CN101605357B - Method for accessing public switched telephone network by wireless network device and wireless network device - Google Patents
Method for accessing public switched telephone network by wireless network device and wireless network device Download PDFInfo
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- CN101605357B CN101605357B CN200910088059XA CN200910088059A CN101605357B CN 101605357 B CN101605357 B CN 101605357B CN 200910088059X A CN200910088059X A CN 200910088059XA CN 200910088059 A CN200910088059 A CN 200910088059A CN 101605357 B CN101605357 B CN 101605357B
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Abstract
The invention discloses a method for accessing a public switched telephone network by a wireless network device and the wireless network device. The wireless network device is connected with a wireless Modem which accesses a CS domain of an IP carrying network in a wireless mode; and the IP carrying network is connected with a PSTN. The wireless network device comprises a call control unit and a media stream control unit; and the method comprises that: the call control unit interacts a VOIP signal with an IP voice protocol unit in the wireless network device for VOIP voice call control, and interacts an AT command with the wireless Modem for CS domain voice call control; and when a call between a local user and a PSTN user is successfully established, the media stream control unit is informed to open a media channel between the IP voice protocol unit and the wireless Modem. The method realizes that the wireless network device access the PSTN through a mobile communication network.
Description
Technical field
The present invention relates to the radio network technique field, be specifically related to the method and the Wireless Communication Equipment of Wireless Communication Equipment accessing public switched telephone network.
Background technology
Mobile communication modulator-demodulator (Modem) is called wireless Internet card again; With common global system for mobile communications (GSM; Global System for Mobile Communications), GPRS (GPRS; General Packet Radio Service) or the functional similarity of code division multiple access (CDMA, CodeDivision Multiple Address) portable terminal, all data transmission services such as support voice, note, video; Just do not have screen and keyboard, more stress wireless data transmission function.The network equipment of inner integrated wireless Modem or through USB (USB; Universal Serial BUS) etc. the network equipment of the external wireless Modem of interface is commonly referred to Wireless Communication Equipment, and this Wireless Communication Equipment can be linked in the mobile communications network through wireless Modem.Wireless Communication Equipment all is the network access equipment as user side in practical application, is used for family, enterprise, outlying district and is linked into IP network, and is as shown in Figure 1.
Along with the upgrading of mobile communications network, network equipment major part has all possessed the function of supporting that wireless Modem IP inserts.In practical application; The function that many customer requirements Wireless Communication Equipment support voice are called out: the inner user of local area network (LAN) for example: the phone software that moves on the personal computer can either be realized ip voice (VOIP through IP network; Voice Over IP) calls out; Can pass through public switch telephone network (PSTN, Public Switched Telephone Network) again and realize ordinary call.
Fig. 2 is the networking diagram that existing Wireless Communication Equipment inserts PSTN; As shown in Figure 2; On Wireless Communication Equipment, increase FXO (FXO, Foreign Exchange Office) interface, and between Wireless Communication Equipment and PSTN network, lay analog phone line; Wireless Communication Equipment inserts the PSTN network through the FXO interface, to realize analog voice call.
Can find out from scheme shown in Figure 2,, increase the FXO interface on the Wireless Communication Equipment and needed and laid analog phone line, not utilize and the phonetic function of wireless Modem is idle in order to insert PSTN.This has increased the cost of Wireless Communication Equipment undoubtedly, has wasted the voice communication resource of wireless Modem.And, be inconvenient to dispose the regional network user of analog line and can't use this scheme to insert PSTN.
Summary of the invention
Method and Wireless Communication Equipment that the present invention provides Wireless Communication Equipment to insert PSTN insert PSTN to realize Wireless Communication Equipment through mobile communications network.
Technical scheme of the present invention is achieved in that
A kind of Wireless Communication Equipment that inserts PSTN, this Wireless Communication Equipment links to each other with radio modem Modem, and wireless Modem inserts the CS territory of IP bearer network with wireless mode, and the IP bearer network links to each other with PSTN, and this Wireless Communication Equipment comprises:
Call Control Unit carries out the VOIP voice call control with the mutual VOIP signaling of the ip voice protocol element in this equipment, carries out CS territory voice call control with the mutual AT order of wireless Modem; When the access success between discovery local user and PSTN user is set up, open the media channel order to the media stream control unit transmission; When finding end of calling, close the media channel order to the media stream control unit transmission;
Media stream control unit opens or closes media channel order according to what Call Control Unit was sent, opens or closes the media channel between ip voice protocol element and wireless Modem.
Said Call Control Unit comprises:
Control unit carries out the VOIP voice call control with the mutual VOIP signaling of ip voice protocol element; When needs when wireless Modem issues CS territory voice call control signaling, this call control signalling is handed down to AT order structural unit; Receive the call control signalling that the AT command resolution unit is sent; When the access success between discovery local user and PSTN user is set up, open the media channel order to the media stream control unit transmission; When finding end of calling, close the media channel order to the media stream control unit transmission;
AT orders structural unit, and the call control signalling that control unit is sent converts the AT order that wireless Modem can be discerned into, and this AT order is handed down to wireless Modem;
The AT command resolution unit receives the AT order that wireless Modem reports, and this AT order is resolved, and the call control signalling that parsing is obtained reports control unit.
A kind of Wireless Communication Equipment inserts the method for PSTN; This Wireless Communication Equipment links to each other with wireless Modem; And wireless Modem inserts the CS territory of IP bearer network with wireless mode; The IP bearer network links to each other with PSTN, and this Wireless Communication Equipment comprises Call Control Unit and media stream control unit, and this method comprises:
The inner mutual VOIP signaling of ip voice protocol element of Call Control Unit and Wireless Communication Equipment is carried out the VOIP voice call control, carries out CS territory voice call control with the mutual AT order of wireless Modem; When the access success between discovery local user and PSTN user was set up, the notice media stream control unit was opened the media channel between ip voice protocol element and wireless Modem.
The inner mutual VOIP signaling of ip voice protocol element of said Call Control Unit and Wireless Communication Equipment is carried out the VOIP voice call control, carries out CS territory voice call control with the mutual AT order of wireless Modem and comprises:
Ip voice protocol element finds that the local user makes a call to PSTN user, sends call setup message to Call Control Unit; Call Control Unit receives this message, issues AT dialing order to wireless Modem;
Said when the access success between discovery local user and PSTN user is set up, the media channel that the notice media stream control unit is opened between ip voice protocol element and wireless Modem is:
When receiving the AT order of the called off-hook of indication that wireless Modem reports, the notice media stream control unit is opened the media channel between ip voice protocol element and wireless Modem.
Said Call Control Unit receives after this message, before wireless Modem issues AT dialing order, further comprises:
Whether whether Call Control Unit inspection called number is legal, whether the inspection wireless Modem supports this to call out the speech parameter of employing, issue AT to wireless Modem is ordered inquiry CS territory network state normal; If all for being; Whether then issue AT to wireless Modem orders inquiry CS territory audio call idle; If idle, then carry out the said action that issues AT dialing order to wireless Modem; Otherwise, remove this calling.
Said Call Control Unit after wireless Modem issues AT dialing order, receive before the AT order of the called off-hook of indication that wireless Modem reports, further comprise:
Call Control Unit receives the connection message that wireless Modem returns, and the notice media stream control unit is opened by wireless Modem to the media channel ip voice protocol element, and the ring-back tone of PSTN side broadcast is passed through ip voice protocol element.
The inner mutual VOIP signaling of ip voice protocol element of said Call Control Unit and Wireless Communication Equipment is carried out the VOIP voice call control, carries out CS territory voice call control with the mutual AT order of wireless Modem and comprises:
Wireless Modem receives from the PSTN user calling, sends the ring order to Call Control Unit; Call Control Unit receives this ring order, reports the call setup message that carries calling number to ip voice protocol element;
Said when the access success between discovery local user and PSTN user is set up, the media channel that the notice media stream control unit is opened between ip voice protocol element and wireless Modem is:
When receiving access success that ip voice protocol element returns when setting up message, the notice media stream control unit is opened the media channel between ip voice protocol element and wireless Modem.
Said Call Control Unit receives after the ring order, before ip voice protocol element reports call setup message, further comprises:
Call Control Unit issues the order of AT off-hook to wireless Modem; And issue AT order that is used for inquiring calling number, this speech parameter that call out to adopt to wireless Modem, and the notice media stream control unit is opened media channel and is issued secondary dial tone prompting PSTN side user to wireless Modem and carry out recall.
Said Call Control Unit notice media stream control unit is opened media channel after wireless Modem issues secondary dial tone, before ip voice protocol element reports call setup message, further comprise:
Call Control Unit judges whether in scheduled duration, to receive the dual tone multi-frequency dtmf order that wireless Modem reports; If; The notice media stream control unit stops to play dialing tone to wireless Modem; Continue to wait for that wireless Modem reports the DTMF order, and when receiving end DTMF order, carry out the said action that reports call setup message to ip voice protocol element; Otherwise the notice media stream control unit stops to play dialing tone, beginning to play busy tone to wireless Modem to wireless Modem.
Said Call Control Unit notice media stream control unit further comprises after opening the media channel between ip voice protocol element and wireless Modem:
Call Control Unit receives the call tear down message from ip voice protocol element, issues AT on-hook order to wireless Modem, and the notice media stream control unit is closed all media channels between ip voice protocol element and wireless Modem;
Perhaps, the AT order of the indication Called Onhook that Call Control Unit reception wireless Modem reports reports call tear down message to ip voice protocol element, and the notice media stream control unit is closed all media channels between ip voice protocol element and wireless Modem.
Compared with prior art; The present invention is under the prerequisite that does not increase the Wireless Communication Equipment physical interface; Make local area network users set up audio call through wireless Modem with PSTN user; And occur under the situation unusual, that can't set up based on the VOIP calling of IP agreement at network equipment wan interface, local area network users can insert PSTN through wireless Modem and realize voice call backup; And, reduced the cost of Wireless Communication Equipment, reduced the workload of beginning wiring, and made and be inconvenient to dispose the regional network user of analog line and can inserts PSTN, saved the wiring cost of analog line simultaneously.
Description of drawings
Fig. 1 is existing Wireless Communication Equipment inserts IP network through wireless Modem a networking diagram;
Fig. 2 is the networking diagram that existing Wireless Communication Equipment inserts PSTN;
The Wireless Communication Equipment that Fig. 3 provides for the embodiment of the invention inserts the networking diagram of PSTN;
The composition diagram of the Wireless Communication Equipment that Fig. 4 provides for the embodiment of the invention;
The composition diagram of the Call Control Unit that Fig. 5 provides for the embodiment of the invention;
The interior user A of local area network (LAN) that Fig. 6 provides for the embodiment of the invention calls out the flow chart of PSTN user B;
The PSTN user B that Fig. 7 provides for the embodiment of the invention calls out the flow chart of user A in the local area network (LAN).
Embodiment
Because wireless Modem support voice communication function; Therefore, among the present invention, Wireless Communication Equipment utilizes AT order control wireless Modem to carry out circuit switching (CS; Circuit Switch) audio call in territory, promptly the user in the local area network (LAN) inserts PSTN through wireless Modem and realizes local voice calls.
The Wireless Communication Equipment that Fig. 3 provides for the embodiment of the invention inserts the networking diagram of PSTN; As shown in Figure 3; Wireless Communication Equipment links to each other through existing physical interface with wireless Modem; Link to each other through wireless mode between wireless Modem and the mobile telecommunication in IP bearer network, the mobile telecommunication in IP bearer network links to each other with PSTN with the internet respectively.Wherein, Packet data streams is through the packet switching (PS of wireless access; Packet Switch) the territory transmission is entered the Internet to realize Wireless Communication Equipment, and ip voice stream and call control signalling insert PSTN through the CS territory transmission of wireless access to realize Wireless Communication Equipment.
Because existing ip voice protocol element realizes the control of VOIP voice signaling in the Wireless Communication Equipment, as: create, revise, discharge VOIP session etc.Among the present invention, existing ip voice protocol element and wireless Modem physical layer processing unit in the Wireless Communication Equipment are connected, make ip voice stream connect PSTN through wireless Modem.Particularly, as shown in Figure 4, the present invention increases Call Control Unit 41 and realizes that with media stream control unit 42 Wireless Communication Equipment inserts PSTN on Wireless Communication Equipment, wherein:
Call Control Unit 41: carry out the VOIP voice call control with the mutual VOIP voice signaling of ip voice protocol element, carry out CS territory voice call control with the mutual AT order of wireless Modem physical layer processing unit; When the access success between discovery local user and PSTN user is set up, open the media channel order to media stream control unit 42 transmissions; When finding end of calling, close the media channel order to media stream control unit 42 transmissions.
Media stream control unit 42: open or close media channel order according to what Call Control Unit 41 was sent, open or close the media channel between ip voice protocol element and wireless Modem.
As shown in Figure 4, media channel comprises:
Media channel M1:, will directly be transmitted to the wireless Modem physical layer processing unit from the voice flow of this passage usually from media channel M3 by the passage of ip voice protocol element to media stream control unit 42 transferring voices stream.
Media channel M2:, will be transmitted to ip voice protocol element from this passage from the voice flow of media channel M4 usually by the passage of media stream control unit 42 to ip voice protocol element transferring voice stream.
Media channel M3: by the passage of media stream control unit 42 to wireless Modem physical layer processing unit transferring voice stream; This passage is transmitted the voice flow from ip voice protocol element, the signal tone that can also media stream control unit 42 be produced simultaneously as: dialing tone, busy tone etc. sends to the wireless Modem physical layer processing unit.
Media channel M4: by the passage of wireless Modem physical layer processing unit to media stream control unit 42 transferring voices stream, this passage is generally used for receiving the voice flow that wireless Modem reports.
It is thus clear that Call Control Unit 41 is interfaces of ip voice protocol element and wireless Modem physical layer processing unit, control whole calling procedure.Call Control Unit 41 provides a transparent PSTN outlet for ip voice protocol element, accomplishes the VOIP audio call for ip voice protocol element a platform is provided; Simultaneously Call Control Unit 41 unit controls wireless Modems are accomplished CS territory audio call, and control media stream control unit 42 is opened and closed corresponding media channel.
As shown in Figure 5, Call Control Unit 41 can comprise: control unit 411, AT order structural unit 412 and AT command resolution unit 413, wherein:
Control unit 411: carry out the VOIP voice call control with the mutual VOIP voice signaling of ip voice protocol element; When needs when wireless Modem issues CS territory voice call control signaling, this call control signalling is handed down to AT order structural unit 412; Receive the call control signalling that AT command resolution unit 413 is sent; When the access success between discovery local user and PSTN user is set up, open the media channel order to media stream control unit 42 transmissions; When finding end of calling, close the media channel order to media stream control unit 42 transmissions.
AT orders structural unit 412: the call control signalling that control unit 411 is sent converts the AT order that wireless Modem can be discerned into, and this AT order is handed down to the wireless Modem physical layer processing unit.
AT command resolution unit 413: receive the AT order that the wireless Modem physical layer processing unit reports, this AT order is resolved, the call control signalling that parsing is obtained reports control unit 411.
The interior user A of local area network (LAN) that Fig. 6 provides for the embodiment of the invention calls out the flow chart of PSTN user B, and as shown in Figure 6, its concrete steps are following:
Step 601:IP voice protocol unit detects LAN subscriber A and makes a call to PSTN user B; Send call setup (SETUP) message to Call Control Unit, this message is carried called number promptly: PSTN user B number, this calls out the speech parameter that adopts like encoding and decoding agreement, packaging time length, sampling period etc.
Step 602: whether the called number in the Call Control Unit inspection SETUP message is legal; This that check simultaneously whether wireless Modem support to carry in the SETUP message called out the speech parameter that adopts; Whether and it is normal to issue AT order inquiry CS territory network state to wireless Modem; If all be that then execution in step 604; Otherwise, execution in step 603.
Step 603: Call Control Unit returns called unreachable (ServiceUnavailable) message to ip voice protocol element, removes this calling, and this flow process finishes.
Step 604: Call Control Unit issues AT order inquiry CS territory audio call state to wireless Modem.
Step 605: Call Control Unit receives the CS territory audio call state that wireless Modem returns, and judges whether this state indicates CS territory audio call idle, if, execution in step 607; Otherwise, execution in step 606.
Step 606: Call Control Unit returns Called Busy (BUSY) message to ip voice protocol element, removes this calling, and this flow process finishes.
Step 607: Call Control Unit issues the AT dialing order of carrying called number to wireless Modem.
Step 608: Call Control Unit is received connection (CONNECT) message that wireless Modem returns in scheduled duration; Return OK message to ip voice protocol element; The notice media stream control unit is opened media channel M2 and M4, so that the ring-back tone that the PSTN side is play passes through ip voice protocol element.
At this moment, the calling subscriber can hear ring-back tone.
If Call Control Unit is not received the CONNECT message that wireless Modem returns in scheduled duration, then return step 606.
Step 609: Call Control Unit listens to the called off-hook order that wireless Modem reports, and the notice media stream control unit is opened media channel M1 and M3, and conversation is normally set up.
Step 610: Call Control Unit listens to the Called Onhook order that wireless Modem reports, and reports call tear down (RELEASE) message to ip voice protocol element, and the notice media stream control unit is closed all media channels, this end of conversation; Perhaps, Call Control Unit listens to the RELEASE message that ip voice protocol element issues, and issues AT on-hook order to wireless Modem, and the notice media stream control unit is closed all media channels, this end of conversation.
The PSTN user B that Fig. 7 provides for the embodiment of the invention calls out the flow chart of user A in the local area network (LAN), and as shown in Figure 7, its concrete steps are following:
Step 701: wireless Modem receives the calling that PSTN user B sends, and sends the ring order to Call Control Unit.
Step 702: Call Control Unit receives the ring order from wireless Modem, issues the order of AT off-hook to wireless Modem; Simultaneously, the calling number from this calling of AT order inquiry to wireless Modem, speech parameter that issue is like encoding and decoding agreement, packaging time length etc.
Step 703: Call Control Unit notice media stream control unit is opened media channel M3, and notifies media stream control unit to issue secondary dial tone to wireless Modem, carries out recall with prompting PSTN user B.
Because Wireless Communication Equipment is hung a plurality of users usually down; Each user's number is made up of Wireless Communication Equipment number (general number)+Subscriber Number (extension); What call out in the step 701 is Wireless Communication Equipment number (general number), and the secondary dial tone that issues in this step 703 is prompting PSTN user B input user's A number (extension).
Step 704: Call Control Unit judges whether in scheduled duration, to receive dual-tone multifrequency (DTMF, the Dual Tone Multi Frequency) order that wireless Modem reports, if, execution in step 706; Otherwise, execution in step 705.
Step 705: Call Control Unit notice media stream control unit stops to play dialing tone, beginning to play busy tone to wireless Modem to wireless Modem; And when listening to from the AT on-hook of wireless Modem order; Issue AT on-hook order to wireless Modem; The notice media stream control unit is closed the media channel of opening, this end of calling.
Step 706: Call Control Unit notice media stream control unit stops to play dialing tone to wireless Modem, continues to wait for that wireless Modem reports the DTMF order.
Because Subscriber Number is usually more than 1, each DTMF command report 1 item sign indicating number, therefore, the report of user number will be accomplished through reporting repeatedly the DTMF order usually.
Step 707: Call Control Unit receive finish the DTMF order as: " # ", report SETUP message to ip voice protocol element, this message is carried calling number, this calls out the speech parameter that adopts like encoding and decoding agreement, packaging time length, sampling period etc.
Step 708: Call Control Unit receives the OK message that ip voice protocol element is returned, and the notice media stream control unit is opened media channel M1, M2, M4, and conversation is normally set up.
Step 709: Call Control Unit listens to the RELEASE message from ip voice protocol element, and the notice media stream control unit is closed all media channels, this end of conversation; Perhaps, Call Control Unit listens to the AT on-hook order from wireless Modem, issues AT on-hook order to wireless Modem, and the notice media stream control unit is closed all media channels, this end of conversation.
The above is merely process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being made, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the Wireless Communication Equipment of an accessing public switched telephone network PSTN; This Wireless Communication Equipment links to each other with radio modem Modem; And wireless Modem inserts the circuit switching (CS) territory of IP bearer network with wireless mode; And the IP bearer network links to each other with PSTN, it is characterized in that, this Wireless Communication Equipment comprises:
Call Control Unit carries out the VOIP voice call control with the mutual ip voice VOIP of the ip voice protocol element signaling in this equipment, carries out CS territory voice call control with the mutual AT order of wireless Modem; When the access success between discovery local user and PSTN user is set up, open the media channel order to the media stream control unit transmission; When finding end of calling, close the media channel order to the media stream control unit transmission;
Media stream control unit opens or closes media channel order according to what Call Control Unit was sent, opens or closes the media channel between ip voice protocol element and wireless Modem.
2. Wireless Communication Equipment as claimed in claim 1 is characterized in that, said Call Control Unit comprises:
Control unit carries out the VOIP voice call control with the mutual VOIP signaling of ip voice protocol element; When needs when wireless Modem issues CS territory voice call control signaling, this call control signalling is handed down to AT order structural unit; Receive the call control signalling that the AT command resolution unit is sent; When the access success between discovery local user and PSTN user is set up, open the media channel order to the media stream control unit transmission; When finding end of calling, close the media channel order to the media stream control unit transmission;
AT orders structural unit, and the call control signalling that control unit is sent converts the AT order that wireless Modem can be discerned into, and this AT order is handed down to wireless Modem;
The AT command resolution unit receives the AT order that wireless Modem reports, and this AT order is resolved, and the call control signalling that parsing is obtained reports control unit.
3. a Wireless Communication Equipment inserts the method for PSTN; This Wireless Communication Equipment links to each other with wireless Modem; And wireless Modem is with the CS territory of wireless mode access IP bearer network, and the IP bearer network links to each other with PSTN, it is characterized in that; This Wireless Communication Equipment comprises Call Control Unit and media stream control unit, and this method comprises:
The inner mutual VOIP signaling of ip voice protocol element of Call Control Unit and Wireless Communication Equipment is carried out the VOIP voice call control, carries out CS territory voice call control with the mutual AT order of wireless Modem; When the access success between discovery local user and PSTN user was set up, the notice media stream control unit was opened the media channel between ip voice protocol element and wireless Modem.
4. method as claimed in claim 3; It is characterized in that; The inner mutual VOIP signaling of ip voice protocol element of said Call Control Unit and Wireless Communication Equipment is carried out the VOIP voice call control, carries out CS territory voice call control with the mutual AT order of wireless Modem and comprises:
Ip voice protocol element finds that the local user makes a call to PSTN user, sends call setup message to Call Control Unit; Call Control Unit receives this message, issues AT dialing order to wireless Modem;
Said when the access success between discovery local user and PSTN user is set up, the media channel that the notice media stream control unit is opened between ip voice protocol element and wireless Modem is:
When receiving the AT order of the called off-hook of indication that wireless Modem reports, the notice media stream control unit is opened the media channel between ip voice protocol element and wireless Modem.
5. method as claimed in claim 4 is characterized in that, said Call Control Unit receives after this message, before wireless Modem issues AT dialing order, further comprises:
Whether whether Call Control Unit inspection called number is legal, whether the inspection wireless Modem supports this to call out the speech parameter of employing, issue AT to wireless Modem is ordered inquiry CS territory network state normal; If all for being; Whether then issue AT to wireless Modem orders inquiry CS territory audio call idle; If idle, then carry out the said action that issues AT dialing order to wireless Modem; Otherwise, remove this calling.
6. like claim 4 or 5 described methods, it is characterized in that, said Call Control Unit after wireless Modem issues AT dialing order, receive before the AT order of the called off-hook of indication that wireless Modem reports, further comprise:
Call Control Unit receives the connection message that wireless Modem returns, and the notice media stream control unit is opened by wireless Modem to the media channel ip voice protocol element, and the ring-back tone of PSTN side broadcast is passed through ip voice protocol element.
7. method as claimed in claim 3; It is characterized in that; The inner mutual VOIP signaling of ip voice protocol element of said Call Control Unit and Wireless Communication Equipment is carried out the VOIP voice call control, carries out CS territory voice call control with the mutual AT order of wireless Modem and comprises:
Wireless Modem receives from the PSTN user calling, sends the ring order to Call Control Unit; Call Control Unit receives this ring order, reports the call setup message that carries calling number to ip voice protocol element;
Said when the access success between discovery local user and PSTN user is set up, the media channel that the notice media stream control unit is opened between ip voice protocol element and wireless Modem is:
When receiving access success that ip voice protocol element returns when setting up message, the notice media stream control unit is opened the media channel between ip voice protocol element and wireless Modem.
8. method as claimed in claim 7 is characterized in that, said Call Control Unit receives after the ring order, before ip voice protocol element reports call setup message, further comprises:
Call Control Unit issues the order of AT off-hook to wireless Modem; And issue AT order that is used for inquiring calling number, this speech parameter that call out to adopt to wireless Modem, and the notice media stream control unit is opened media channel and is issued secondary dial tone prompting PSTN side user to wireless Modem and carry out recall.
9. method as claimed in claim 8; It is characterized in that said Call Control Unit notice media stream control unit is opened media channel after wireless Modem issues secondary dial tone, before ip voice protocol element reports call setup message, further comprise:
Call Control Unit judges whether in scheduled duration, to receive the dual tone multi-frequency dtmf order that wireless Modem reports; If; The notice media stream control unit stops to play dialing tone to wireless Modem; Continue to wait for that wireless Modem reports the DTMF order, and when receiving end DTMF order, carry out the said action that reports call setup message to ip voice protocol element; Otherwise the notice media stream control unit stops to play dialing tone, beginning to play busy tone to wireless Modem to wireless Modem.
10. like claim 4 or 7 described methods, it is characterized in that said Call Control Unit notice media stream control unit further comprises after opening the media channel between ip voice protocol element and wireless Modem:
Call Control Unit receives the call tear down message from ip voice protocol element, issues AT on-hook order to wireless Modem, and the notice media stream control unit is closed all media channels between ip voice protocol element and wireless Modem;
Perhaps, the AT order of the indication Called Onhook that Call Control Unit reception wireless Modem reports reports call tear down message to ip voice protocol element, and the notice media stream control unit is closed all media channels between ip voice protocol element and wireless Modem.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910088059XA CN101605357B (en) | 2009-07-01 | 2009-07-01 | Method for accessing public switched telephone network by wireless network device and wireless network device |
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| CN200910088059XA CN101605357B (en) | 2009-07-01 | 2009-07-01 | Method for accessing public switched telephone network by wireless network device and wireless network device |
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| CN101605357B true CN101605357B (en) | 2012-07-04 |
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| CN101951640B (en) * | 2010-09-16 | 2013-02-20 | 沈阳化工大学 | Industrial wireless network media access control method |
| CN108684055B (en) * | 2015-11-24 | 2021-05-04 | Oppo广东移动通信有限公司 | Method and device for processing network communication function abnormity and mobile terminal |
| CN105472649B (en) * | 2015-11-24 | 2018-05-29 | 广东欧珀移动通信有限公司 | A kind of processing method, device and the mobile terminal of network communicating function exception |
| CN109561194B (en) * | 2018-12-27 | 2021-08-06 | 深圳市新国都支付技术有限公司 | POS machine dialing method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588899A (en) * | 2004-08-04 | 2005-03-02 | 北京朗通环球科技有限公司 | Terminal cut-in control deviced and multimedia communication system based on internet protocol |
| CN201207653Y (en) * | 2008-03-04 | 2009-03-11 | 熊猫电子集团有限公司 | Wideband wireless access equipment supporting multiple access modes |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588899A (en) * | 2004-08-04 | 2005-03-02 | 北京朗通环球科技有限公司 | Terminal cut-in control deviced and multimedia communication system based on internet protocol |
| CN201207653Y (en) * | 2008-03-04 | 2009-03-11 | 熊猫电子集团有限公司 | Wideband wireless access equipment supporting multiple access modes |
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