CN102487341B - Talk detection method, device and session initial protocol server - Google Patents

Talk detection method, device and session initial protocol server Download PDF

Info

Publication number
CN102487341B
CN102487341B CN201010571295.XA CN201010571295A CN102487341B CN 102487341 B CN102487341 B CN 102487341B CN 201010571295 A CN201010571295 A CN 201010571295A CN 102487341 B CN102487341 B CN 102487341B
Authority
CN
China
Prior art keywords
sip server
session
message
transmit leg
testing result
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201010571295.XA
Other languages
Chinese (zh)
Other versions
CN102487341A (en
Inventor
贺晋宁
范珂
黄永平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN201010571295.XA priority Critical patent/CN102487341B/en
Priority to PCT/CN2011/075940 priority patent/WO2012071882A1/en
Publication of CN102487341A publication Critical patent/CN102487341A/en
Application granted granted Critical
Publication of CN102487341B publication Critical patent/CN102487341B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5041—Network service management, e.g. ensuring proper service fulfilment according to agreements characterised by the time relationship between creation and deployment of a service
    • H04L41/5054—Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses talk detection method, device and session initial protocol server, the method comprises: session initiation protocol sip server, after receiving the message for asking to set up business, determines whether that needing to initiate User Status detects; Sip server is when User Status detection initiated by needs, and the first session setup existed on sip server before the transmit leg to message detects, and obtains testing result; Sip server determines whether to set up business according to testing result.By invention increases Consumer's Experience.

Description

Talk detection method, device and session initial protocol server
Technical field
The present invention relates to the communications field, in particular to a kind of talk detection method, device and session initial protocol server.
Background technology
Conversation initialized protocol (Session Initiation Protocol, referred to as SIP) simple by means of it, be easy to expansion, be convenient to the plurality of advantages such as realization and progressively become next generation network (Next Generation Network, referred to as NGN) and IP multimedia system (IP Multimedia Subsystem, referred to as IMS) in popular protocol.
Under normal circumstances, the session that sip server all can engage in the dialogue interior to sip terminal and other connection devices detects, and carries out real-time detection and control to resource (such as, User Status, data field etc.).But; when Network Abnormal or terminal equipment cause information drop-out extremely; the resource information that sip server is preserved is inconsistent with actual information state, and when user initiates newly to call out again, sip server can do to request the process made mistake according to the user profile retained in database.Below this is illustrated.
Sip server end and terminal (or miscellaneous equipment is there is in Fig. 1 according to prior art, below for convenience, below terminal or other equipment are referred to as terminal) flow chart that the inconsistent situation of User Status produces, as shown in Figure 1, this flow process comprises the steps:
Step S101, proxy server (Proxy Server) receives the INVITE that terminal request sets up calling, and this INVITE does not have TO TAG, belongs to the outer message of dialogue;
Step S102, Proxy Server forwards INVITE and asks opposite side;
Step S103, after terminal receives INVITE (dialog1) message, agrees to set up session, sends 200OK response;
Step S104, Proxy Server forwards 200OK and responds opposite side;
Step S105, terminal represents confirmation for 200OK, sends ACK, realizes 3 sides and shake hands;
Step S106, Proxy Server forwards ACK to opposite side;
Step S107, terminal sends BYE message to Proxy Server, require releasing resource, but due to Network Abnormal or other reasons, this information drop-out, causes the resource information in Proxy Server and terminal inconsistent;
Step S108, terminal initiation session again, sends INVITE (dialog2) to Proxy Server;
Step S109, Proxy Server checks User Status, and find that user converses, if user does not have signing service, then reply 486, the business such as divert when busy if user has contracted, then do business operation.
Step S110, terminal replies ACK reply.
In agreement RFC4028, propose a kind of method of cycle detection User Status in order to solve the problem, be explained below.
When server as user agent (User Agent, referred to as UA) time, if exist 4028 detect, that need wait for Session Timer (session timer) time-out, just can detect resource; If do not have this to detect, so need to restart terminal or other ways ability releasing resource; If server as agency (PROXY), when unlatching 4028 detects, when sessiontimer then, PROXY just can discharge the resource oneself taken, but can not send BYE message, if do not opened, then can take always.Although propose the scheme of above-mentioned cycle detection User Status at RFC4028, for legacy network, normally do not support 4028 detections, in addition, even if support 4028 to detect to need that a period of time could releasing resource yet.
Therefore, in the prior art, when user initiates business (such as, call business), still likely this service fail can be caused.Thus reduce Consumer's Experience.
Summary of the invention
Main purpose of the present invention is to provide a kind of talk detection method, device and sip server, at least to solve the problem.
According to an aspect of the present invention, provide a kind of talk detection method, comprising: session initiation protocol sip server, after receiving the message for asking to set up business, determines whether that needing to initiate User Status detects; Described sip server is when User Status detection initiated by needs, and the first session setup existed on described sip server before the transmit leg to described message detects, and obtains testing result; Described sip server determines whether to set up described business according to described testing result.
Preferably, described sip server detects described first session setup, and obtain testing result and comprise: described sip server sends the message carrying the identification information of described first session to described transmit leg, indicate described transmit leg to detect described first session; Described transmit leg carries out detecting and described testing result is sent to described sip server; Described sip server obtains described testing result.
Preferably, described sip server is receiving under the message scenario for asking to set up call business, described sip server determines whether that needing to initiate User Status detection comprises: described sip server inquiry local resource, when determining that the transmit leg of described message is in another session, initiating User Status and detecting.
Preferably, described sip server detects described first session setup, and obtains testing result and comprise: described sip server sends the message carrying the identification information of described first session to described transmit leg; Whether described transmit leg detects described first session exists, and described testing result is sent to described sip server; Described sip server obtains described testing result.
Preferably, according to described testing result, described sip server determines whether that setting up described business comprises: described sip server is in the non-existent situation of described first session, upgrade its local resource information state, discharge the resource corresponding with described first session, and set up described call business; Described sip server is deposited in case in described first session, sends be used to indicate just busy message to described transmit leg.
Preferably, after described sip server receives the message for setting up call business, also comprise: described sip server sends to described transmit leg and is used for indicating described sip server attempting setting up the message of described call business to described transmit leg.
According to a further aspect in the invention, additionally providing a kind of session checkout gear, comprising: the first determination module, for after receiving the message for asking to set up business, determining whether that needing to initiate User Status detects; Detect initiation module, for initiating User Status detection at needs, the first session setup existed on described sip server before the transmit leg to described message detects, and obtains testing result; Second determination module, for determining whether to set up described business according to described testing result.
Preferably, described detection initiation module comprises: sending module, for sending the message carrying the identification information of described first session to described transmit leg, indicates described transmit leg to detect described first session; Receiver module, for receiving the described testing result that described transmit leg sends after detecting.
Preferably, when described sip server receives the message for setting up call business, described detection initiation module, for inquiring about local resource, when determining that the transmit leg of described message is in another session, initiating User Status and detecting.
According to a further aspect of the invention, additionally provide a kind of sip server, comprise above-mentioned session checkout gear.
By the present invention, have employed session initiation protocol sip server after receiving the message for asking to set up business, determining whether that needing to initiate User Status detects; Described sip server is when User Status detection initiated by needs, and the first session setup existed on described sip server before the transmit leg to described message detects, and obtains testing result; Described sip server determines whether to set up described business according to described testing result.Solve user in prior art and initiate the problem that business likely causes service fail, and then improve Consumer's Experience.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The flow chart that sip server end and the inconsistent situation of end user status produce is there is in Fig. 1 according to prior art;
Fig. 2 is the flow chart of the talk detection method according to the embodiment of the present invention;
Fig. 3 is the structured flowchart of the session checkout gear according to the embodiment of the present invention;
Fig. 4 is the structured flowchart preferably detecting initiation module according to the embodiment of the present invention;
Fig. 5 finds according to the detection user based on SIP of the embodiment of the present invention process chart called out when discharging;
Fig. 6 finds the process chart of call resources also when taking according to the detection user based on SIP of the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Fig. 2 is the flow chart of the talk detection method according to the embodiment of the present invention, and as shown in Figure 2, this flow process comprises the steps:
Step S202, sip server, after receiving the message for asking to set up business, determines whether that needing to initiate User Status detects.
Step S204, sip server is when User Status detection initiated by needs, and the first session setup existed on this sip server before the transmit leg to this message detects, and obtains testing result; It should be noted that at this, " the first session " be herein for convenience and to this session a title rising, the implication that " first " is wherein unactual.
Step S206, sip server determines whether to set up business according to this testing result.
Pass through above-mentioned steps, to propose under the abnormal conditions of network (such as, after dialog sets up, sip server causes information between terminal and server inconsistent because certain is abnormal) resource quick release manner, sip server after receiving the message, the detection to User Status can be initiated, had certain progress compared to the mode of cycle detection of the prior art, can Consumer's Experience have been improved.
Such as, the request of follow-up new initiation can be utilized as a trigger condition, if triggered the result of 486 by this request, then sip server detects for the session setup of preexist, detects successfully, then refuse new calling, detect unsuccessfully, then releasing resource again, calling is continued.
The detection mode of sip server to the session of preexist has a variety of, provide a kind of preferred detection mode in the present embodiment, performing what detect is in this approach the transmit leg of this message, be explained below: sip server sends to the transmit leg of above-mentioned message the message carrying the identification information of the first session, wherein, this message is used to indicate transmit leg and detects the first session; Transmit leg carries out detecting and testing result being sent to sip server after such a message has been received; Thus make sip server obtain testing result.
Be described for the message (or being called request message) setting up call business below: sip server receives the message for setting up call business; Sip server inquiry local resource, when determining that the transmit leg of this message is in another session, initiating User Status and detecting.Now, preferably, sip server can send to transmit leg the message carrying the identification information of the first session; Whether transmit leg detects exists in local first session, and sends to sip server to testing result; Sip server obtains testing result.
Preferably, sip server in the non-existent situation of the first session, can upgrade its local resource information state, discharges the resource corresponding with the first session, and sets up call business; Sip server is deposited in case in the first session, sends be used to indicate just busy message to transmit leg.
Preferably, after sip server receives the message for setting up call business, sip server can send to transmit leg and be used for indicating this sip server attempting setting up the message of call business to transmit leg, repeats to send the message for setting up call business to avoid sending.
In the present embodiment, additionally provide a kind of session checkout gear, this device is used for realizing above-mentioned talk detection method, has carried out not repeating them here of explanation, and has been described below to the module that this device relates to.Fig. 3 is the structured flowchart of the session checkout gear according to the embodiment of the present invention, and as shown in Figure 3, this device comprises: the first determination module 32, detection initiation module 34, second determination module 36, be described this structure below.
First determination module 32, for after receiving the message for asking to set up business, determines whether that needing to initiate User Status detects; Detect initiation module 34 and be connected to the first determination module 32, for initiating User Status detection at needs, the first session setup existed on sip server before the transmit leg to message detects, and obtains testing result; Second determination module 36 is connected to and detects initiation module 34, for determining whether to set up business according to testing result.
Fig. 4 is the structured flowchart preferably detecting initiation module according to the embodiment of the present invention, as shown in Figure 4, detects initiation module 34 and comprises: sending module 342 and receiver module 344, be explained below.
Sending module 342, for sending the message carrying the identification information of the first session to transmit leg, wherein, message is used to indicate transmit leg and detects the first session; Receiver module 344, for receiving the testing result that transmit leg sends after detecting.
Preferably, when sip server receives the message for setting up call business, detecting initiation module 34, for inquiring about local resource, when determining that the transmit leg of message is in another session, initiating User Status and detecting.
Certainly, said apparatus can be arranged in proxy server, can certainly be arranged in other sip server.Be described to be arranged in proxy server below.
Fig. 5 finds according to the detection user based on SIP of the embodiment of the present invention process chart called out when discharging, this Figure illustrates sip server and terminal inconsistent for User Status time, sip server end initiatively initiates state-detection event, resource status is judged by the transmission and subsequent response of talking with interior request, release original state and/or resource information, connect the flow process of new call resource, this flow process also goes for application server or soft switch field.As shown in Figure 5, this flow process comprises the steps:
Step S501, Proxy Server receives the INVITE that terminal request sets up calling, and this INVITE does not have TO TAG, belongs to the outer message of dialogue;
Step S502, Proxy Server replys 100Trying, to avoid the repeating transmission of INVITE;
Step S503, Proxy Server does inquiry to resource and detects, when finding that user is in other dialogue (DIALOG), Proxy Server initiatively initiates User Status and detects, herein in order to versatility and compatibility, the preferred INVITE (Re-INVITE) used in dialogue, DIALOG ID in the DIALOG ID of this Re-INVITE message and step S501 is inconsistent, should be the ID of the other dialogue at user, it should be noted that, message used in this step is Re-INVITE, this is that one illustrates, in other dialogue, message also can be used for detecting session, will not enumerate at this,
Step S504, terminal does corresponding answer according to the dialog information in database after receiving INVITE (dialog1) message, if dialogue is not present in, then replys 481 responses;
Step S505, Proxy Server represents confirmation to 481, replys ACK confirmation;
Step S506,481 responses due to terminal replies, represent that dialogue does not exist, user is in Idle state, and ProxyServer needs to revise resource information state and releasing resource;
Step S507, Proxy Server continues according to terminal wish, sets up calling, sends INVITE to down hop.
The step of above-described embodiment is had to find out, initiatively User Status detection has been initiated to terminal at Proxy Server, thus checked this user resources state, when the resource of terminal preceding dialog releases, Proxy Server discharges the resource to preceding dialog, and to the session that connection user newly initiates.It is to be noted that 481 responses of terminal replies in step 204, this response represent not exist at the preceding dialog of terminal in this checks.
Fig. 6 finds the process chart of call resources also when taking according to the detection user based on SIP of the embodiment of the present invention, this Figure illustrates sip server end and initiate state-detection event, by talking with the transmission of interior request, and subsequent response judges that resource status is consistent, thus refuse the flow process of new call request, as shown in Figure 6, this flow process comprises the steps:
Step S601, Proxy Server receives the INVITE that terminal request sets up calling, and this INVITE does not have TO TAG, belongs to the outer message of dialogue;
Step S602, Proxy Server replys 100Trying, avoids the repeating transmission of INVITE;
Step S603, Proxy Server does inquiry to resource and detects, when finding that user is in dialogue, Proxy Server needs initiatively to initiate User Status and detects, DIALOGID in the DIALOG ID of this Re-INVITE message and step S601 is inconsistent, should be the ID of the dialogue residing for user, it should be noted that, message used in this step is Re-INVITE, this is that one illustrates, in other dialogue, message also can be used for detecting session, will not enumerate at this;
Step S604, terminal does corresponding answer according to the dialog information in database after receiving INVITE (dialog1) message, if dialogue exists, replys 200 responses;
Step S605, Proxy Server represents confirmation to 200, replys ACK confirmation;
Step S606,200 responses due to terminal replies, represent that dialogue exists, user is in busy condition, Proxy Server needs to keep resource information and state, reply 486 for the session request INVITE setting up new calling, it should be noted that at this, herein 486 just illustrate, but be not limited to this, certainly, also can trigger business (such as, divert when busy etc.);
Step S607, terminal replies ACK confirmation.
Have above-described embodiment to find out, when Proxy Server is consistent with the state resource of terminal, Proxy Server, by detecting, continues to remain the resource in this server.
In sum, by the above embodiment of the present invention, not then, user initiates the problem that business likely causes service fail, and then improves Consumer's Experience to solve sense cycle in prior art.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus they storages can be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. a talk detection method, is characterized in that, comprising:
Session initiation protocol sip server, after receiving the message for asking to set up business, determines whether that needing to initiate User Status detects;
Described sip server is when User Status detection initiated by needs, and the first session setup existed on described sip server before the transmit leg to described message detects, and obtains testing result;
Described sip server determines whether to set up described business according to described testing result; Wherein,
Described sip server is receiving under the message scenario for asking to set up call business, and described sip server determines whether that needing to initiate User Status detection comprises:
Described sip server inquiry local resource, when determining that the transmit leg of described message is in another session, initiating User Status and detecting.
2. method according to claim 1, is characterized in that, described sip server detects described first session setup, and obtains testing result and comprise:
Described sip server sends the message carrying the identification information of described first session to described transmit leg, indicate described transmit leg to detect described first session;
Described transmit leg carries out detecting and described testing result is sent to described sip server;
Described sip server obtains described testing result.
3. method according to claim 1, is characterized in that, described sip server detects described first session setup, and obtains testing result and comprise:
Described sip server sends the message carrying the identification information of described first session to described transmit leg;
Whether described transmit leg detects described first session exists, and described testing result is sent to described sip server;
Described sip server obtains described testing result.
4. method according to claim 3, is characterized in that, according to described testing result, described sip server determines whether that setting up described business comprises:
Described sip server, in the non-existent situation of described first session, upgrades its local resource information state, discharges the resource corresponding with described first session, and sets up described call business;
Described sip server is deposited in case in described first session, sends be used to indicate just busy message to described transmit leg.
5. method according to claim 1, is characterized in that, after described sip server receives the message for setting up call business, also comprises:
Described sip server sends to described transmit leg and is used for indicating described sip server attempting setting up the message of described call business to described transmit leg.
6. a session checkout gear, is characterized in that, comprising:
First determination module, for after receiving the message for asking to set up business, determines whether that needing to initiate User Status detects;
Detect initiation module, for initiating User Status detection at needs, the first session setup existed on described sip server before the transmit leg to described message detects, and obtains testing result;
Second determination module, for determining whether to set up described business according to described testing result; Wherein,
When described sip server receives the message for setting up call business, described detection initiation module, for inquiring about local resource, when determining that the transmit leg of described message is in another session, initiating User Status and detecting.
7. device according to claim 6, is characterized in that, described detection initiation module comprises:
Sending module, for sending the message carrying the identification information of described first session to described transmit leg, indicates described transmit leg to detect described first session;
Receiver module, for receiving the described testing result that described transmit leg sends after detecting.
8. a sip server, is characterized in that, comprises the session checkout gear described in claim 6 or 7.
CN201010571295.XA 2010-12-02 2010-12-02 Talk detection method, device and session initial protocol server Active CN102487341B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201010571295.XA CN102487341B (en) 2010-12-02 2010-12-02 Talk detection method, device and session initial protocol server
PCT/CN2011/075940 WO2012071882A1 (en) 2010-12-02 2011-06-20 Session detection method, device and session initiation protocol server

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010571295.XA CN102487341B (en) 2010-12-02 2010-12-02 Talk detection method, device and session initial protocol server

Publications (2)

Publication Number Publication Date
CN102487341A CN102487341A (en) 2012-06-06
CN102487341B true CN102487341B (en) 2015-10-21

Family

ID=46152797

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010571295.XA Active CN102487341B (en) 2010-12-02 2010-12-02 Talk detection method, device and session initial protocol server

Country Status (2)

Country Link
CN (1) CN102487341B (en)
WO (1) WO2012071882A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103179688B (en) * 2013-03-22 2015-11-18 北京久华信信息技术有限公司 The method of wireless communication system resource release is realized based on Session Initiation Protocol
CN104954373B (en) * 2015-06-12 2019-01-18 广东天波信息技术股份有限公司 Unified Communication active SIP method of calling and system
CN111327562B (en) * 2018-12-13 2023-03-24 海能达通信股份有限公司 Session detection method, session system and storage medium
CN114679435B (en) * 2022-05-27 2022-08-30 武汉中科通达高新技术股份有限公司 Session management system, method, computer device and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1822599A (en) * 2005-02-16 2006-08-23 中兴通讯股份有限公司 Detecting method of terminal online state of meeting sponsered protocol server
CN1859361A (en) * 2005-05-08 2006-11-08 中兴通讯股份有限公司 Method for detecting terminal on-line state of meeting sponsored protocol server
CN101309277A (en) * 2008-06-19 2008-11-19 华为技术有限公司 SIP terminal, method and system for uploading state, method and apparatus for processing the uploaded state

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100666946B1 (en) * 2005-01-19 2007-01-10 삼성전자주식회사 Network System for status Test of the Terminal and Test Method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1822599A (en) * 2005-02-16 2006-08-23 中兴通讯股份有限公司 Detecting method of terminal online state of meeting sponsered protocol server
CN1859361A (en) * 2005-05-08 2006-11-08 中兴通讯股份有限公司 Method for detecting terminal on-line state of meeting sponsored protocol server
CN101309277A (en) * 2008-06-19 2008-11-19 华为技术有限公司 SIP terminal, method and system for uploading state, method and apparatus for processing the uploaded state

Also Published As

Publication number Publication date
CN102487341A (en) 2012-06-06
WO2012071882A1 (en) 2012-06-07

Similar Documents

Publication Publication Date Title
EP2055076B1 (en) Mechanism for charging and session handling supporting forking
KR101163258B1 (en) Method and device for session control in hybrid telecommunication networks
US20090113460A1 (en) Systems and methods for providing a generic interface in a communications environment
EP2117220B1 (en) A method and device for blind transfer service
US20100040218A1 (en) Consultative transfer service method and apparatus
EP2100429A2 (en) Dynamic service triggers in communication networks
CN102487341B (en) Talk detection method, device and session initial protocol server
CN101444070B (en) Telecommunications system and method of initiating file transfers from voice endpoints
US20090042538A1 (en) Method for obtaining packet billing information based on session initiation protocol
US9392032B2 (en) Session transfer method, device and system
CN101997850A (en) Call management method and device for IP (Internet Protocol) multimedia subsystem
CN101137104B (en) Method and system for implementing resource release
US7808928B2 (en) Testing user terminal status
CN114979084A (en) Calling method, device and system
CN100479541C (en) POC service group member state informing process and apparatus
CN103618747A (en) Method and system for realizing session initiation protocol (SIP) information service
CN101951381A (en) Digital television receiving terminal and method thereof for realizing multimedia instant messaging
CN102348291A (en) Dialogue establishing method and system based on dialogue correlation identifier
US9344463B2 (en) Method and apparatus for service control
CN109120578B (en) Method and device for realizing link connection processing
US20090296693A1 (en) Session Initiation Protocol Telephone System, Data Transmission Method, Server Unit, and Telephone Terminal
US8346269B2 (en) Mobile network system and guidance message providing method
EP3136756A1 (en) System, device and method for implementing ring back tone service
CN101656991A (en) Method and equipment for switching terminal in message transmitting process
KR101061671B1 (en) Mobile communication terminal equipped with SPI stack and its verification device and method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant