CN108270725B - Switching method and device of SIP terminal - Google Patents
Switching method and device of SIP terminal Download PDFInfo
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- CN108270725B CN108270725B CN201611258836.7A CN201611258836A CN108270725B CN 108270725 B CN108270725 B CN 108270725B CN 201611258836 A CN201611258836 A CN 201611258836A CN 108270725 B CN108270725 B CN 108270725B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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- 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]
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- 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
- H04L65/1096—Supplementary features, e.g. call forwarding or call holding
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- Computer Security & Cryptography (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention discloses a switching method and a switching device of an SIP terminal, which relate to the technical field of UE and SIP, and the method comprises the following steps: the method comprises the steps that during the conversation between an initial calling party terminal and an initial answering party terminal, the initial calling party terminal initiates a transfer request to the initial answering party terminal; the initial answering party terminal releases the communication with the initial calling party terminal according to the forwarding request, and the initial answering party terminal is used as a call replacement terminal and initiates a call to a specified third party terminal in the forwarding request; and after the third party terminal is off-hook, the initial responder terminal communicates with the third party terminal. The invention can develop the switching service only by the support of the terminal technology without building an IMS network, and is very suitable for the low-cost enterprise network environment.
Description
Technical Field
The present invention relates to the technical field of User Equipment (UE) and Session Initiation Protocol (SIP), and in particular, to a method and an apparatus for switching an SIP terminal.
Background
In addition to call waiting and three-party call, call forwarding is also a common VoIP (Voice over Internet Protocol) multiparty service, which is to transfer a call with one party to another party. For example, A originally converses with B and finally becomes converse with B and C, and A quits the conversation.
The conventional transfer service mainly refers to a 3GPP (3rd Generation Partnership Project) protocol, a service flow is based on an IMS (IP Multimedia system) network environment, and is mainly controlled by an SIP server, which has a low requirement on a terminal, but has a high requirement on the SIP server, a complex networking process, and a plurality of network elements are needed to cooperate, so that the service is not suitable for a scenario in which the network cost is more severely controlled, such as a small and medium-sized enterprise network.
The other switching service is completely realized at the terminal side, the service flow has higher requirements on the terminal, three parties participating in switching have certain technical requirements, but the requirements on the SIP server are very low, an IMS network is not required to be built, and only the server can transmit a signaling, so that the networking cost can be greatly reduced, and the method is very suitable for a low-cost enterprise network environment.
Disclosure of Invention
The technical problems solved by the scheme provided by the embodiment of the invention are that the traditional transfer service is based on an IMS network environment, the cost is high and the networking is complex.
The switching method of the SIP terminal provided by the embodiment of the invention comprises the following steps:
the method comprises the steps that during the conversation between an initial calling party terminal and an initial answering party terminal, the initial calling party terminal initiates a transfer request to the initial answering party terminal;
the initial answering party terminal releases the communication with the initial calling party terminal according to the forwarding request, and the initial answering party terminal is used as a call replacement terminal and initiates a call to a specified third party terminal in the forwarding request;
after a third-party terminal is off-hook, the initial responder terminal is communicated with the third-party terminal;
wherein, the SIP refers to a session initiation protocol.
Preferably, the forwarding request includes a blind forwarding request and an inquiry forwarding request.
Preferably, the blind forwarding request includes a third party terminal number for indicating the initial answering party terminal to call forwarding; the inquiry forwarding request comprises a third party terminal number used for indicating the call forwarding of the initial answering party terminal and parameter information of the initial calling party terminal and the third party terminal used for call replacement.
Preferably, the initial answering party terminal releases the call with the initial calling party terminal according to the forwarding request, and initiates a call to a specified third party terminal in the forwarding request as a call replacement terminal, including:
the initial answering party terminal generates a release message for releasing the conversation with the initial calling party terminal according to the blind transfer switching request and sends the release message to the initial calling party terminal;
and after the initial calling party terminal hangs up according to the release message, the initial answering party terminal generates a blind transfer call message for calling and communicating with a third party terminal according to the blind transfer request and sends the blind transfer call message to the third party terminal as a call replacement terminal.
Preferably, the initial answering party terminal releases the call with the initial calling party terminal according to the forwarding request, and initiates a call to a specified third party terminal in the forwarding request as a call replacement terminal, including:
the initial answering party terminal generates a release message for releasing the conversation with the initial calling party terminal according to the inquiry forwarding request and sends the release message to the initial calling party terminal;
after the initial calling party terminal hangs up according to the release message, the initial answering party terminal generates an inquiry call message which contains media switching information of the third party terminal and is used for calling and communicating with the third party terminal according to the inquiry forwarding request, and the inquiry call message is sent to the third party terminal as a call replacement terminal.
Preferably, after the third party terminal goes off-hook, the communication between the initial responder terminal and the third party terminal includes:
and after the third-party terminal picks up the phone according to the blind transfer call message, the initial responder terminal communicates with the third-party terminal.
Preferably, after the third party terminal goes off-hook, the communication between the initial responder terminal and the third party terminal includes:
and after the third party terminal releases the communication with the initial calling party terminal according to the inquiry call message, finishing the call replacement of the initial calling party terminal, so that the initial answering party terminal communicates with the third party terminal.
The switching device of the SIP terminal provided by the embodiment of the invention comprises:
the system comprises an initial calling party terminal, an initial answering party terminal and a forwarding server, wherein the initial calling party terminal is used for initiating a forwarding request to the initial answering party terminal during the conversation with the initial answering party terminal;
and the initial responder terminal is used for releasing the communication with the initial caller terminal according to the forwarding request, serving as a call replacement terminal, initiating a call to a specified third party terminal in the forwarding request, and carrying out communication with the third party terminal after the third party terminal is off-hook.
Preferably, the forwarding request includes a blind forwarding request and an inquiry forwarding request.
Preferably, the blind forwarding request includes a third party terminal number for indicating the initial answering party terminal to call forwarding; the inquiry forwarding request comprises a third party terminal number used for indicating the call forwarding of the initial answering party terminal and parameter information of the initial calling party terminal and the third party terminal used for call replacement.
According to the scheme provided by the embodiment of the invention, the service party A initiates the transfer, the participant C releases the AC call after receiving the transfer message, and simultaneously initiates the call replacement to the participant B, the participant B completes the call replacement and releases the AC call, and finally the BC conversation is realized. The switching service can be carried out only by the support of the terminal technology without building an IMS network, and the method is very suitable for the low-cost enterprise network environment.
Drawings
Fig. 1 is a flowchart of a method for forwarding an SIP terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a switching apparatus of an SIP terminal according to an embodiment of the present invention;
fig. 3 is a schematic blind transition diagram of an SIP terminal according to an embodiment of the present invention;
fig. 4 is a query forwarding diagram of an SIP terminal according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 is a flowchart of a forwarding method of an SIP terminal according to an embodiment of the present invention, as shown in fig. 1, including:
step S101: the method comprises the steps that during the conversation between an initial calling party terminal and an initial answering party terminal, the initial calling party terminal initiates a transfer request to the initial answering party terminal;
step S102: the initial answering party terminal releases the communication with the initial calling party terminal according to the forwarding request, and the initial answering party terminal is used as a call replacement terminal and initiates a call to a specified third party terminal in the forwarding request;
step S103: and after the third party terminal is off-hook, the initial responder terminal communicates with the third party terminal.
Wherein the forwarding request comprises a blind forwarding request and an inquiry forwarding request. Specifically, the blind forwarding request includes a third party terminal number for indicating the initial answering party terminal to call forwarding; the inquiry forwarding request comprises a third party terminal number used for indicating the call forwarding of the initial answering party terminal and parameter information of the initial calling party terminal and the third party terminal used for call replacement.
The initial answering party terminal releases the communication with the initial calling party terminal according to the forwarding request, and the initial answering party terminal is used as a call replacement terminal, and the step of initiating a call to a specified third party terminal in the forwarding request comprises the following steps: the initial answering party terminal generates a release message for releasing the conversation with the initial calling party terminal according to the blind transfer switching request and sends the release message to the initial calling party terminal; and after the initial calling party terminal hangs up according to the release message, the initial answering party terminal generates a blind transfer call message for calling and communicating with a third party terminal according to the blind transfer request and sends the blind transfer call message to the third party terminal as a call replacement terminal.
The initial answering party terminal releases the communication with the initial calling party terminal according to the forwarding request, and the initial answering party terminal is used as a call replacement terminal, and the step of initiating a call to a specified third party terminal in the forwarding request comprises the following steps: the initial responder terminal generates a release message for releasing the conversation with the initial caller terminal according to the inquiry switching request and sends the release message to the initial caller terminal; after the initial calling party terminal hangs up according to the release message, the initial answering party terminal generates an inquiry call message which contains media switching information of the third party terminal and is used for calling and communicating with the third party terminal according to the inquiry switching request, and the inquiry call message is used as a call replacement terminal to send the inquiry call message to the third party terminal.
After the third-party terminal is off-hook, the communication between the initial responder terminal and the third-party terminal comprises the following steps: and after the third-party terminal picks up the phone according to the blind transfer call message, the initial responder terminal communicates with the third-party terminal.
After the third-party terminal is off-hook, the communication between the initial responder terminal and the third-party terminal comprises the following steps: and after the third party terminal releases the communication with the initial calling party terminal according to the inquiry call message, finishing the call replacement of the initial calling party terminal, so that the initial answering party terminal communicates with the third party terminal.
Fig. 2 is a schematic diagram of a forwarding device of an SIP terminal according to an embodiment of the present invention, including: an initial caller terminal 201, configured to initiate a forwarding request to an initial responder terminal during a call with the initial responder terminal; and the initial responder terminal 202 is configured to release the call with the initial caller terminal according to the forwarding request, serve as a call replacement terminal, initiate a call to a specified third party terminal in the forwarding request, and perform a call with the third party terminal after the third party terminal is off-hook.
Wherein the forwarding request comprises a blind forwarding request and an inquiry forwarding request. Specifically, the blind forwarding request includes a third party terminal number for indicating the initial answering party terminal to call forwarding; the inquiry forwarding request comprises a third party terminal number used for indicating the call forwarding of the initial answering party terminal and parameter information of the initial calling party terminal and the third party terminal used for call replacement.
Fig. 3 is a schematic diagram of blind transition of an SIP terminal according to an embodiment of the present invention, as shown in fig. 3, relating to SIP signaling: INVITE, REFER. The INVITE message has many functions, and can be used for creating a SIP session, modifying session media, and if carrying a Replaces header, also can be used for call replacement. The REFER message is used to indicate information for call forwarding, and is used when a service party initiates call forwarding. The method specifically comprises the following steps:
a talks with B, A holds B.
2. In an AB call, a sends a REFER message To B, where URI in the REFER-To header is the number of C, requesting that the call of a and B be forwarded To C.
And 3, B receives the REFER message, knows that A needs to quit the call when the call is forwarded, and then sends a BYE message to A to release the AB call.
4. Since the URI in the Refer-To header is the number of C, i.e. the call is To be forwarded To C, then B issues an INVITE message To C, creates a BC call, and C rings and replies 180 a response.
C off-hook replies 200OK message, B and C talk.
Fig. 4 is a query forwarding diagram of an SIP terminal according to an embodiment of the present invention, as shown in fig. 4, relating to SIP signaling: INVITE, REFER. The INVITE message has many functions, and can be used for creating a SIP session, modifying session media, and if carrying a Replaces header, also can be used for call replacement. The REFER message is used to indicate information for call forwarding, and is used when a service party initiates call forwarding. The method specifically comprises the following steps:
a talks with B, A holds B.
A talks with C, A holds C.
A sends a REFER message To B, where the destination URI in the REFER-To header is the number of user C (containing the replays parameter, replays ═ AC), requesting that the call of a and B be forwarded To C.
And 4, after receiving the REFER message, B matches the AB session and sends a BYE message to A to release the AB session.
B sends an INVITE message (containing the replays parameter, replays ═ AC) to user C according to the content in the REFER message.
C receives INVITE message containing Replaces parameter, replies 200OK message, and sends BYE message to A according to the contents of Replaces parameter to release AC conversation, finish the call replacement.
And 7, B and C talk.
According to the scheme provided by the embodiment of the invention, the call forwarding service of the SIP terminal can realize the switching from the A-B conversation to the B-C conversation, the terminal is required to support the call forwarding technology and the call replacement technology at the same time, and the traditional forwarding service only needs to support the call forwarding technology.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (10)
1.A switching method of an SIP terminal comprises the following steps:
during the conversation between an initial calling party terminal and an initial answering party terminal, the initial calling party terminal initiates a forwarding request for indicating call forwarding to the initial answering party terminal;
the initial answering party terminal releases the communication with the initial calling party terminal according to the forwarding request for indicating the call forwarding, and the initial answering party terminal is used as a call replacement terminal to initiate a call to a specified third party terminal in the forwarding request;
after a third-party terminal is off-hook, the initial responder terminal is communicated with the third-party terminal;
the initial calling party terminal, the initial answering party terminal and the third party terminal are all terminals which simultaneously support a call forwarding technology and a call replacement technology; the SIP refers to a session initiation protocol.
2. The method of claim 1, the diversion request comprising a blind diversion request and an inquiry diversion request.
3. The method of claim 2, the blind transfer request including therein a third party terminal number for indicating the initial answering party terminal call transfer; the inquiry forwarding request comprises a third party terminal number used for indicating the call forwarding of the initial answering party terminal and parameter information of the initial calling party terminal and the third party terminal used for replacing the call.
4. The method of claim 3, wherein the initial responder terminal releases the call with the initial caller terminal according to the forwarding request, and initiates a call to a specified third party terminal in the forwarding request as a call replacement terminal, comprising:
the initial answering party terminal generates a release message for releasing the conversation with the initial calling party terminal according to the blind transfer switching request and sends the release message to the initial calling party terminal;
and after the initial calling party terminal hangs up according to the release message, the initial answering party terminal generates a blind transfer call message for calling and communicating with a third party terminal according to the blind transfer request and sends the blind transfer call message to the third party terminal as a call replacement terminal.
5. The method of claim 3, wherein the initial responder terminal releases the call with the initial caller terminal according to the forwarding request, and initiates a call to a specified third party terminal in the forwarding request as a call replacement terminal, comprising:
the initial answering party terminal generates a release message for releasing the conversation with the initial calling party terminal according to the inquiry forwarding request and sends the release message to the initial calling party terminal;
after the initial calling party terminal hangs up according to the release message, the initial answering party terminal generates an inquiry call message which contains media switching information of the third party terminal and is used for calling and communicating with the third party terminal according to the inquiry forwarding request, and the inquiry call message is used as a call replacement terminal to send the inquiry call message to the third party terminal.
6. The method of claim 4, wherein the initial responder terminal and the third party terminal communicating after the third party terminal goes off-hook comprises:
and after the third-party terminal picks up the phone according to the blind transfer call message, the initial responder terminal communicates with the third-party terminal.
7. The method of claim 5, wherein the initial responder terminal talking to the third party terminal after the third party terminal goes off-hook comprises:
and after the third party terminal releases the communication with the initial calling party terminal according to the inquiry call message, finishing the call replacement of the initial calling party terminal, so that the initial answering party terminal communicates with the third party terminal.
8. A switching device of a SIP terminal comprises:
the system comprises an initial calling party terminal, a first answering party terminal and a second answering party terminal, wherein the initial calling party terminal is used for initiating a forwarding request for indicating call forwarding to the initial answering party terminal during the conversation with the initial answering party terminal;
the initial answering party terminal is used for releasing the communication with the initial calling party terminal according to the forwarding request for indicating the call forwarding, and the initial answering party terminal is used as a call replacement terminal to initiate a call to a specified third party terminal in the forwarding request, and the initial answering party terminal communicates with the third party terminal after the third party terminal is off-hook;
the initial calling party terminal, the initial answering party terminal and the third party terminal are all terminals which simultaneously support a call forwarding technology and a call replacement technology; the SIP refers to a session initiation protocol.
9. The apparatus of claim 8, the transit requests comprising blind transit requests and inquiry transit requests.
10. The apparatus of claim 9, the blind transfer request including therein a third party terminal number for indicating the initial answering party terminal call transfer; the inquiry forwarding request comprises a third party terminal number used for indicating the call forwarding of the initial answering party terminal and parameter information of the initial calling party terminal and the third party terminal used for replacing the call.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611258836.7A CN108270725B (en) | 2016-12-30 | 2016-12-30 | Switching method and device of SIP terminal |
| PCT/CN2017/118935 WO2018121590A1 (en) | 2016-12-30 | 2017-12-27 | Call forwarding method and system of sip terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611258836.7A CN108270725B (en) | 2016-12-30 | 2016-12-30 | Switching method and device of SIP terminal |
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| CN108270725A CN108270725A (en) | 2018-07-10 |
| CN108270725B true CN108270725B (en) | 2021-10-01 |
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| CN201611258836.7A Active CN108270725B (en) | 2016-12-30 | 2016-12-30 | Switching method and device of SIP terminal |
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| CN (1) | CN108270725B (en) |
| WO (1) | WO2018121590A1 (en) |
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| US8774178B2 (en) * | 2007-07-30 | 2014-07-08 | Alcatel Lucent | Call transfer with multiple application servers in session initiation protocol-based network |
| CN101594368B (en) * | 2009-06-15 | 2013-06-05 | 中兴通讯股份有限公司 | Inquiry transferring method used for VPN |
| CN102137198B (en) * | 2011-03-22 | 2015-01-21 | 华为技术有限公司 | Method for realizing private branch exchange service and gateway equipment |
| CN102724214B (en) * | 2012-07-04 | 2015-04-29 | 上海华东电脑股份有限公司 | Calling device and method and device for establishing conversation based on instant messaging (IM) client-side |
| CN104506523B (en) * | 2014-12-22 | 2018-05-04 | 迈普通信技术股份有限公司 | A kind of call forwarding method of intelligent terminal VoIP |
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2016
- 2016-12-30 CN CN201611258836.7A patent/CN108270725B/en active Active
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- 2017-12-27 WO PCT/CN2017/118935 patent/WO2018121590A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080175229A1 (en) * | 2007-01-19 | 2008-07-24 | Joo-Hong Lee | System for blind/attended transfer in session initiation protocol (SIP)-based network and method of controlling the transfer |
| CN101197888A (en) * | 2008-01-04 | 2008-06-11 | 中兴通讯股份有限公司 | Method and system for implementing hang-up selection when non-intelligent SIP terminal call waiting |
| CN101227527A (en) * | 2008-02-02 | 2008-07-23 | 中兴通讯股份有限公司 | System and method for initiating blind transfer call switching business |
| CN101534312A (en) * | 2009-04-29 | 2009-09-16 | 迈普通信技术股份有限公司 | A click dialing proxy call method based on initial session protocol |
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| CN108270725A (en) | 2018-07-10 |
| WO2018121590A1 (en) | 2018-07-05 |
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