CN102523233A - Paging method based on session initiation protocol (SIP) and system thereof - Google Patents
Paging method based on session initiation protocol (SIP) and system thereof Download PDFInfo
- Publication number
- CN102523233A CN102523233A CN2011104489278A CN201110448927A CN102523233A CN 102523233 A CN102523233 A CN 102523233A CN 2011104489278 A CN2011104489278 A CN 2011104489278A CN 201110448927 A CN201110448927 A CN 201110448927A CN 102523233 A CN102523233 A CN 102523233A
- Authority
- CN
- China
- Prior art keywords
- paging
- server
- request message
- called
- multicast address
- 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.)
- Granted
Links
Images
Landscapes
- Telephonic Communication Services (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a paging method based on a session initiation protocol (SIP) and a system thereof. The method comprises the following steps that: a calling telephone sends a calling request message to a soft switch server; the calling request message comprises a called paging group number; the soft switch server routes the calling request message to a paging server; after receiving the calling request message, the paging server automatically answers the calling; the calling telephone establishes streaming media connection with the paging server and sends a voice media stream data packet to the paging server; the paging server forwards the received voice media stream data packet to a multicast address of a called paging group; the telephone, which monitors at the multicast address of the called paging group, plays voice of the voice media stream data packet. According to the embodiments of the invention, all types of the telephones can initiate paging to an IP telephone. Management is easy to be achieved and versatility can be possessed.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of paging method and system based on SIP (Session Initiation Protocol).
Background technology
Paging (Paging) extensive use in the wire communication field; A lot of SPC digital switches are all supported this function; Its application scenarios is that pre-configured some terminals get into paging groups on switch, and gives paging group number of paging group (for example 6000), and the characteristics at these terminals are can automatic-answering back device to calling; In most cases these terminals itself are the loud speakers of an automatic-answering back device, are deployed in the different floors of building and chummery not.For example, in the inside, building, all corridors and the room in the 4th buildings have all been installed and have been raised one's voice the terminal and be configured in paging group 4000 the insides, the 6th buildings all be configured in 6000 the insides.When the user need look for man-hour in the 4th buildings, this user can directly dial 4000 with base, and all open at the terminal of raising one's voice that at this moment the 4th buildings are all, and beginning is looked for people's voice, for example " Zhang San, there is express delivery on the foreground " etc. at four building broadcasting users.And other floors can not heard.
Cable communicating technology enters into the soft switch stage at present; A large amount of powerful IP phones have appearred on the market; These phones itself are supported in and utilize multicasting technology to carry out the paging between the IP phone on the Ethernet, for example the serial IP phone of Yealink, Aastra brand.Its concrete implementation does, the IP phone that adds paging group is gone up at the IP multicast address (for example 224.1.1.1:10000) of appointment and monitored, when multicast packets sends to this multicast address, and automatic-answering back device and play the sound of multicast packets.Therefore, initiate the IP phone of paging, just can realize all IP phones of at this point monitoring on the location are carried out multicast as long as send ip voice (being generally the RTP form) to the multicast address of appointment.
There is following shortcoming in such scheme: in the soft switch field; Must initiate paging by the IP phone; Because have only the IP phone to possess the function of directly sending multicast packets to IP multicast address, and conventional analogue phone, digital telephone, cellphone subscriber etc. can't be initiated paging to the IP phone.
In addition, in such scheme, the management of paging lack of uniform is used inconvenient.For example in a certain enterprise, 1000 IP phones are arranged, every phone can belong to several different paging groups, and each paging group has the number of oneself.Do not having under the situation of unified management, the user must dispose the paging group under every IP phone seriatim; When paging group was revised number, the user also must make amendment to the configuration of every IP phone seriatim, wastes time and energy and easy error.
Summary of the invention
The embodiment of the invention proposes a kind of paging method and system based on SIP, realizes that all types of phones can both initiate paging to the IP phone, and is convenient to management, has versatility.
The embodiment of the invention provides a kind of paging method based on SIP, comprising:
S1, main dialing telephone send call request message to soft switching server; Said call request message comprises the called paging group number;
After S2, soft switching server are received said call request message, said call request message is routed to paging server;
After S3, paging server were received said call request message, automatic-answering back device was called out; And said paging server obtains the multicast address of called paging group also according to the called paging group number search index table in the said call request message;
S4, main dialing telephone are set up Streaming Media with said paging server and are connected, and send the voice medium stream packets to said paging server;
S5, paging server are forwarded to the multicast address of said called paging group with the voice medium stream packets of receiving;
S6, the phone of on the multicast address of said called paging group, monitoring are play the voice of said voice medium stream packets.
Further, said concordance list is arranged on the said paging server; Said concordance list comprises the configuration information of the multicast address of each paging group number and correspondence thereof; Each phone is downloaded concordance list from said paging server when initialization, obtain the configuration information of the multicast address of each paging group number and correspondence thereof.
Correspondingly, the embodiment of the invention also provides a kind of paging system based on SIP, comprises main dialing telephone, soft switching server, paging server and the phone of on the multicast address of called paging group, monitoring;
Said main dialing telephone comprises:
The call request unit is used for sending call request message to soft switching server; Said call request message comprises the called paging group number;
The Media Stream transmitting element, the Streaming Media that is used to set up between main dialing telephone and the paging server connects, and sends the voice medium stream packets to said paging server;
Said soft switching server comprises:
Call out routing unit, be used to receive the call request message that said main dialing telephone sends, and said call request message is routed to paging server;
Said paging server comprises;
The call answering unit is used for after receiving said call request message, and automatic-answering back device is called out;
The address lookup unit is used for the called paging group number search index table according to said call request message, obtains the multicast address of called paging group;
The Media Stream retransmission unit is used for the voice medium stream packets of receiving is forwarded to the multicast address of said called paging group;
The phone of on the multicast address of called paging group, monitoring is used to play the voice of said voice medium stream packets.
Further, said paging server also comprises:
The index table stores unit is used to preserve concordance list; Said concordance list comprises the configuration information of the multicast address of each paging group number and correspondence thereof;
Each phone is downloaded concordance list from said paging server when initialization, obtain the configuration information of the multicast address of each paging group number and correspondence thereof.
Paging method and system that the embodiment of the invention provides based on SIP; Through introducing the paging server of a special use; To the paging automatic answer-back, and the Media Stream that main dialing telephone sends is forwarded on the multicast address of appointment, can cooperates the soft switching server of any brand to use; The paging function that realization is all supported any type phone in the soft switch field is the universal solution that paging is realized in a kind of soft switch field.And, utilize the function of the automatic download configuration file of phone, the configuration file of paging group is deposited on the paging server, unified management, thus realized revising the simplification of paging layoutprocedure.
Description of drawings
Fig. 1 is the structural representation based on the paging system of SIP that the embodiment of the invention one provides;
Fig. 2 is the schematic flow sheet based on the paging method of SIP that the embodiment of the invention two provides;
Fig. 3 is the schematic flow sheet based on the paging method of SIP that the embodiment of the invention three provides;
Fig. 4 is the schematic flow sheet based on the paging method of SIP that the embodiment of the invention four provides;
Fig. 5 is the structural representation of the main dialing telephone that provides of the embodiment of the invention five;
Fig. 6 is the structural representation of the soft switching server that provides of the embodiment of the invention six;
Fig. 7 is the structural representation of the paging server that provides of the embodiment of the invention seven.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Referring to Fig. 1, be the structural representation that the embodiment of the invention one provides based on the paging system of SIP.
The paging system based on SIP that present embodiment provides comprises soft switching server, paging server and Duo Tai phone.Dotted arrow shown in Figure 1 is represented signaling flow, solid arrow presentation medium stream.Phone, soft switching server and IP network are the basic environment that soft switch is communicated by letter, and paging server is the equipment that the present invention increases newly.
On paging server, disposed the index of paging group number to multicast address, constitute concordance list.This concordance list comprises the configuration information of the multicast address of each paging group number and correspondence thereof, and is for example as shown in Figure 1, supposes that phone 1001 is configured in paging group 1000, and phone 2001, phone 2002 and phone 2003 are configured in paging group 2000.Configuration paging group number 1000 corresponding address of paging 224.1.1.3:10000 in concordance list, configuration paging group number 2000 corresponding address of paging 224.1.1.2:10000.
On soft switching server, the paging group number is configured to the ordinary terminal user, for example with paging group number 1000,2000 as common extension subscriber.Paging server is used these extension subscriber numbers of the account and is registered on the soft switching server, and soft switching server will be routed to paging server with the calling of getting on this number like this.
In realization of the present invention; Utilized the function of the automatic download configuration of phone; Above-mentioned concordance list (being the configuration information of paging group) is deposited on the paging server; Each phone is downloaded concordance list from said paging server when initialization (for example restarting), obtain the configuration information of the multicast address of each paging group number and correspondence thereof.Therefore, after configuration information is revised (for example newly-increased paging group, change paging group number etc.), only need restart phone to get final product, not need the manual configuration of revising phone one by one.
Referring to Fig. 2, be the schematic flow sheet that the embodiment of the invention two provides based on the paging method of SIP.
The paging method based on SIP that present embodiment provides may further comprise the steps:
S1, main dialing telephone send call request message to soft switching server; Said call request message comprises the called paging group number;
After S2, soft switching server are received said call request message, said call request message is routed to paging server;
After S3, paging server were received said call request message, automatic-answering back device was called out; And said paging server obtains the multicast address of called paging group also according to the called paging group number search index table in the said call request message;
S4, main dialing telephone are set up Streaming Media with said paging server and are connected, and send the voice medium stream packets to said paging server;
S5, paging server are forwarded to the multicast address of said called paging group with the voice medium stream packets of receiving;
S6, the phone of on the multicast address of said called paging group, monitoring are play the voice of said voice medium stream packets.
Wherein, said concordance list is arranged on the said paging server; Said concordance list comprises the configuration information of the multicast address of each paging group number and correspondence thereof; Each phone is downloaded concordance list from said paging server when initialization, obtain the configuration information of the multicast address of each paging group number and correspondence thereof.
Referring to Fig. 3, be the schematic flow sheet that the embodiment of the invention three provides based on the paging method of SIP.
Further, after the step S6 of the foregoing description two, also comprise:
S7, main dialing telephone paging finish, and send the request message of taking out stitches to said soft switching server;
After S8, soft switching server are received the said request message of taking out stitches, the said request message of taking out stitches is routed to paging server;
After S9, paging server are received the said request message of taking out stitches, stop to send the voice medium stream packets to the multicast address of said called paging group, paging finishes.
In an optional execution mode, preserve prompt tone on the paging server to main dialing telephone; After said paging server and said main dialing telephone are set up Streaming Media and are connected, the prompt tone of playing to said main dialing telephone.
In another optional execution mode, preserve prompt tone on the paging server to paging group; After said paging server and said main dialing telephone are set up Streaming Media and be connected, put prompt tone to the called paging multicast.
Paging method based on SIP provided by the invention; Through introducing the paging server of a special use; To the paging automatic answer-back; And the Media Stream that main dialing telephone sends is forwarded on the multicast address of appointment, can cooperate the soft switching server of any brand to use, realize the paging function that any type phone is all supported in the soft switch field.Be main dialing telephone with phone shown in Figure 1 1001 only below, paging group 2000 is described in detail the paging flow process for the called paging group is an example.
Referring to Fig. 4, be the schematic flow sheet that the embodiment of the invention four provides based on the paging method of SIP.
S41, main dialing telephone 1001 (call initiator) sends call request message to soft switching server; This call request message comprises called paging group number 2000.
After S42, soft switching server receive said call request message,, this call request message is routed to paging server according to configuration.
S43, after paging server was received call request message, automatic-answering back device should be called out, and returned call message to soft switching server.
S44, soft switching server is given main dialing telephone 1001 with the call forwards.
S45 sets up Media Stream and connects between main dialing telephone 1001 and the paging server, main dialing telephone 1001 begins to send one-way voice media stream data bag to paging server;
Optional, said voice medium stream packets is RTP (Real-time Transport Protocol, a real time transport protocol bag.
S45, paging server unconditionally are forwarded to the Media Stream of being received the multicast address of paging group number 2000 correspondences, i.e. 224.1.1.2:10000 automatically.
S46, the phone of on multicast address 224.1.1.2:10000, monitoring in the paging group begins the real-time voice of playing and calling phone 1001 automatically.Be phone 2001, phone 2002 and phone 2003 automatic-answering back devices and the voice of playing multicast packets.
S47, main dialing telephone 1001 pagings finish, and on-hook is sent the request message of taking out stitches to soft switching server.
After S48, soft switching server receive the request message of taking out stitches, this request message of taking out stitches is routed to paging server.
After S49, paging server receive the said request message of taking out stitches, stop to send the voice medium stream packets, and return the response message of taking out stitches to soft switching server to multicast address 224.1.1.2:10000.
S50, soft switching server returns the response message of taking out stitches to main dialing telephone 1001, end of calling.
During practical implementation, paging server is that software realizes that its core is in above-mentioned steps S45, and the Media Stream of receiving (for the RTP bag) is forwarded on the multicast address of appointment.Realize that in inside paging server is called out for each paging and created two Socket (socket), comprises Socket1 and Socket2.Wherein, Socket1 is used to receive the RTP bag from caller, and Socket2 is used for transmitting the RTP bag to the multicast address of appointment.Behind step S45 paging call setup, paging server can directly be forwarded to all RTP bags of receiving on the Socket1 on the Socket2, realizes transmitting to multicast address in real time of Media Stream.
The embodiment of the invention is through introducing the paging server of a special use; To the paging automatic answer-back; And the Media Stream that main dialing telephone is sent is forwarded on the multicast address of appointment; It is the IP phone that main dialing telephone 1001 can not limit, and can use conventional analogue phone, digital telephone and mobile phone etc.And, communicate by letter with the SIP signaling between soft switching server and the paging server in the native system, neither be necessary, can also consider to use other signaling methods.The present invention only needs that multicast can reach between the phone set terminal of paging server and paging group when disposing, need not consider the direct multicast reachability relation of caller and paging group.
In addition, the user can also realize the sound prompt function to caller and paging object.The user can preserve the prompt tone to each paging group on paging server, for example the prompt tone of paging group 2000 is " you are to research and development centre's broadcasting ".When main dialing telephone 1001 was dialed paging group 2000, paging server can be put this section prompt tone to 1001 tins of main dialing telephones earlier, begins real paging voice broadcast service afterwards again.
Simultaneously; Paging server can also increase the voice suggestion to paging group; For example record one section prompt tone and " note that it is broadcasting now ", behind the paging call setup to research and development centre for paging group 2000; Paging server can be put this section prompt tone to paging group 2000 earlier, and then the beginning voice broadcast service.
Certainly, the prompt tone of above-mentioned caller and called (paging group) can exist simultaneously, plays simultaneously.
Correspondingly, the embodiment of the invention also provides a kind of paging system based on SIP, can realize the paging flow process of above-mentioned paging method based on SIP.
The paging system based on SIP that the embodiment of the invention provides comprises main dialing telephone, soft switching server, paging server and the phone of on the multicast address of called paging group, monitoring, and is specific as follows:
As shown in Figure 5, main dialing telephone specifically comprises:
Call request unit 51 is used for sending call request message to soft switching server; Said call request message comprises the called paging group number;
Media Stream transmitting element 52, the Streaming Media that is used to set up between main dialing telephone and the paging server connects, and sends the voice medium stream packets to said paging server.
As shown in Figure 6, soft switching server specifically comprises:
Call out routing unit 61, be used to receive the call request message that said main dialing telephone sends, and said call request message is routed to paging server.
As shown in Figure 7, the paging service implement body comprises;
Call answering unit 71 is used for after receiving said call request message, and automatic-answering back device is called out;
Media Stream retransmission unit 73 is used for the voice medium stream packets of receiving is forwarded to the multicast address of said called paging group.
The phone of on the multicast address of called paging group, monitoring is used to play the voice of said voice medium stream packets.
Further, as shown in Figure 5, main dialing telephone also comprises:
The request unit 53 of taking out stitches is used for when paging finishes, and sends the request message of taking out stitches to said soft switching server.
As shown in Figure 6, soft switching server also comprises:
The routing unit 62 of taking out stitches is used to receive the request message of taking out stitches that said main dialing telephone sends, and the said request message of taking out stitches is routed to paging server.
After paging server is received the said request message of taking out stitches, stop to send the voice medium stream packets to the multicast address of called paging group, paging finishes.
In addition, as shown in Figure 7, paging server also comprises:
Index table stores unit 74 is used to preserve concordance list; Said concordance list comprises the configuration information of the multicast address of each paging group number and correspondence thereof; Each phone is downloaded concordance list from said paging server when initialization, obtain the configuration information of the multicast address of each paging group number and correspondence thereof;
The first prompt tone memory cell 75 is used for the prompt tone to main dialing telephone; After said paging server and said main dialing telephone are set up Streaming Media and are connected, the prompt tone of playing to said main dialing telephone;
The second prompt tone memory cell 76 is used to preserve the prompt tone to paging group; After said paging server and said main dialing telephone are set up Streaming Media and be connected, put prompt tone to the called paging multicast.
Paging method and system based on SIP that the embodiment of the invention provides have following beneficial effect:
(1), the embodiment of the invention is through introducing the paging server of a special use; To the paging automatic answer-back; And the Media Stream that main dialing telephone is sent is forwarded on the multicast address of appointment; Can cooperate the soft switching server of any brand to use, the paging function that realization is all supported any type phone in the soft switch field is the universal solution that paging is realized in a kind of soft switch field;
(2), the embodiment of the invention is utilized the function of the automatic download configuration file of phone; The configuration file of paging group is deposited on the paging server, and unified management is after configuration information is revised; Only need restart phone and get final product, thereby realize the simplification of modification paging layoutprocedure;
(3), the embodiment of the invention can also realize the sound prompt function to caller and paging object.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also are regarded as protection scope of the present invention.
Claims (10)
1. the paging method based on SIP is characterized in that, comprising:
S1, main dialing telephone send call request message to soft switching server; Said call request message comprises the called paging group number;
After S2, soft switching server are received said call request message, said call request message is routed to paging server;
After S3, paging server were received said call request message, automatic-answering back device was called out; And said paging server obtains the multicast address of called paging group also according to the called paging group number search index table in the said call request message;
S4, main dialing telephone are set up Streaming Media with said paging server and are connected, and send the voice medium stream packets to said paging server;
S5, paging server are forwarded to the multicast address of said called paging group with the voice medium stream packets of receiving;
S6, the phone of on the multicast address of said called paging group, monitoring are play the voice of said voice medium stream packets.
2. the paging method based on SIP as claimed in claim 1 is characterized in that, after step S6, also comprises:
S7, main dialing telephone paging finish, and send the request message of taking out stitches to said soft switching server;
After S8, soft switching server are received the said request message of taking out stitches, the said request message of taking out stitches is routed to paging server;
After S9, paging server are received the said request message of taking out stitches, stop to send the voice medium stream packets to the multicast address of said called paging group, paging finishes.
3. according to claim 1 or claim 2 the paging method based on SIP is characterized in that said concordance list is arranged on the said paging server; Said concordance list comprises the configuration information of the multicast address of each paging group number and correspondence thereof;
Each phone is downloaded concordance list from said paging server when initialization, obtain the configuration information of the multicast address of each paging group number and correspondence thereof.
4. the paging method based on SIP as claimed in claim 3 is characterized in that, preserves the prompt tone to main dialing telephone on the said paging server;
After said paging server and said main dialing telephone are set up Streaming Media and are connected, the prompt tone of playing to said main dialing telephone.
5. the paging method based on SIP as claimed in claim 3 is characterized in that, preserves the prompt tone to paging group on the said paging server;
After said paging server and said main dialing telephone are set up Streaming Media and be connected, put prompt tone to the called paging multicast.
6. the paging system based on SIP is characterized in that, comprises main dialing telephone, soft switching server, paging server and the phone of on the multicast address of called paging group, monitoring;
Said main dialing telephone comprises:
The call request unit is used for sending call request message to soft switching server; Said call request message comprises the called paging group number;
The Media Stream transmitting element, the Streaming Media that is used to set up between main dialing telephone and the paging server connects, and sends the voice medium stream packets to said paging server;
Said soft switching server comprises:
Call out routing unit, be used to receive the call request message that said main dialing telephone sends, and said call request message is routed to paging server;
Said paging server comprises;
The call answering unit is used for after receiving said call request message, and automatic-answering back device is called out;
The address lookup unit is used for the called paging group number search index table according to said call request message, obtains the multicast address of called paging group;
The Media Stream retransmission unit is used for the voice medium stream packets of receiving is forwarded to the multicast address of said called paging group;
The phone of on the multicast address of called paging group, monitoring is used to play the voice of said voice medium stream packets.
7. the paging system based on SIP as claimed in claim 6 is characterized in that, said main dialing telephone also comprises:
The request unit of taking out stitches is used for when paging finishes, and sends the request message of taking out stitches to said soft switching server;
Said soft switching server also comprises:
The routing unit of taking out stitches is used to receive the request message of taking out stitches that said main dialing telephone sends, and the said request message of taking out stitches is routed to paging server;
After said paging server is received the said request message of taking out stitches, stop to send the voice medium stream packets to the multicast address of said called paging group, paging finishes.
8. like claim 6 or 7 described paging systems, it is characterized in that said paging server also comprises based on SIP:
The index table stores unit is used to preserve concordance list; Said concordance list comprises the configuration information of the multicast address of each paging group number and correspondence thereof;
Each phone is downloaded concordance list from said paging server when initialization, obtain the configuration information of the multicast address of each paging group number and correspondence thereof.
9. the paging system based on SIP as claimed in claim 8 is characterized in that, said paging server also comprises:
The first prompt tone memory cell is used for the prompt tone to main dialing telephone;
After said paging server and said main dialing telephone are set up Streaming Media and are connected, the prompt tone of playing to said main dialing telephone.
10. the paging system based on SIP as claimed in claim 8 is characterized in that, said paging server also comprises:
The second prompt tone memory cell is used to preserve the prompt tone to paging group;
After said paging server and said main dialing telephone are set up Streaming Media and be connected, put prompt tone to the called paging multicast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110448927.8A CN102523233B (en) | 2011-12-29 | 2011-12-29 | Paging method based on session initiation protocol (SIP) and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110448927.8A CN102523233B (en) | 2011-12-29 | 2011-12-29 | Paging method based on session initiation protocol (SIP) and system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102523233A true CN102523233A (en) | 2012-06-27 |
| CN102523233B CN102523233B (en) | 2015-04-08 |
Family
ID=46294025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110448927.8A Active CN102523233B (en) | 2011-12-29 | 2011-12-29 | Paging method based on session initiation protocol (SIP) and system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102523233B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105577844A (en) * | 2014-11-06 | 2016-05-11 | 普天信息技术有限公司 | Method for generating multicast user plane address, core network device and terminal |
| CN112217789A (en) * | 2020-09-01 | 2021-01-12 | 深圳方位通讯科技有限公司 | Method and system for converting SIP call into multicast transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222025A (en) * | 1998-12-11 | 1999-07-07 | 中国人民解放军信息工程学院 | advanced intelligent public telephone system |
| CN1285121A (en) * | 1997-11-04 | 2001-02-21 | 艾利森公司 | Method for auto answering call based on caller ID |
| CN1385049A (en) * | 1999-10-28 | 2002-12-11 | 艾利森公司 | Communications system providing call type indication for group calls |
| US20020198007A1 (en) * | 2001-06-25 | 2002-12-26 | Philips Electronics North America Corporation | Method and system for processing incoming calls on a communication unit |
-
2011
- 2011-12-29 CN CN201110448927.8A patent/CN102523233B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285121A (en) * | 1997-11-04 | 2001-02-21 | 艾利森公司 | Method for auto answering call based on caller ID |
| CN1222025A (en) * | 1998-12-11 | 1999-07-07 | 中国人民解放军信息工程学院 | advanced intelligent public telephone system |
| CN1385049A (en) * | 1999-10-28 | 2002-12-11 | 艾利森公司 | Communications system providing call type indication for group calls |
| US20020198007A1 (en) * | 2001-06-25 | 2002-12-26 | Philips Electronics North America Corporation | Method and system for processing incoming calls on a communication unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105577844A (en) * | 2014-11-06 | 2016-05-11 | 普天信息技术有限公司 | Method for generating multicast user plane address, core network device and terminal |
| CN105577844B (en) * | 2014-11-06 | 2018-12-14 | 普天信息技术有限公司 | Generate method, equipment of the core network and the terminal of multicast user face address |
| CN112217789A (en) * | 2020-09-01 | 2021-01-12 | 深圳方位通讯科技有限公司 | Method and system for converting SIP call into multicast transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102523233B (en) | 2015-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2009110765A (en) | SYSTEM AND METHOD FOR INDIRECT COMMUNICATION FOR MOBILE PHONES | |
| CN105635945A (en) | Device communication method and system based on WI-FI Aware | |
| CN109889534B (en) | VoIP (Voice over Internet protocol) communication method fusing IP (Internet protocol) network and LTE (Long term evolution) network | |
| CN101778485A (en) | Method and device for building circuit switch link of WiFi handheld equipment | |
| US8718045B2 (en) | System and method for switching between public switched telephone networks and voice over internet protocol networks | |
| CA2513495A1 (en) | Call forwarding in a packet switched system with back up terminals | |
| CN101019449A (en) | Handoff of communication sessions between cellular and desktop telephones | |
| CN101931904A (en) | Method and system for multimedia call-missing remind as well as SIP (Session Initiation Protocol) server thereof | |
| CN101860629B (en) | Method, equipment and system for binding external exchange port and IP phone in one-to-one correspondence | |
| CN101072261A (en) | Method, device and system for realizing call transfer | |
| CN102523233B (en) | Paging method based on session initiation protocol (SIP) and system thereof | |
| CN1976376B (en) | Method for calling session, IP telephone system and IP telephone terminal | |
| CN102447713B (en) | Call park method and system based on session initiation protocol (SIP) | |
| CN101309462A (en) | Method for implementing fixed phone and mobile phone combined answering | |
| EP2579526B1 (en) | Methods and devices for uniform number communication on a home gateway | |
| JP4861491B2 (en) | Telephone system, telephone exchange apparatus, and connection control method used in telephone exchange apparatus | |
| CN103905671A (en) | Method for implementing emergency call services of VOIP system | |
| US7957395B2 (en) | Systems and methods for a hybrid telephony service | |
| CN110463170A (en) | System, device and method for the associated line calling between internet protocol voice (VoIP) phone | |
| US7729340B2 (en) | IP telephone apparatus | |
| KR100549438B1 (en) | VIP Emergency Command Simultaneous Call System and Its Control Method | |
| CN103139055B (en) | Voice home gateway side realizes method and the device of internal call transfer | |
| CN101594600B (en) | Media conversion method based on soft switch, soft switch and media conversion gateway | |
| CN101110870B (en) | Method for implementing switch hook in conversation initialized protocol | |
| CN100433677C (en) | Method for realizing networked phone, and device of networked phone |
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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Guangzhou Science City, south of Guangdong City, the first cloud road, No. 16 Patentee after: GHT Co., Ltd. Address before: 510663 Guangzhou Science City, south of Guangdong City, the first cloud road, No. 16 Patentee before: Guangzhou GHT Communication Co., Ltd. |