIP signaling network management information or the SIP signaling network management information sent by other communication devices further includes:

a state detecting unit, configured to detect an operating state of the communication device, and notify the sending and receiving unit of the detection result, where the message sending and receiving unit sends corresponding SIP signaling network management information to other communication devices according to the detection result;

a signaling execution unit, configured to parse other communication devices received by the messaging unit

The SIP signaling network manages information and performs corresponding processing based on the information.

Compared with the prior art, the beneficial effects of the present invention are:

1. The communication device can reliably exchange available information about SIP signaling so that SIP signaling can be managed;

2. When a communication device fails, the neighboring communication device can immediately know the information, thereby avoiding sending subsequent calls to the faulty device. At the same time, the neighboring device can select the normal device for signaling transfer. The call is connected normally, avoiding the waste of signaling resources; 3. When a communication device is congested, the neighboring communication device can immediately know the corresponding information, and adjust the traffic sent to the congested device according to the information, thereby improving the call completion rate;

4. When the communication device is congested or recovered from the fault state, the neighboring communication device can immediately know the corresponding information and resume the traffic sent to the originally congested communication device or the failed communication device, thereby improving the device's Utilization rate.

DRAWINGS

1 is a flowchart of an embodiment of a method for implementing SIP signaling network management according to the present invention; FIG. 2 is a schematic diagram of the present invention for transmitting SIP signaling network management information by using INFO message; FIG. 3 is a schematic diagram of transmitting SIP signaling by using NOTIFY message according to the present invention; Figure 4 is a schematic block diagram of a first embodiment of the system of the present invention;

Figure 5 is a schematic block diagram of a second embodiment of the system of the present invention;

Figure 6 is a schematic block diagram of a third embodiment of the system of the present invention;

Figure 7 is a schematic block diagram of a first embodiment of a communication device of the present invention;

Figure 8 is a block diagram showing the principle of a second embodiment of the communication device of the present invention.

detailed description

The embodiment of the present invention realizes that the SIP signaling network management information is notified to the neighboring device through the SIP message if congestion or fault occurs in the communication device or other device that needs to notify the network, and the neighboring device receives the After the SIP message, the corresponding processing is performed according to the SIP signaling network management information in the SIP message, so that the signaling information is reliably exchanged between the communication devices. The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

1 illustrates a flow diagram of one embodiment of a method for implementing SIP signaling network management in accordance with the present invention, wherein a communication device transmits signaling network management information to one or more adjacent communication devices to implement SIP signaling network management. . Only two adjacent communication devices are shown in Figure 1, and in practice there may be multiple communication devices. As shown in FIG. 1, the first communication device may notify the adjacent second communication device of the related SIP signaling network management information by using a SIP message, and after receiving the information, the second communication device sends a response to the first communication device. And perform the corresponding operation based on the information.

For example: when the first communication device fails, the information that is prohibited from being transmitted is notified to the second communication device. After receiving the information forbidden, the second communication device replies to the first communication device and immediately stops transmitting the service information belonging to the first communication device; after the first communication device recovers from the failure, the communication device is allowed to transmit. The information is sent to the second communication device, and after receiving the information, the second communication device replies to the first communication device and immediately resumes transmitting the service information belonging to the first communication device; the first communication device detects the congestion of the device, and is subject to The control delivered information informs the second communication device, and after receiving the controlled delivery information, the second communication device replies to the first communication device and adjusts the amount of traffic belonging to the first communication device according to the congestion level adjustment.

It should be noted that the failure of the communication device in the embodiment of the present invention means that a failure occurs inside the communication device and the failure does not affect the communication device to send a message to its neighbor communication device.

In an actual application, the first communications device may actively notify the second communications device of the SIP signaling network management information by using a SIP message according to the detection result of the first communications device. The SIP communication network management information may be subscribed to the first communication device in advance by the second communication device; the first communication device notifies the SIP signaling network management information by using the SIP message according to the subscription of the second communication device and the detection result of the second communication device. Two communication devices.

In a specific implementation, a SIP event package "smm" can be defined, a new MIME (Multipurpose Internet Mail Extensions) type "application/smm", which is used to carry the prohibition of delivery, permission to pass and receive Controlling the transmission of signaling network management information.

According to the ABNF (Augmented Backus-Naur Form) method, the specific definition of smm is:

MessageEvent = Inhibit / Uninhibit I Congestion

CongestionLevel = "CL" C0L0N(1* 1DIGIT)

Among them, Inhibit means that the message is forbidden, Uninhibit means that the message is allowed to be transmitted, and Congestion means that the message is controlled.

In order to enable the second communication device to receive the controlled delivery information of the first communication device, the traffic to the first communication device may be reasonably controlled according to the information, and may also be set in the controlled delivery information: according to the communication device The congestion level information defined by the congestion situation causes the second communication device to adjust the amount of traffic sent to the first communication device according to the congestion level information. For example, four different levels of congestion levels can be defined in the controlled delivery information: Level 0 (CongestionLevel - 0) indicates the end of congestion;

Level 1 (CongestionLevel = 1) indicates that congestion has occurred and the traffic needs to be reduced to 25 % of the normal amount;

Level 2 (CongestionLevel = 2) indicates that congestion has occurred and the traffic needs to be reduced to 50% of the normal amount;

Level 3 (CongestionLevel = 3) indicates that congestion has occurred and the traffic needs to be reduced to 75 % of the normal amount.

Here, only four kinds of congestion levels are exemplified. In different cases, different congestion levels can be defined according to the corresponding needs to adjust the traffic.

In the embodiment of the present invention, the SIP signaling network management information, such as an INFO message, or a NOTIFY message, or a PUBLISH message, or an OPTIONS message, or a MESSAGE message, may be transmitted between the communication devices by using a plurality of SIP messages.

Referring to FIG. 2, FIG. 2 is a schematic diagram of an embodiment of transmitting SIP signaling network management information using INFO messages. The communication device shown in FIG. 2 is two MSCe (Mobile Switching Center emulator), and the actual situation is not limited thereto, and may be multiple communication devices that use SIP for communication.

As shown in FIG. 2, when the MSCel fails or is congested, the corresponding SIP signaling network management information is transmitted to the MSCe2 through the INFO message. After receiving the IMFO message, the MSCe2 sends a response 200 to the MSCel to indicate that the INFO message is received, and according to The signaling network management information in the INFO message performs a corresponding operation.

The following describes the process of using INFO message delivery to prohibit the delivery of information, allowing the delivery of information and controlled delivery of information.

The process of using INFO message delivery to prohibit delivery of information includes the following steps:

1. After the MSCel fails, send an I PO message carrying the message prohibiting delivery to notify MSCe2 that the message body is:

Content-Type: application/smm

Content-Length:

MessageEvent = Inhibit; 2. MSCe2 sends a response 200 to the MSCel, indicating that the INFO message is received, and immediately stops the transmission of the service belonging to the MSCel.

The process of using INFO messaging to allow information to be delivered includes the following steps:

1. After the MSCel fails, send an IKFO message carrying the information that allows the delivery of the message to notify MSCe2. The message body is:

Content-Type: application/ smm

Content-Length:

MessageEvent = Uninhibit;

2. MSCe2 sends a response 200 to MSCel, indicating that the INFO message is received and the service belonging to the MSCel is immediately resumed.

The process of using INFO messaging to deliver controlled delivery information includes the following steps:

1. According to the congestion situation, the MSCel sends an INFO message carrying the controlled delivery information to notify MSCe2 that the message body is:

Content-Type: application/ smm

Content-Length:

MessageEvent = Congestion

CongestionLevel = n;

Where n is the congestion level and can be set according to different situations. For convenience of explanation, the following description is made with n equal to 0, 1, 2 or 3.

2. MSCe2 sends a response 200 to MSCel, indicating that the INFO message is received, and the corresponding traffic control is taken according to the congestion level:

Level 0 (CongestionLevel =0) indicates that no congestion or congestion has ended, and the amount of traffic belonging to MSCel needs to be restored to a normal amount;

Level 1 ( CongestionLevel = 1 ) indicates congestion, and the amount of traffic to MSCel needs to be reduced to 25 % of the normal amount;

Level 2 ( CongestionLevel = 2 ) indicates that congestion has occurred and the traffic to MSCel needs to be reduced to 50 % of the normal amount;

Level 3 (CongestionLevel = 3) indicates congestion and reduces the amount of traffic going to MSCel to 75% of normal. Referring to FIG. 3, FIG. 3 is a schematic diagram of an embodiment of the present invention for transmitting SIP signaling network management information by using a NOTIFY message:

The specific steps include:

1. MSCe2 sends a SUBSCRIBE message to the MSCel, and subscribes to the SIP signaling network management.

2. The MSCel sends a response 200 to the MSCe2, indicating that the SUBSCRIBE message is received;

3. When the MSCel fails, or the fault recovers or detects a congestion change, the MSCel informs the MSC2 of the corresponding signaling network management information through the NOTIFY message;

4. After receiving the NOTIFY message, MSCe2 sends a response 200 to the MSCel indicating that the NOTIFY message is received, and performs the corresponding operation according to the signaling network management information in the NOTIFY message.

The SIP signaling network management information can also be transmitted between the communication devices using PUBLISH, OPTIONS or MESSAGE messages. The method for implementing SIP signaling network management by using the above message is substantially the same as the method for implementing SIP signaling network management by using INFO message, except that the signaling network management message is transmitted by PUBLISH or OPTIONS or MESSAGE message instead of INFO message transmission. . Alternatively, a message network management message may be transmitted using a message different from that in the embodiment of the present invention.

Referring to FIG. 4, FIG. 4 is a schematic block diagram of a first embodiment of the system of the present invention:

In this embodiment, an embodiment of the system of the present invention includes: a first communication device 10 and a second communication device 20. The first communication device 10 includes: a state detecting unit 11, and a signaling transmitting unit 12. The second communication device 20 includes: a signaling receiving unit 21, and a signaling executing unit 22. among them,

The state detecting unit 11 is configured to detect an operating state of the first communications device. The signaling sending unit 12 is configured to send, according to the detection result of the state detecting unit, corresponding SIP signaling network management information to the second communications device, for example, by using a predefined The SIP event package and the Internet multi-purpose mail extension type carry the signaling network management information in a SIP message (such as an INFO message). The signaling network management information includes: prohibiting the second communication device from transmitting the information of the forbidden delivery of the service to the first communication device, allowing the second communication device to transmit the information allowed to be transmitted to the first communication device, and controlling The second communication device transmits information of the controlled delivery of traffic to the traffic of the first communication device. The controlled delivery information may further include: congestion according to the communication device The congestion level information defined by the situation.

The signaling receiving unit 21 is configured to receive the SIP signaling network management information sent by the first communications device, and the signaling executing unit 22 is configured to parse the SIP signaling network management information received by the signaling receiving unit, and perform corresponding according to the information. Processing, for example, stops transmitting traffic to the first communication device, or resumes transmitting traffic to the first communication device, or adjusting the amount of traffic transmitted to the first communication device.

After receiving the SIP message, the second communication device may also send an answer to the first communication device.

Referring to FIG. 5, FIG. 5 is a schematic block diagram of a second embodiment of the system of the present invention:

The difference from the embodiment shown in FIG. 4 is that a signaling construction unit 13 is added between the state detecting unit 11 and the signaling transmitting unit 12 of the first communication device to generate SIP signaling according to the detection result of the state detecting unit. The network manages the information and adds it to the SIP message that needs to be sent. By adding the signaling construction unit 13, the construction of the SIP signaling network management information can be made more flexible, and the scalability of the system can be enhanced.

The working process of the embodiment of the present invention shown in this embodiment is similar to the previous embodiment, and details are not described herein again.

In the two embodiments of the system of the present invention, the first communication device actively informs the second communication device of the SIP signaling network management information by using the SIP message according to the detection result of itself. The system embodiment of the present invention may further subscribe the SIP signaling network management information to the first communication device in advance by the second communication device; the first communication device sends the SIP signaling by using the SIP message according to the subscription of the second communication device and the detection result of the second communication device. The network management information notifies the second communication device.

Referring to Figure 6, Figure 6 is a schematic block diagram of a third embodiment of the system of the present invention:

The difference from the first embodiment of the system of the present invention shown in FIG. 4 is that, in this embodiment, the second communication device 20 further includes: a signaling subscription unit 23; and the first communication device 10 further includes: a subscription information receiving unit 14. among them,

The signaling subscription unit 23 is configured to subscribe the SIP communication network management information to the first communication device by using a SIP message;

The subscription information receiving unit 14 is configured to receive the SIP message sent by the signaling subscription unit 23, and notify the signaling sending unit 12 of the SIP signaling network management information in the SIP message.

Referring to Figure 7, Figure 7 is a block diagram showing the first embodiment of the communication device of the present invention: In this embodiment, the communication device embodiment of the present invention includes: a messaging unit 71 and a status detecting unit 72 and a signaling executing unit 73 connected thereto. The messaging unit 71 interacts with other communication devices in the network, sends SIP signaling network management information to other communication devices, or receives SIP signaling network management information sent by other communication devices. The state detecting unit 72 is configured to detect the communication. The working status of the device, and notifying the sending and receiving unit of the detection result, the messaging unit sending corresponding SIP signaling network management information to other communication devices according to the detection result; the signaling executing unit 73 is configured to parse other communications received by the messaging unit The SIP signaling network management information of the device performs corresponding processing according to the information.

For example, after detecting that the communication device is faulty, the state detecting unit notifies the messaging unit to send the prohibition delivery information for prohibiting the transmission of the service to the other communication device, and the messaging unit sends a SIP message (such as an INFO message) to the other communication device, and The signaling network management information is carried in the SIP message through a predefined SIP event package and an Internet multi-purpose mail extension type. For different detection results, the message sent by the messaging unit to other communication devices may be different, and may include: prohibiting other communication devices from transmitting the prohibited communication information to the communication device, allowing other communication devices to transmit the service permission information to the communication device, and controlling other communication. The controlled delivery information of the traffic to which the device transmits the service, and the like.

The information may be pre-configured and stored in the communication device. When the message transmitting and receiving unit needs to send to other devices according to the detection result of the state detecting unit, the corresponding information is taken out and sent to other communication devices through the SIP message.

Of course, in order to further increase the flexibility of the device, a signaling construction unit (not shown in the figure) may be disposed in the communication device embodiment of the present invention to add a corresponding to the SIP message according to the detection result of the detection unit. Signaling information.

The communication device embodiment of the present invention also subscribes to other communication devices for the required SIP signaling network management information, so as to acquire the SIP signaling network management information of other related communication devices in a targeted manner, thereby improving management efficiency. Similarly, the embodiment of the communication device of the present invention can also receive the subscription of the signaling network management information by other communication devices. At this time, if the SIP signaling network management information needs to be sent, only the corresponding message is sent to the communication device that subscribes to the information. Just fine.

Referring to FIG. 8, a schematic block diagram of a second embodiment of the communication device of the present invention is shown:

The difference from the embodiment shown in FIG. 7 is that, in this embodiment, the method further includes: a subscription unit 74 and subscription information processing unit 75. among them,

The subscription unit 74 is configured to construct subscription information and add the information to the SIP message, which is sent by the messaging unit 71 to other communication devices. The subscription information processing unit 75 is configured to parse the subscription information in the SIP message received by the messaging unit 71, and control the message transceiving unit to send the SIP signaling network management information to other communication devices according to the information.

For example, the subscription unit will add a subscription to the smm event. In the SUBSCRIBE message, the message is then sent by the messaging unit to other relevant communication devices. After the messaging unit in the communication device receives the SUBSCRIBE message of the other communication device with the subscription smm event, the subscription information processing unit parses the subscription information in the message, and controls the messaging unit to send the corresponding communication device according to the information. SIP signaling network management information.

As can be seen from the above description, with the embodiments of the present invention, the available information about SIP signaling can be exchanged reliably between communication devices, so that SIP signaling can be managed. For example, when a communication device fails, the neighboring communication device can immediately know the information, thereby avoiding sending the subsequent call to the faulty device. At the same time, the neighboring device can select the normal device for signaling transfer. The call is connected normally, avoiding the waste of signaling resources;

When a communication device is congested, the neighboring communication device can immediately know the corresponding information, and adjust the traffic sent to the congested device according to the information, thereby improving the call completion rate; when the communication device is congested or failing After the state is restored, the neighboring communication device can immediately know the corresponding information and resume the traffic sent to the originally congested communication device or the failed communication device, thereby improving the utilization of the device.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Rights request

A method for implementing SIP signaling network management, characterized in that the method includes the following steps: The first communication device notifies the second communication device of the SIP signaling network management information by using a SIP message;

After receiving the SIP message, the second communication device performs corresponding processing according to the SIP signaling network management information in the SIP message.

The method according to claim 1, wherein the step of the first communication device notifying the second communication device of the SIP signaling network management information by using the SIP message is:

The first communication device actively notifies the second communication device of the SIP signaling network management information by using the SIP message according to the detection result of itself.

The method according to claim 1, wherein the step of the first communication device notifying the second communication device of the SIP signaling network management information by using the SIP message comprises:

The second communication device subscribes the SIP signaling network management information to the first communication device in advance; the first communication device notifies the second communication device of the SIP signaling network management information by using the SIP message according to the subscription of the second communication device and the detection result of the second communication device .

The method according to any one of claims 1 to 3, characterized in that the signaling network management information is carried in a SIP message by a predefined SIP event package and an Internet multi-purpose mail extension type.

The method according to claim 1, wherein the signaling network management information comprises one or more of the following: prohibiting the second communication device from transmitting the forbidden delivery information of the service to the first communication device, allowing The second communication device transmits the allowed delivery information of the traffic to the first communication device, and controls the second communication device to transmit the controlled delivery information of the traffic to the traffic of the first communication device.

The method according to claim 5, wherein the controlled delivery information comprises: congestion level information defined according to a congestion condition of the communication device.

The method according to claim 6, wherein the step of the second communication device performing corresponding processing according to the SIP signaling network management information in the SIP message comprises: the second communication device according to the congestion The level information adjusts the amount of traffic sent to the first communication device.

The method according to claim 1, wherein the SIP message is an INK) message, or a NOTIFY message, or a PUBLISH message, or an OPTIONS message, or a MESSAGE message.

The method according to claim 1, wherein the method further comprises the step of: after receiving the SIP message, the second communication device sends a response to the first communication device.

The method according to claim 1, wherein the communication device is a mobile switching center simulator.

A system for implementing SIP signaling network management, comprising: a first communication device and a second communication device, wherein

The first communication device includes:

The second communication device includes:

a signaling receiving unit, configured to receive SIP signaling network management information sent by the first communications device;

The signaling execution unit is configured to parse the SIP signaling network management information received by the signaling receiving unit, and perform corresponding processing according to the information.

The system of claim 11, wherein the first communications device further comprises:

a signaling construction unit, configured to be connected to the state detecting unit and the signaling sending unit, respectively, configured to generate SIP signaling network management information according to the detection result of the state detecting unit, and add the information to the SIP In the message.

13. System according to claim 11 or 12, characterized in that

The second communication device further includes:

a signaling subscription unit, configured to subscribe SIP signaling network management information to the first communications device by using a SIP message;

The first communications device further includes:

a subscription information receiving unit, configured to receive a SIP message sent by the signaling subscription unit, and And notifying the signaling signaling unit of the SIP signaling network in the SIP message.

A communication device for implementing SIP signaling network management, comprising: a messaging unit, interacting with other communication devices in the network, transmitting SIP signaling network management information to other communication devices, or receiving SIP signaling sent by other communication devices The network management information, further comprising: a state detecting unit, configured to detect an operating state of the communication device, and notify the message sending and receiving unit of the detection result, and the message sending and receiving unit sends the other communication device according to the detection result Send corresponding SIP signaling network management information;

The SIP signaling network manages information and performs corresponding processing according to the information.

The communication device according to claim 14, wherein the communication device further comprises:

a subscription unit, configured to construct subscription information, and add the information to the SIP message, and send the message to the other communication device by the messaging unit.

The communication device according to claim 14 or 15, wherein the communication device further comprises -.

And a subscription information processing unit, configured to parse the subscription information in the SIP message received by the messaging unit, and control the message sending and receiving unit to send the SIP signaling network management information to other communication devices according to the information.