CN1845534A - System and method for realizing Internet protocol voice service - Google Patents
System and method for realizing Internet protocol voice service Download PDFInfo
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- CN1845534A CN1845534A CNA2006100808305A CN200610080830A CN1845534A CN 1845534 A CN1845534 A CN 1845534A CN A2006100808305 A CNA2006100808305 A CN A2006100808305A CN 200610080830 A CN200610080830 A CN 200610080830A CN 1845534 A CN1845534 A CN 1845534A
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Abstract
The disclosed system and method for VoIP business builds an IP path with a TCP path and a UDP path between traditional gateways connected to the calling and called PBXs; sending the voice signaling or data from calling PSTN to the called gateway and then to the called PSTN user. This invention needs no voice interface hardware or IP voice gateway to reduce cost for VoIP network greatly.
Description
Technical field
The present invention relates to the voice communication technical field, be specifically related to a kind of system and method for realizing internet protocol voice service.
Background technology
Internet protocol voice (VoIP) the application on the router make speech business as: Plain Old Telephone Service is carried on the IP network.VoIP realizes by packets of voice, mainly is a kind of software solution, but need come support voice to transmit in IP network installing modularization voice plug-in card on the router additional.
The telephone service of realizing on the internet is called Internet telephony, and Internet telephony is the old model of VoIP business.Fig. 1 is for realizing the networking structure figure of VoIP business, and as shown in Figure 1, the ip voice gateway among the figure provides two kinds of interfaces simultaneously: a kind of be the interface of supporting public switch telephone network (PSTN) voice protocol as: E1 or T1 interface are used for linking to each other with PSTN; Another kind be the interface of supporting the ip voice agreement as: Ethernet interface or ATM(Asynchronous Transfer Mode) interface are used for linking to each other with IP network.And, the ip voice gateway have with PSTN side voice signaling as: signaling such as R2, ISDN and IP network side voice signaling as: H.323, the function changed mutually of conversation initialized protocol signalings such as (SIP).Concrete VoIP Business Processing process is: after Calling Side ip voice gateway is received the voice signaling and data that caller PSTN user sends, this voice signaling and data are converted to the packet voice information that can transmit on IP network, and then be sent to callee side ip voice gateway through IP network, is that PSTN nets discernible voice signal by callee side ip voice gateway with the packet voice information reverting, and sends called PSTN user to by PSTN.In actual VoIP networking, also may comprise gatekeeper (GateKeeper) server, to be used to finish functions such as route and access control.
By said process as can be seen: the ip voice gateway must have voice interface card hardware, must support PSTN voice protocol signaling and ip voice protocol signaling and the function of changing mutually between the two, and this has increased the hardware and software cost of VoIP networking greatly.
Summary of the invention
In view of this, the invention provides a kind of system and method for the VoIP of realization business, with hardware cost in reduction VoIP networking.
Technical scheme of the present invention is achieved in that
A kind of system that realizes the VoIP business, comprise: caller PBX, the caller conventional gateway that directly links to each other with caller PBX, called PBX, the called conventional gateway that directly links to each other with called PBX, and has IP tunnel between caller conventional gateway and the called conventional gateway, wherein
Caller PBX sends to the caller conventional gateway with voice signaling or data;
The caller conventional gateway, voice signaling or data that caller PBX is sent send to called conventional gateway by IP tunnel;
Called conventional gateway, the voice signaling that the caller conventional gateway is sent is transmitted to called PBX;
Called PBX receives voice signaling or data that called conventional gateway is sent.
Described IP tunnel comprises the TCP passage and the UDP passage that is used for transmitting audio data that are used for the transferring voice signaling,
And, described caller conventional gateway comprises: gap information adds module, be used for after receiving the speech data that caller PBX sends, the gap information of this speech data added in the voice data message, and this speech data is sent to called conventional gateway by described UDP passage.
Described IP tunnel comprises the TCP passage and the UDP passage that is used for transmitting audio data that are used for the transferring voice signaling,
And described called conventional gateway comprises: the gap information analysis module, be used for after receiving the speech data that the caller conventional gateway is sent, and according to the gap information in this voice data message, this speech data is sent to called PBX by corresponding time slot.
Described IP tunnel comprises the UDP passage that a TCP passage and number equate with the data slot number,
And described caller conventional gateway comprises: time slot and UDP passage corresponding relation are preserved module and UDP passage determination module, wherein:
Time slot and UDP passage corresponding relation are preserved module, are used to preserve the corresponding relation of data slot information and UDP gap marker, and the gap information of sending according to UDP passage determination module, and the UDP gap marker of correspondence is returned to UDP passage determination module,
UDP passage determination module, be used for after receiving the speech data that caller PBX sends, the gap information of this speech data is sent to time slot and UDP passage corresponding relation preservation module, and preserve the UDP gap marker that module is returned according to time slot and UDP passage corresponding relation, the UDP passage of speech data by correspondence sent to called conventional gateway.
Described IP tunnel comprises the UDP passage that a TCP passage and number equate with the data slot number,
And described called conventional gateway comprises: time slot and UDP passage corresponding relation are preserved module and time slot determination module, wherein:
Time slot and UDP passage corresponding relation are preserved module, and be used to preserve the corresponding relation of data slot information and UDP gap marker, and, time slot corresponding information returned to the time slot determination module according to the UDP channel information that time slot passage determination module is sent,
The time slot determination module, be used for after receiving the speech data that the caller conventional gateway is sent by the UDP passage, this UDP gap marker is sent to time slot and UDP passage corresponding relation preservation module, and preserve the gap information that module is returned according to time slot and UDP passage corresponding relation, speech data is sent to called PBX by time slot corresponding.
A kind of method that realizes the VoIP business, with calling and called conventional gateway that calling and called PBX directly links to each other between set up an IP tunnel, this method comprises:
After A, caller conventional gateway are received the voice signaling or data that caller PBX sends, this voice signaling or data are sent to called conventional gateway by described IP tunnel;
B, called conventional gateway send to the called subscriber with voice signaling or the speech data of receiving by called PBX.
Include a TCP passage in the described IP tunnel,
When the described caller conventional gateway of steps A was received the voice signaling that caller PBX sends, described caller conventional gateway sent to called conventional gateway by IP tunnel with voice signaling and is: by described TCP passage voice signaling is sent to called conventional gateway.
Described IP tunnel includes a UDP passage,
When the described caller conventional gateway of steps A is received the speech data that caller PBX sends, the described caller conventional gateway of steps A sends to called conventional gateway by described IP tunnel with this speech data and comprises: the caller conventional gateway is added this speech data time slot corresponding information in the voice data message to, then this speech data is sent to called conventional gateway by this UDP passage;
And described step B comprises: after called conventional gateway is received this speech data, according to the gap information that carries in this voice data message, this speech data is sent to called PBX by time slot corresponding.
Described IP tunnel includes the UDP passage that number equals the data slot sum, and caller conventional gateway and called conventional gateway preserve the corresponding relation of data slot information and UDP gap marker,
When the described caller conventional gateway of steps A was received the speech data that caller PBX sends, the described caller conventional gateway of steps A sent to called conventional gateway by described IP tunnel with this speech data and comprises:
The caller conventional gateway finds the UDP gap marker of the gap information correspondence of this speech data in described corresponding relation, then the UDP passage of this speech data by correspondence sent to called conventional gateway;
And described step B comprises: after called conventional gateway is received this speech data, in described corresponding relation, find the UDP gap marker time slot corresponding information that receives this speech data, this speech data is sent to called PBX by time slot corresponding.
Compared with prior art, the present invention by with calling and called conventional gateway that calling and called PBX directly links to each other between set up an IP tunnel, the caller conventional gateway is given called conventional gateway by this IP tunnel with voice signaling or data penetration transmission that caller PSTN user sends, and then sending to called PSTN user by called conventional gateway, described IP tunnel comprises that a TCP passage and one or more that is used for the transferring voice signaling is used for the UDP passage of transmitting audio data; In the VoIP group-network construction provided by the invention, do not need to have voice interface card hardware simultaneously, and support PSTN voice protocol signaling and ip voice protocol signaling and the ip voice gateway of mutual translation function between the two, by only having the conventional gateway of supporting E1/T1 data card and ICP/IP protocol stack, just can carry out the VoIP business, greatly reduce the hardware and software cost of VoIP networking.
Description of drawings
Fig. 1 is the networking structure figure of existing realization VoIP business;
Fig. 2 is the networking structure figure of realization VoIP business provided by the invention;
The structure chart of the caller conventional gateway that Fig. 3 provides for the embodiment of the invention one;
The structure chart of the caller conventional gateway that Fig. 4 provides for the embodiment of the invention two;
The flow chart of the realization voip signaling business that Fig. 5 provides for the embodiment of the invention one;
The flow chart of the realization VoIP data service that Fig. 6 provides for the embodiment of the invention two;
The flow chart of the realization VoIP data service that Fig. 7 provides for the embodiment of the invention three.
Embodiment
Core concept of the present invention is: with calling and called conventional gateway that caller and called users switch (PBX) directly links to each other between set up an IP tunnel, be used for transferring voice signaling and data.Particularly, in this IP tunnel, set up a transmission control protocol (TCP) passage, be used for the transferring voice signaling; Simultaneously in this IP tunnel, set up one or more User Datagram Protoco (UDP) (UDP) passage, be used for transmitting audio data.
Among the present invention, conventional gateway refers to only to be possessed transparent transmission and supports the voice signaling of PSTN voice protocol or the interface of data, and does not possess the gateway that voice signaling or data is carried out any processing capacity.
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Fig. 2 is the networking structure figure of realization VoIP business provided by the invention, as shown in Figure 2, it mainly comprises: caller PBX, the caller conventional gateway that directly links to each other with caller PBX, called PBX, the called conventional gateway that directly links to each other with called PBX, and have IP tunnel between caller conventional gateway and the called conventional gateway.
Caller PBX: be used for voice signaling or data are sent to the caller conventional gateway, and receive voice signaling or the data that the caller conventional gateway is sent.
The caller conventional gateway: the voice signaling or the data that are used for caller PBX is sent send to called conventional gateway by IP tunnel; Voice signaling or data that called conventional gateway is sent by IP tunnel send to caller PBX.
Called conventional gateway: be used for voice signaling or data that the caller conventional gateway is sent by IP tunnel are sent to called PBX; Voice signaling or data that called PBX is sent send to the caller conventional gateway by IP tunnel.
Called PBX: be used to receive voice signaling or the data that called conventional gateway is sent, voice signaling or data are sent to called conventional gateway.
Because the interface on the conventional gateway comprises a signalling time slot and a plurality of data slot, therefore, in actual applications, IP tunnel between caller conventional gateway and the called conventional gateway can comprise: TCP passage that is used for the transferring voice signaling and one are used to transmit the UDP passage of the speech data of all data slots, perhaps comprise: a TCP passage or many UDP passages, and the speech data of a data time slot of every UDP channel transfer.Below above-mentioned two kinds of situations are described respectively:
IP tunnel between situation one, caller conventional gateway and the called conventional gateway comprises: a TCP passage and a UDP passage.In this case, caller conventional gateway and called conventional gateway mainly comprise: gap information adds module and gap information analysis module.With the caller conventional gateway is example, the function of this two module is described, as shown in Figure 3, wherein:
Gap information adds module: be used for after receiving the speech data that caller PBX sends, this speech data time slot corresponding information is added in the heading of speech data, then this speech data is sent to called conventional gateway by the UDP passage.
The gap information analysis module: be used for after receiving the speech data that called conventional gateway is sent by the UDP passage, the gap information according in this voice data message head sends to caller PBX with this speech data by corresponding time slot.
IP tunnel between situation two, caller conventional gateway and the called conventional gateway comprises: a TCP passage and many UDP passages, and every corresponding data time slot of UDP passage.Under this kind situation, caller conventional gateway and called conventional gateway mainly comprise: time slot and UDP passage corresponding relation are preserved module, UDP passage determination module and time slot determination module, with the caller conventional gateway is example, function to these three modules is described, as shown in Figure 4, and wherein:
Time slot and UDP passage corresponding relation are preserved module: the corresponding relation that is used to preserve gap information and UDP gap marker, after receiving the request of carrying gap information that UDP passage determination module is sent, the UDP gap marker of correspondence is returned to UDP passage determination module; After receiving the request of carrying the UDP gap marker that the time slot determination module is sent, time slot corresponding information is returned to the time slot determination module.
UDP passage determination module: be used for behind the speech data of receiving from caller PBX, the gap information of this speech data is carried to obtain sends to time slot in the UDP channel request and UDP passage corresponding relation is preserved module, and preserve the UDP gap marker that module is returned according to time slot and UDP passage corresponding relation, the UDP passage of speech data by correspondence sent to called conventional gateway.
Time slot determination module: be used for after receiving the speech data that called conventional gateway is sent by the UDP passage, this UDP gap marker is carried to obtain sends to time slot and UDP passage corresponding relation in the time slot request and preserve module, and preserve the gap information that module is returned according to time slot and UDP passage corresponding relation, this speech data is sent to caller PBX by corresponding time slot.
Fig. 5 is under the group-network construction of realization VoIP business provided by the invention, carries out the flow chart of the specific embodiment one of voip signaling business, and as shown in Figure 5, its concrete steps are as follows:
Step 501: caller PBX receives the voice signaling that caller PSTN user sends, and this voice signaling is transmitted to and self direct-connected caller conventional gateway.
Step 502: after the caller conventional gateway is received this voice signaling, this voice signaling is transmitted to called conventional gateway by the TCP passage between self and the called conventional gateway.
E1/T1 Interface on the conventional gateway comprises a signalling time slot and a plurality of data slot, the corresponding source port number/source IP address of each time slot, simultaneously, the corresponding destination slogan/purpose IP address of each source port number/source IP address.Conventional gateway is preserved the corresponding relation of gap information and source port number/source IP address, and the corresponding relation of source port number/source IP address and destination slogan/purpose IP address.Therefore, as long as which time slot is the caller conventional gateway learn voice signaling or data from, just can learn the source port number/source IP address and the destination slogan/purpose IP address of this voice signaling or data; Simultaneously, receive voice signaling or data, just can learn which time slot this voice signaling or data should send to the called subscriber from as long as which port is called conventional gateway learn from.
Step 503: called conventional gateway by the signalling time slot of self, is transmitted to called PBX with this voice signaling after receiving this voice signaling from the TCP passage.
After called conventional gateway is received this voice signaling, be the destination slogan, learn this voice signaling time slot corresponding, then this voice signaling is mail to called PSTN user by described time slot according to the port numbers that receives this voice signaling.
Step 504: called PBX sends to called PSTN user with this voice signaling.
Fig. 6 is under the networking structure of realization VoIP business provided by the invention, carry out the flow chart of the specific embodiment two of VoIP data service, in this embodiment, the IP tunnel between caller conventional gateway and the called conventional gateway only comprises a UDP passage, as shown in Figure 6, its concrete steps are as follows:
Step 601: caller PBX receives the speech data that caller PSTN user sends, and this speech data is transmitted to the caller conventional gateway.
Step 602: after the caller conventional gateway is received this speech data, this speech data time slot corresponding information is added in this voice data message, then this speech data is sent to called conventional gateway by the UDP passage between self and the called conventional gateway.
Step 603: called conventional gateway reads the gap information that carries in this voice data message after receiving this speech data from the UDP passage, by corresponding time slot this speech data is sent to called PBX then.
Similar to step 503, after called conventional gateway is received this speech data,,, this message is mail to the called subscriber by described time slot according to the gap information that carries in this voice data message.
Step 604: called PBX sends to called PSTN user with this speech data.
Fig. 7 is under the networking structure of realization VoIP business provided by the invention, carry out the flow chart of the specific embodiment three of VoIP data service, in this embodiment, IP tunnel between caller conventional gateway and the called conventional gateway comprises many UDP passages, every corresponding data time slot of UDP passage, and the calling and called conventional gateway is preserved the corresponding relation of data slot information and UDP gap marker in advance, and as shown in Figure 7, its concrete steps are as follows:
Step 701: caller PBX is transmitted to the caller conventional gateway with this speech data after receiving the speech data that caller PSTN user sends.
Step 702: after the caller conventional gateway is received this speech data, according to the gap information of this speech data, and the data slot information of self preserving and the corresponding relation of UDP gap marker, find the UDP gap marker corresponding with data slot information.
Step 703: the caller conventional gateway is according to the UDP gap marker that finds, and the UDP passage by correspondence is forwarded to called conventional gateway with speech data.
Step 704: after called conventional gateway is received this speech data, according to the UDP passage that receives this speech data, and the data slot information of self preserving and the corresponding relation of UDP gap marker, find the data slot information corresponding with this UDP gap marker.
Step 705: called conventional gateway is transmitted to called PBX with this speech data by time slot corresponding according to the data slot information that finds.
Step 706: called PBX sends to called PSTN user with speech data.
The above only is process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of system that realizes internet protocol voice VoIP business, it is characterized in that, comprise: calling subscriber's switch PBX, the caller conventional gateway that directly links to each other with caller PBX, called PBX, the called conventional gateway that directly links to each other with called PBX, and has IP tunnel between caller conventional gateway and the called conventional gateway, wherein
Caller PBX sends to the caller conventional gateway with voice signaling or data;
The caller conventional gateway, voice signaling or data that caller PBX is sent send to called conventional gateway by IP tunnel;
Called conventional gateway, the voice signaling that the caller conventional gateway is sent is transmitted to called PBX;
Called PBX receives voice signaling or data that called conventional gateway is sent.
2, the system as claimed in claim 1 is characterized in that, described IP tunnel comprises the TCP passage and the UDP passage that is used for transmitting audio data that are used for the transferring voice signaling,
And, described caller conventional gateway comprises: gap information adds module, be used for after receiving the speech data that caller PBX sends, the gap information of this speech data added in the voice data message, and this speech data is sent to called conventional gateway by described UDP passage.
3, system as claimed in claim 1 or 2 is characterized in that, described IP tunnel comprises the TCP passage and the UDP passage that is used for transmitting audio data that are used for the transferring voice signaling,
And described called conventional gateway comprises: the gap information analysis module, be used for after receiving the speech data that the caller conventional gateway is sent, and according to the gap information in this voice data message, this speech data is sent to called PBX by corresponding time slot.
4, the system as claimed in claim 1 is characterized in that, described IP tunnel comprises the UDP passage that a TCP passage and number equate with the data slot number,
And described caller conventional gateway comprises: time slot and UDP passage corresponding relation are preserved module and UDP passage determination module, wherein:
Time slot and UDP passage corresponding relation are preserved module, are used to preserve the corresponding relation of data slot information and UDP gap marker, and the gap information of sending according to UDP passage determination module, and the UDP gap marker of correspondence is returned to UDP passage determination module,
UDP passage determination module, be used for after receiving the speech data that caller PBX sends, the gap information of this speech data is sent to time slot and UDP passage corresponding relation preservation module, and preserve the UDP gap marker that module is returned according to time slot and UDP passage corresponding relation, the UDP passage of speech data by correspondence sent to called conventional gateway.
5, the system as claimed in claim 1 is characterized in that, described IP tunnel comprises the UDP passage that a TCP passage and number equate with the data slot number,
And described called conventional gateway comprises: time slot and UDP passage corresponding relation are preserved module and time slot determination module, wherein:
Time slot and UDP passage corresponding relation are preserved module, and be used to preserve the corresponding relation of data slot information and UDP gap marker, and, time slot corresponding information returned to the time slot determination module according to the UDP channel information that time slot passage determination module is sent,
The time slot determination module, be used for after receiving the speech data that the caller conventional gateway is sent by the UDP passage, this UDP gap marker is sent to time slot and UDP passage corresponding relation preservation module, and preserve the gap information that module is returned according to time slot and UDP passage corresponding relation, speech data is sent to called PBX by time slot corresponding.
6, a kind of method that realizes the VoIP business is characterized in that, with calling and called conventional gateway that calling and called PBX directly links to each other between set up an IP tunnel, this method comprises:
After A, caller conventional gateway are received the voice signaling or data that caller PBX sends, this voice signaling or data are sent to called conventional gateway by described IP tunnel;
B, called conventional gateway send to the called subscriber with voice signaling or the speech data of receiving by called PBX.
7, method as claimed in claim 6 is characterized in that, includes a TCP passage in the described IP tunnel,
When the described caller conventional gateway of steps A was received the voice signaling that caller PBX sends, described caller conventional gateway sent to called conventional gateway by IP tunnel with voice signaling and is: by described TCP passage voice signaling is sent to called conventional gateway.
As claim 6 or 7 described methods, it is characterized in that 8, described IP tunnel includes a UDP passage,
When the described caller conventional gateway of steps A is received the speech data that caller PBX sends, the described caller conventional gateway of steps A sends to called conventional gateway by described IP tunnel with this speech data and comprises: the caller conventional gateway is added this speech data time slot corresponding information in the voice data message to, then this speech data is sent to called conventional gateway by this UDP passage;
And described step B comprises: after called conventional gateway is received this speech data, according to the gap information that carries in this voice data message, this speech data is sent to called PBX by time slot corresponding.
As claim 6 or 7 described methods, it is characterized in that 9, described IP tunnel includes the UDP passage that number equals the data slot sum, and caller conventional gateway and called conventional gateway preserve the corresponding relation of data slot information and UDP gap marker,
When the described caller conventional gateway of steps A was received the speech data that caller PBX sends, the described caller conventional gateway of steps A sent to called conventional gateway by described IP tunnel with this speech data and comprises:
The caller conventional gateway finds the UDP gap marker of the gap information correspondence of this speech data in described corresponding relation, then the UDP passage of this speech data by correspondence sent to called conventional gateway;
And described step B comprises: after called conventional gateway is received this speech data, in described corresponding relation, find the UDP gap marker time slot corresponding information that receives this speech data, this speech data is sent to called PBX by time slot corresponding.
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| CNB2006100808305A CN100452771C (en) | 2006-05-16 | 2006-05-16 | System and method for realizing Internet protocol voice service |
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| CNB2006100808305A CN100452771C (en) | 2006-05-16 | 2006-05-16 | System and method for realizing Internet protocol voice service |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136959B (en) * | 2007-10-22 | 2011-06-15 | 杭州华三通信技术有限公司 | Method and system for transmitting analog control signalling on E&M virtual private line |
| CN102638627A (en) * | 2011-02-10 | 2012-08-15 | 鸿富锦精密工业（深圳）有限公司 | Default gateway, terminal equipment and networking protocol speech signaling switching method |
| CN103581138A (en) * | 2012-08-01 | 2014-02-12 | 京信通信系统（中国）有限公司 | Data transmission method and device |
| CN108600565A (en) * | 2018-04-24 | 2018-09-28 | 深圳震有科技股份有限公司 | More PBX share network system, method and the interchanger of SS7 signalling points |
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| US6842447B1 (en) * | 1999-06-14 | 2005-01-11 | Mci, Inc. | Internet protocol transport of PSTN-to-PSTN telephony services |
| US6453034B1 (en) * | 1999-07-29 | 2002-09-17 | Mci Worldcom, Inc. | Method of and system for extending internet telephony over virtual private network direct access lines |
| US6654722B1 (en) * | 2000-06-19 | 2003-11-25 | International Business Machines Corporation | Voice over IP protocol based speech system |
| KR100383625B1 (en) * | 2001-05-26 | 2003-05-14 | 삼성전자주식회사 | Routing service method in voice over internet protocol system |
| CN1170393C (en) * | 2001-10-04 | 2004-10-06 | 华为技术有限公司 | Method and system of realizing IP speech service of private network |
| IL154921A (en) * | 2003-03-13 | 2011-02-28 | Mosaid Technologies Inc | Telephone system having multiple distinct sources and accessories therefor |
| GB2414622A (en) * | 2004-05-26 | 2005-11-30 | Siemens Ag | Switching from an established media path to a new media path in a Packet based network. |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136959B (en) * | 2007-10-22 | 2011-06-15 | 杭州华三通信技术有限公司 | Method and system for transmitting analog control signalling on E&M virtual private line |
| CN102638627A (en) * | 2011-02-10 | 2012-08-15 | 鸿富锦精密工业（深圳）有限公司 | Default gateway, terminal equipment and networking protocol speech signaling switching method |
| CN102638627B (en) * | 2011-02-10 | 2014-03-26 | 鸿富锦精密工业（深圳）有限公司 | Default gateway, terminal equipment and networking protocol speech signaling switching method |
| CN103581138A (en) * | 2012-08-01 | 2014-02-12 | 京信通信系统（中国）有限公司 | Data transmission method and device |
| CN108600565A (en) * | 2018-04-24 | 2018-09-28 | 深圳震有科技股份有限公司 | More PBX share network system, method and the interchanger of SS7 signalling points |
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| CN100452771C (en) | 2009-01-14 |
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Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: Huasan Communication Technology Co., Ltd. |
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Granted publication date: 20090114 Termination date: 20200516 |