CN101478617A - Method, system, household gateway and USB wireless device for implementing VOIP voice - Google Patents
Method, system, household gateway and USB wireless device for implementing VOIP voice Download PDFInfo
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- CN101478617A CN101478617A CNA2008101917915A CN200810191791A CN101478617A CN 101478617 A CN101478617 A CN 101478617A CN A2008101917915 A CNA2008101917915 A CN A2008101917915A CN 200810191791 A CN200810191791 A CN 200810191791A CN 101478617 A CN101478617 A CN 101478617A
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Abstract
The invention provides a method for implementing a Voice Over Internet Protocol (VOIP) speech, a system, a family gateway and a USB cordless device comprising a service platform for loading a cordless application module and a USB cordless device driver to the family gateway and configuring VOIP service parameters; the USB cordless device for initiating code to a cordless telephone and succeeding code, separating a speech data and a signaling from the cordless data and sending the speech data after a speech signal processing of the speech data to the family gateway; the cordless telephone for establishing the connection to the terminal VOIP speech calling and sending the cordless data to the USB cordless device; the family gateway for processing the speech data to a VOIP data message according to the VOIP service parameters and sending the message to an Session Initiation Protocol (SIP) server; the SIP server for sending the VOIP data message to a called terminal. The invention implements the VOIP service on the family gateway, simplifies the VOIP operation complexity and realizes the administrable VOIP service based on the family gateway.
Description
Technical field
The present invention relates to home gateway, USB cordless apparatus, wireless phone and realize manageable VOIP system and method.
Background technology
At present, voice technology that IP (Internet Protocol) is online and standard are ripe, obtained to use widely, related products comprise VOIP (Voice over InternetProtocol, the networking telephone) gateway, IPPBX (IP phone switch or IP group telephone), PCPBX (based on the small-sized IP phone switch of PC server) or the like.Describe below in conjunction with specific product.
Such as, a kind of USB VOIP plain old telephone adapter has telephone interface, telephone line interface and USB interface, is connected respectively to the telephone line that ordinary telephone set, telecom operators provide and the PC of VOIP conversation software has been installed.The user uses ordinary telephone set, need not to operate keyboard, the mouse of PC, and the VOIP conversation software that just can control on the PC carries out the VOIP conversation, also can dial common pstn telephone as usual, and can switch between the two; VOIP incoming call back telephone set also can ring, and off-hook can be answered the VOIP incoming call.This adapter is a computer plug-in card, uses USB device to connect PC and fixed telephone network, and VOIP is provided service.The user relies on computer and calls out and answer the VOIP phone, and computer outage, shutdown back VOIP phone also can't use or answer.
And for example, existing a kind of Wireless IP gateway comprises internet gateway module, speech data packet handing module and radio receiving transmitting module, and wherein the internet gateway module is used to receive the VoP from the Internet; The VoP that the speech data packet handing module is used for receiving from the internet gateway module carries out buffer memory; Radio receiving transmitting module is used for the VoP behind the buffer memory is carried out wireless-modulated, and the speech data after will modulating sends to wireless portable terminal.Though this technology can support wireless portable terminal to insert, VOIP is provided service, speech data packet handing module and radio receiving transmitting module need be solidificated in intra-gateway.The home gateway cost is increased, and is the wasting of resources for the user who does not use or do not re-use the VOIP business.In addition, business modification inconvenience need be made house calls.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of method, system, home gateway and USB cordless apparatus of the VOIP of realization voice.On home gateway, realize the VOIP service, simplify the VOIP operation complexity, and can realize based on the manageable VOIP business of home gateway.
According to an aspect of the present invention, a kind of method that realizes the VOIP voice is proposed, be applied to realize the system of VOIP voice, described system comprises business platform, home gateway, USB cordless apparatus, wireless phone and sip server, said method comprising the steps of: load wireless application module and the driving of USB cordless apparatus by described business platform to described home gateway, configuration VOIP service parameter; Described USB cordless apparatus and described wireless phone are initiated to sign indicating number and to the sign indicating number success; Setting up described wireless phone is connected with the VOIP audio call of terminal called; Send cordless data from described wireless phone to described USB cordless apparatus; From described cordless data, isolate speech data and signaling by described USB cordless apparatus, described speech data is carried out sending to described home gateway after voice signal is handled; According to described VOIP service parameter, on described home gateway, described language data process is become the VOIP data message, and send to described terminal called by described sip server.
According to a further aspect of the invention, also propose a kind of system of the VOIP of realization voice, comprising: business platform loads wireless application module and the driving of USB cordless apparatus to home gateway, configuration VOIP service parameter; The USB cordless apparatus is initiated to sign indicating number and to the sign indicating number success to wireless phone; From cordless data, isolate speech data and signaling, described speech data is carried out sending to described home gateway after voice signal is handled; Wireless phone, foundation is connected with the VOIP audio call of terminal called, and sends described cordless data to described USB cordless apparatus; Home gateway according to described VOIP service parameter, becomes the VOIP data message with described language data process, and sends to sip server; Sip server sends to described terminal called with described VOIP data message.
According to a further aspect of the invention, a kind of home gateway that is used to realize the VOIP voice is also proposed, comprise: device driver module, moving described USB cordless apparatus drives, drive the encoding and decoding of described USB cordless apparatus support voice, and the voice flow that will eat dishes without rice or wine to transmit, protocol streams are converted to the form of wireless application module identification; Wireless application module loads described VOIP service parameter, and the language data process that described device driver module is sent becomes the VOIP data message and sends to the Session Initiation Protocol module; The Session Initiation Protocol module is finished session foundation with described sip server is interconnected, and is transmitted described VOIP data message.
According to a further aspect of the invention, also propose a kind of USB cordless apparatus that is used to realize the VOIP voice, comprising: radio-frequency module receives aerial cordless data, and described cordless data is delivered baseband module; Baseband module is isolated speech data and signaling from described cordless data, described speech data is sent to the encoding and decoding speech module, and described signaling is sent to control module; The encoding and decoding speech module carries out sending to described home gateway after voice signal is handled to described speech data; Control module is handled described signaling, manages and shows described USB cordless apparatus current state.
Compared with prior art, VOIP voice of the present invention are based on home gateway, when needed wireless application module, VOIP service parameter and USB cordless apparatus are driven long-range being carried on the home gateway, insert the USB cordless apparatus by USB interface on the home gateway, connect wireless phone by air interface, for the user provides wireless VOIP service.The present invention can realize the VOIP service on home gateway, simplified the VOIP operation complexity.In addition, but business platform remote detection VOIP service operation situation, for example service deployment situation, driving situation, USB cordless apparatus situation or the like; But business platform remotely modifying VOIP service parameter; Business platform also can long-rangely be cancelled the VOIP service, and the wireless application module of for example long-range deletion, VOIP service parameter and USB cordless apparatus drive.Realization is based on the manageable VOIP business of home gateway.
Description of drawings
Fig. 1 illustrates the system construction drawing of a kind of VOIP of realization voice among the present invention.
Fig. 2 illustrates the structure chart of home gateway among the present invention.
Fig. 3 illustrates the structure chart of USB cordless apparatus.
Fig. 4 illustrates the method flow diagram of realizing the VOIP voice among the present invention.
Fig. 5 illustrates the method embodiment that realizes the VOIP audio call among the present invention.
Fig. 6 illustrates among the present invention local on-hook flow chart behind the end of calling.
Embodiment
Fig. 1 illustrates the system of a kind of VOIP of realization voice among the present invention, comprises business platform, home gateway, USB cordless apparatus, cordless telephone and sip server.
Business platform loads wireless application module and the driving of USB cordless apparatus to home gateway, configuration VOIP service parameter.
Logic interfacing between business platform and the home gateway is the M interface, adopts the TR-069 serial protocols, also can detect and change the VOIP business of described home gateway operation by this interface.Such as, described business platform is revised the VOIP service parameter of described home gateway; Described business platform is controlled described home gateway and is deleted described wireless application module, VOIP service parameter, the driving of USB cordless apparatus, and then cancels the VOIP service.Support VOIP converse necessary protocol network, for example Session Initiation Protocol network.Having solved prior art does not support home gateway is carried out long-range arrangement, revises, cancels or the like the VOIP service management function.
Home gateway becomes the VOIP data message according to described VOIP service parameter with described language data process, and sends to sip server.
Home gateway loads described wireless application module and the USB cordless apparatus drives, configuration VOIP service parameter, and the USB cordless apparatus that operation is downloaded drives, and drives USB cordless apparatus support voice coding and decoding function, where necessary support voice transcoding function.N interface between home gateway and the USB cordless apparatus adopts usb mode, transmits Media Stream, signaling flow and module management control information etc.Can also picture and/or Word message be sent to wireless phone by this interface, and then support long-range picture and text transmission.The concrete structure of home gateway will be elaborated in Fig. 2.
The USB cordless apparatus is initiated to sign indicating number and to the sign indicating number success to wireless phone; From cordless data, isolate speech data and signaling, described speech data is carried out sending to described home gateway after voice signal is handled.
The USB cordless apparatus is the low-power wireless transmitter, patches on the USB interface of home gateway, can insert wireless phone at user side, realizes Basic voice call by air interface, and sends to wireless phone such as literal and/or picture.Be the R interface between USB cordless apparatus and the wireless phone, can adopt DECT (numeral strengthens radio communication) or PHS wireless air interface technologies such as (Personal Handyphone Systems).The R interface belongs to a kind of of home gateway T interface (application terminal interface).The USB cordless apparatus receives the aerial cordless data (containing wireless channel foundation, voice, control signaling etc.) of wireless phone, from cordless data, isolate speech data and signaling, described speech data is carried out sending to home gateway after voice signal is handled, be processed into the VOIP data message by the wireless application module of home gateway.Described signaling is handled, guaranteed normal operations such as wireless channel, voice communication, equipment state.At network side, this USB cordless apparatus and home gateway interface are converted to prescribed form with voice, the data flow of eating dishes without rice or wine to collect and are passed to home gateway.The USB cordless apparatus is supported multiple encoding and decoding speech method, as G.711, G.722, G.729 or the like.By instigating the current USB cordless apparatus of mode display device state such as lamp, as power on, in sign indicating number, the conversation or the like.The concrete structure of this USB cordless apparatus will be elaborated in Fig. 3.
Wireless phone is set up and is connected with the VOIP audio call of terminal called, and sends described cordless data to described USB cordless apparatus.
Wireless phone carries out the portability radio communication as user communication terminal with the USB cordless apparatus, and the wireless signal that provides by the USB cordless apparatus covers, and inserts home gateway.Finish the voice flow encoding and decoding by the USB cordless apparatus, the intercommunication of realization and other IP terminals or PSTN, GSM network provides the wireless voice service in broadband that QoS (service quality) guarantees.Wireless phone comprises radio-frequency apparatus (comprising antenna, transmitter unit and receiving element), baseband equipment, encoding and decoding speech equipment, control appliance and transceiver equipment.
Sip server sends to described terminal called with described VOIP data message.Sip server is SIP call treatment center, link to each other by H interface with home gateway, can with PSTN (public switch telephone network), GSM (global mobile communication) network interworking.After the opposite end phone received calling, the notice home gateway was set up voice channel.
Fig. 2 illustrates the structure chart of home gateway among the present invention.Comprise: wireless application module, device driver module, SIP (session initiation protocol) protocol module.
Wireless application module loads described VOIP service parameter, and the language data process that described device driver module is sent becomes the VOIP data message and sends to the Session Initiation Protocol module.Support mutual, the signaling of Session Initiation Protocol to resolve functions such as distribution, the encapsulation of RTP media data, service condition management.Wireless application module also and between e family's client has F interface, and this interface is used to realize browsing by e family's client the service condition of wireless application, revises service parameter etc.
Between device driver module and the wireless application module is E interface, and the USB cordless apparatus that the device driver module operation is downloaded drives, and is used to drive USB cordless apparatus support voice coding and decoding function, where necessary support voice transcoding function.The voice flow that device driver module will eat dishes without rice or wine to transmit, protocol streams are converted to the form that wireless application module can be discerned, and are undertaken alternately by this interface.Simultaneously, this interface transmission content also comprises managing control informations such as USB cordless apparatus ability, Ropeless service state, service parameter modification.
Session Initiation Protocol module and described sip server are interconnected finishes session foundation, and transmits described VOIP data message.And be G interface between the wireless application module, by information such as this interface transmitting voip business configuration parameter, SIP session managements.
Fig. 3 illustrates the structure chart of USB cordless apparatus.Comprise: radio-frequency module (antenna, transmitter unit and receiving element are formed), baseband module, encoding and decoding speech module, control module.
Radio-frequency module receives aerial cordless data (containing wireless channel foundation, voice, control signaling etc.), and described cordless data is delivered baseband module.
Baseband module is analyzed described cordless data, isolates speech data and signaling, and described speech data is sent to the encoding and decoding speech module, and described signaling is sent to control module.
The encoding and decoding speech module carries out sending to home gateway after voice signal is handled to described speech data, is processed into the VOIP data message by the wireless application module of home gateway.
Control module is handled described signaling, guarantees normal operations such as wireless channel, voice communication, equipment state, manage and show current USB cordless apparatus state, as power on, in sign indicating number, the conversation or the like.
The present invention makes the original not home gateway of support voice business can realize the VOIP voice service by increase wireless application module, device driver module in home gateway.Thereby insert the USB cordless apparatus and support cordless telephone on home gateway, this voice service offers the user in the mode of cordless telephone.The user can use wireless phone to call out and answer at any time, has simplified the VOIP operation complexity.
In addition, described business platform also detects the VOIP business of described home gateway operation.Can realize based on the manageable long-range VOIP business of home gateway by actual needs unloading and managing VOIP business.
Fig. 4 illustrates the method flow diagram of realizing the VOIP voice among the present invention, may further comprise the steps:
In step 401, load wireless application module and the driving of USB cordless apparatus by described business platform to described home gateway, configuration VOIP service parameter;
In step 402, described USB cordless apparatus and described wireless phone are initiated to sign indicating number and to the sign indicating number success;
In step 403, set up described wireless phone and be connected with the VOIP audio call of terminal called;
Wherein, set up the operation that the VOIP audio call connects, can may further comprise the steps: when making a call, the described wireless phone link setup of eating dishes without rice or wine sends to described USB cordless apparatus with call number information; Described USB cordless apparatus sends to described home gateway with described call number information; Connect by described home gateway and described sip server, and send described call number information to it; When described terminal called was accepted described calling, described SIP notified described home gateway to set up voice channel; Set up described voice channel, both call sides carries out voice communication.
In step 404, send cordless data to described USB cordless apparatus from described wireless phone;
In step 405, from described cordless data, isolate speech data and signaling by described USB cordless apparatus, described speech data is carried out sending to described home gateway after voice signal is handled;
In step 406, according to described VOIP service parameter, on described home gateway, described language data process is become the VOIP data message, and send to described terminal called by described sip server.
Fig. 5 illustrates the method embodiment that realizes the VOIP audio call among the present invention, may further comprise the steps:
In step 501, business platform loads wireless application module and the driving of USB cordless apparatus to home gateway, configuration VOIP service parameter;
In step 502, home gateway has loaded to the business platform report and has finished;
In step 503, business platform carries out parameter configuration and activates this business the VOIP Ropeless service;
In step 504, home gateway activates to business platform report VOIP Ropeless service;
In step 505, the USB cordless apparatus enters the sign indicating number state, and the status lamp flicker was also kept 30 seconds at least;
In step 506, wireless phone is initiated sign indicating number;
In step 507, the USB cordless apparatus notifies wireless phone to the sign indicating number success;
In step 508, the user dials on wireless phone;
In step 509, the wireless phone link setup of eating dishes without rice or wine, and information such as call number are sent to the USB cordless apparatus;
In step 510, the USB cordless apparatus is with information such as call number notice home gateway;
In step 511, home gateway connects to sip server by Session Initiation Protocol, and dialing information is issued sip server;
In step 512, the ring of notice opposite end phone;
In step 513, sip server notice home gateway opposite end phone is off-hook;
In step 514, voice channel is set up in order;
In step 515, home gateway is confirmed to sip server report off-hook;
In step 516, set up voice channel, both call sides carries out voice communication.
Fig. 6 illustrates among the present invention local on-hook flow chart behind the end of calling, may further comprise the steps:
In step 601, when calling both sides was in talking state, local call finished, on-hook;
In step 602, send the local notice of on-hook to the opposite end;
In step 603, home gateway is by Session Initiation Protocol and the opposite end on-hook of sip server notice;
In step 604, the on-hook of sip server notice home gateway is confirmed;
In step 605, notify local USB cordless apparatus and wireless phone to discharge voice channel.
In method flow of the present invention, can also may further comprise the steps, i.e. remote transmission operation is obtained literal and/or pictorial information by described home gateway, and the air interface that provides by described USB cordless apparatus is sent to described wireless phone.
In addition, can also may further comprise the steps: the VOIP business that detects and change described home gateway operation by described business platform.Thus, realize manageable VOIP speech business.Such as, revise the VOIP service parameter of described home gateway by described business platform; Control described home gateway by described business platform and delete described wireless application module, VOIP service parameter, the driving of USB cordless apparatus, and then cancel the VOIP service.
The foregoing description only is that the present invention will be described, should not understand limitation of the present invention, and any modification or distortion based on this all should cover within the protection range of this claim.
Claims (11)
1. method that realizes the VOIP voice is applied to realize the system of VOIP voice, and described system comprises business platform, home gateway, USB cordless apparatus, wireless phone and sip server, said method comprising the steps of:
Load wireless application module and the driving of USB cordless apparatus by described business platform to described home gateway, configuration VOIP service parameter;
Described USB cordless apparatus and described wireless phone are initiated to sign indicating number and to the sign indicating number success;
Setting up described wireless phone is connected with the VOIP audio call of terminal called;
Send cordless data from described wireless phone to described USB cordless apparatus;
From described cordless data, isolate speech data and signaling by described USB cordless apparatus, described speech data is carried out sending to described home gateway after voice signal is handled;
According to described VOIP service parameter, on described home gateway, described language data process is become the VOIP data message, and send to described terminal called by described sip server.
2. realize the method for VOIP voice according to claim 1, wherein, set up described wireless phone and the operation that the VOIP audio call of terminal called is connected, may further comprise the steps:
When making a call, the described wireless phone link setup of eating dishes without rice or wine sends to described USB cordless apparatus with call number information;
Described USB cordless apparatus sends to described home gateway with described call number information;
Connect by described home gateway and described sip server, and send described call number information to it;
When described terminal called was accepted described calling, described SIP notified described home gateway to set up voice channel;
Set up described voice channel, both call sides carries out voice communication.
3. realize the method for VOIP voice as claimed in claim 1 or 2, wherein, further comprising the steps of:
Obtain literal and/or pictorial information by described home gateway, the air interface that provides by described USB cordless apparatus is sent to described wireless phone.
4. realize the method for VOIP voice as claimed in claim 1 or 2, wherein, further comprising the steps of: the VOIP business that detects and change described home gateway operation by described business platform.
5. system that realizes the VOIP voice comprises:
Business platform loads wireless application module and the driving of USB cordless apparatus to home gateway, configuration VOIP service parameter;
The USB cordless apparatus is initiated to sign indicating number and to the sign indicating number success to wireless phone; From cordless data, isolate speech data and signaling, described speech data is carried out sending to described home gateway after voice signal is handled;
Wireless phone, foundation is connected with the VOIP audio call of terminal called, and sends described cordless data to described USB cordless apparatus;
Home gateway according to described VOIP service parameter, becomes the VOIP data message with described language data process, and sends to sip server;
Sip server sends to described terminal called with described VOIP data message.
6. as realizing the system of VOIP voice as described in the claim 5, wherein, described home gateway comprises:
Device driver module moves described USB cordless apparatus and drives, and drives the encoding and decoding of described USB cordless apparatus support voice, and the voice flow that will eat dishes without rice or wine to transmit, protocol streams are converted to the form of wireless application module identification;
Wireless application module loads described VOIP service parameter, and the language data process that described device driver module is sent becomes the VOIP data message and sends to the Session Initiation Protocol module;
The Session Initiation Protocol module is finished session foundation with described sip server is interconnected, and is transmitted described VOIP data message.
7. as realizing the system of VOIP voice as described in claim 5 or 6, wherein, described USB cordless apparatus comprises:
Radio-frequency module receives aerial cordless data, and described cordless data is delivered baseband module;
Baseband module is isolated speech data and signaling from described cordless data, described speech data is sent to the encoding and decoding speech module, and described signaling is sent to control module;
The encoding and decoding speech module carries out sending to described home gateway after voice signal is handled to described speech data;
Control module is handled described signaling, manages and shows described USB cordless apparatus current state.
8. as realizing the system of VOIP voice as described in claim 5 or 6, wherein, described home gateway obtains literal and/or pictorial information, and the air interface that provides by described USB cordless apparatus is sent to described wireless phone.
9. as realizing the system of VOIP voice as described in claim 5 or 6, wherein, described business platform also detects and changes the VOIP business of described home gateway operation.
10. home gateway that is used to realize the VOIP voice comprises:
Device driver module moves described USB cordless apparatus and drives, and drives the encoding and decoding of described USB cordless apparatus support voice, and the voice flow that will eat dishes without rice or wine to transmit, protocol streams are converted to the form of wireless application module identification;
Wireless application module loads described VOIP service parameter, and the language data process that described device driver module is sent becomes the VOIP data message and sends to the Session Initiation Protocol module;
The Session Initiation Protocol module is finished session foundation with described sip server is interconnected, and is transmitted described VOIP data message.
11. a USB cordless apparatus that is used to realize the VOIP voice comprises:
Radio-frequency module receives aerial cordless data, and described cordless data is delivered baseband module;
Baseband module is isolated speech data and signaling from described cordless data, described speech data is sent to the encoding and decoding speech module, and described signaling is sent to control module;
The encoding and decoding speech module carries out sending to described home gateway after voice signal is handled to described speech data;
Control module is handled described signaling, manages and shows described USB cordless apparatus current state.
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| CN2008101917915A CN101478617B (en) | 2008-12-31 | 2008-12-31 | Method, system, household gateway and USB wireless device for implementing VOIP voice |
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| CN2008101917915A CN101478617B (en) | 2008-12-31 | 2008-12-31 | Method, system, household gateway and USB wireless device for implementing VOIP voice |
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| CN101478617B CN101478617B (en) | 2012-01-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299962A (en) * | 2011-08-24 | 2011-12-28 | 中兴通讯股份有限公司 | Cloud-based Voice over Internet Protocol (VoIP) system, device and method |
| CN103188250A (en) * | 2011-12-31 | 2013-07-03 | 北京大唐高鸿软件技术有限公司 | Terminal device state notification and control method based on session initiation protocol (SIP) |
| CN104284035A (en) * | 2013-07-01 | 2015-01-14 | 深圳市共进电子股份有限公司 | Calling control method and device |
| CN107613123A (en) * | 2017-09-19 | 2018-01-19 | 上海市共进通信技术有限公司 | The system and method for wireless telephone function is realized based on WIFI |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783855A (en) * | 2004-11-30 | 2006-06-07 | 中国科学院声学研究所 | General gate for supporting various terminal and communication method between gate and terminal |
| CN100581204C (en) * | 2006-09-14 | 2010-01-13 | 杭州华三通信技术有限公司 | Voice gateway and method for constructing special link from voice gateway |
| CN101159720A (en) * | 2007-10-19 | 2008-04-09 | 中兴通讯股份有限公司 | Wireless IP gateway, wireless IP telephone system and VOIP call implementing method |
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2008
- 2008-12-31 CN CN2008101917915A patent/CN101478617B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299962A (en) * | 2011-08-24 | 2011-12-28 | 中兴通讯股份有限公司 | Cloud-based Voice over Internet Protocol (VoIP) system, device and method |
| CN102299962B (en) * | 2011-08-24 | 2018-03-13 | 中兴通讯股份有限公司 | A kind of VoIP system based on cloud service, apparatus and method |
| CN103188250A (en) * | 2011-12-31 | 2013-07-03 | 北京大唐高鸿软件技术有限公司 | Terminal device state notification and control method based on session initiation protocol (SIP) |
| CN104284035A (en) * | 2013-07-01 | 2015-01-14 | 深圳市共进电子股份有限公司 | Calling control method and device |
| CN104284035B (en) * | 2013-07-01 | 2018-08-14 | 深圳市共进电子股份有限公司 | Calling-control method and device |
| CN107613123A (en) * | 2017-09-19 | 2018-01-19 | 上海市共进通信技术有限公司 | The system and method for wireless telephone function is realized based on WIFI |
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| CN101478617B (en) | 2012-01-18 |
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