CN102739605B - Method and device for improving speech communication - Google Patents
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- CN102739605B CN102739605B CN201110081738.1A CN201110081738A CN102739605B CN 102739605 B CN102739605 B CN 102739605B CN 201110081738 A CN201110081738 A CN 201110081738A CN 102739605 B CN102739605 B CN 102739605B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
- H04M7/0072—Speech codec negotiation
Abstract
The embodiment of the invention provides a method and a device for improving speech communication. The method and the device are applied to communication between a calling party and a called party, wherein the calling party is a high definition user. The method comprises the following steps: a call that the calling party initiates to the called party is established and a tandem free operation (TFO) negotiation with an opposite terminal is made; the TFO negotiation is sent successfully to the opposite terminal and the speech coding and decoding type of the calling party is switched into one consistent with that of the called party if it is judged that speech coding and decoding type of the called party is different from that of the calling party and a set first correspondence is satisfied; and the call is coded and decoded by using the switched speech coding and decoding type of the calling party and the coded and decoded call is sent to the opposite terminal. The method and the device aim to solve the technical problem of TFO negotiation failure caused by the difference between speech coding and decoding types of both communicating parties and improve communication quality.
Description
Technical field
The present invention relates to communication technical field, particularly one improves voice communication method and device.
Background technology
The appearance of broadband voice (i.e. high definition voice) technology, optimizes voice call quality.The IP speech (VoIP, Voice over IP) of the network of oneself to high definition is progressively moving by numerous enterprises always.But, because high definition VoIP adopts wideband audio encoding and decoding, the connection between the public switched telephone network (PSTN, Public Switched Telephone Network) that itself and existing employing narrowband audio are encoded is incompatible, therefore, this migration cannot be widely accepted.
At present, in the prior art, between high definition voice user, communication process is: if conversed mutually between two high definition voice users, because both sides support high definition voice, then exempt from compilation operation (TFO, TandemFree Operation) consult successfully, broadband voice frame sends out from calling party, through the base station controller (BSC of Calling Side, Base Station Controller) carry out TFO frame encapsulation process after, speech frame is sent to the BSC of callee from the BSC of calling party, the BSC of callee obtains broadband voice frame from TFO frame, again this broadband voice frame is sent to called subscriber.
In prior art, if high definition voice are all supported at communication two ends, then TFO consults ability success, namely both sides could realize high definition voice call, but, if communication two ends only have one end to support high definition voice, TFO consults unsuccessfully, high definition voice (broadband) can be switched to arrowband pulse-code modulation (PCM, Pulse CodeModulation) voice, reduce speech quality.
To in the research and practice process of prior art, the present inventor finds, in existing implementation, the encoding and decoding speech type that high definition terminal is supported is different from the code/decode type that non-high definition (such as fixed line etc.) is supported, when setting up calling, carry out TFO negotiation, if calling party's (namely supporting high definition voice) is different from the speech coding type of callee, then TFO consults unsuccessfully, high definition voice can be switched to arrowband PCM voice by base station controller, this encoding and decoding switching can cause the loss of voice quality, thus reduces the speech quality of both sides.
Summary of the invention
The embodiment of the present invention provides a kind of voice communication method and device, causes TFO to consult failed technical problem, improve speech quality to solve communicating pair because of speech coding type difference.
For solving the problems of the technologies described above, the embodiment of the present invention provides a kind of method improving voice communication, is applied to calling subscriber and communicates with called subscriber, and described calling subscriber is high definition user, and described method comprises:
Set up the calling that calling subscriber initiates to called subscriber, and carry out Tandem Free Operation TFO negotiation with opposite end;
If judge, the encoding and decoding speech type of called subscriber is different from the encoding and decoding speech type of calling subscriber, and when meeting the first corresponding relation of setting, then send TFO to consult successfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the encoding and decoding speech type consistent with called subscriber;
Utilize switch after calling subscriber encoding and decoding speech type encoding and decoding are carried out to this calling after send to opposite end
Improve a device for voice communication, be applied to calling subscriber and communicate with called subscriber, described calling subscriber is high definition user, it is characterized in that, comprising:
Set up unit, for setting up the calling that calling subscriber initiates to called subscriber;
Negotiation element, for after setting up unit foundation calling, carries out Tandem Free Operation TFO negotiation with opposite end;
Judging unit, for different in the encoding and decoding speech type of the encoding and decoding speech type from calling subscriber that judge called subscriber, and when meeting the first corresponding relation of setting, trigger transmitting element to send TFO to opposite end and consult successfully, and trigger switch unit the encoding and decoding speech type of calling subscriber is switched to the encoding and decoding speech type consistent with called subscriber;
Transmitting element, consults successfully for sending TFO to opposite end;
Switch unit, for switching to the encoding and decoding speech type consistent with called subscriber by the encoding and decoding speech type of calling subscriber;
Codec unit, sends to opposite end after carrying out encoding and decoding for utilizing the encoding and decoding speech type of the calling subscriber after switching to this calling.
In the embodiment of the present invention, when carrying out Tandem Free Operation TFO and consulting, if the base station controller of caller finds the encoding and decoding speech Type-Inconsistencies of calling and called both sides, still TFO is allowed to consult successfully, and encoding and decoding speech type is switched to the encoding and decoding speech type consistent with callee, avoid the mass loss being switched to by voice arrowband PCM voice to cause.That is, by the encoding and decoding speech of the compatible arrowband of the present embodiment, the success rate that TFO consults greatly is improved.Further, when TFO consults unsuccessfully, be switched to the encoding and decoding of arrowband, decrease the damage of encoding and decoding switching to voice quality, improve voice call quality.
Accompanying drawing explanation
A kind of flow chart improving the method for voice communication that Fig. 1 provides for the embodiment of the present invention;
A kind of flow chart that improve the application example of the method for voice communication of Fig. 2 for providing in the embodiment of the present invention;
A kind of structural representation that improve the device of voice communication of Fig. 3 for providing in the embodiment of the present invention.
Embodiment
In order to the scheme making those skilled in the art person understand the embodiment of the present invention better, below in conjunction with drawings and embodiments, the embodiment of the present invention is described in further detail.
Refer to Fig. 1, be a kind of flow chart improving the method for voice communication that the embodiment of the present invention provides, described method is applied to calling subscriber and communicates with called subscriber, and described calling subscriber is high definition user; Described method comprises:
Step 101: set up the calling that calling subscriber initiates to called subscriber, and carry out Tandem Free Operation TFO negotiation with opposite end; Wherein, opposite end can be the base station controller belonging to called subscriber.
Step 102: the encoding and decoding speech type of called subscriber is different from the encoding and decoding speech type of calling subscriber if judge, and meet the first corresponding relation of setting, then send TFO to consult successfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the encoding and decoding speech type consistent with called subscriber;
Step 103: send to opposite end after utilizing the encoding and decoding speech type of the calling subscriber after switching to carry out encoding and decoding to this calling.
Preferably, the described encoding and decoding speech type by calling subscriber switches to the encoding and decoding speech type consistent with called subscriber to be: top-quality code/decode type in the code/decode type switching to calling subscriber and called subscriber all to support the speech coding of calling subscriber.That is, the code/decode type that the encoding and decoding speech type calling subscriber switching to called subscriber consistent and called subscriber support, and top-quality code/decode type is selected from the speech coding type all supported, certainly, also can be the good code/decode type of quality, the present embodiment be restricted.
In this embodiment, the encoding and decoding speech type of described judgement called subscriber is different from the encoding and decoding speech type of calling subscriber, and when meeting the first corresponding relation of setting, then sending TFO to opposite end consults successfully, and the encoding and decoding speech type of calling subscriber is switched to the encoding and decoding speech type consistent with called subscriber, specifically comprise:
If the speech coding type of calling subscriber is: EVRC_NW or enhancing speech coding broadband EVRC_WB:
When the speech coding type of described called subscriber is: EVRC_NW, and the concrete sound type of coding that comprises of the EVRC_NW of described EVRC_NW and caller incomplete same time, then send TFO to consult successfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the Capacity Operating Point COP of EVRC_WB;
When the speech coding type of described called subscriber is: when strengthening speech coding arrowband EVRC_B, then send TFO to opposite end and consult successfully, and the encoding and decoding speech type of calling subscriber is switched to the Capacity Operating Point COP of EVRC_B.
Wherein, described first corresponding relation is the corresponding relation between the caller encoding and decoding speech type pre-set, called encoding and decoding speech type and negotiation result, wherein, in this first corresponding relation, the encoding and decoding speech type that calling subscriber and called subscriber support have at least one identical.
Preferably, described method can further include: different in the encoding and decoding speech type of the encoding and decoding speech type from calling subscriber that judge called subscriber, and when meeting the second corresponding relation of setting, then send TFO to consult unsuccessfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the Capacity Operating Point COP of EVRC_B; Specifically comprise:
If the speech coding type of calling subscriber is: EVRC_NW or EVRC_WB:
When the speech coding type of described called subscriber is: during EVRC; Then send TFO to consult unsuccessfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the COP of EVRC_B;
When the speech coding type of described called subscriber is: during public switch telephone network PSTN; Then sending TFO negotiation result to opposite end is: TFO consults unsuccessfully, and the encoding and decoding speech type of calling subscriber is switched to the COP of EVRC_B.
Wherein, described second corresponding relation is the corresponding relation between the caller encoding and decoding speech type pre-set, called encoding and decoding speech type and negotiation result.Wherein, in this second corresponding relation, the encoding and decoding speech type neither one that calling subscriber and called subscriber support is identical.
Preferably, described method can further include: the first corresponding relation of setting the encoding and decoding speech type of calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result and the second corresponding relation; And described first corresponding relation and the second corresponding relation are stored on base station controller.
Preferably, when the encoding and decoding speech type of the encoding and decoding speech type from calling subscriber that judge called subscriber is different, and when meeting the first corresponding relation or second corresponding relation of setting, described method can further include: the corresponding relation inquiring about the encoding and decoding speech type of described calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result, obtains TFO and consults success or TFO and consult failed negotiation result.
In the embodiment of the present invention, when carrying out Tandem Free Operation TFO and consulting, if the base station controller of caller finds the encoding and decoding speech Type-Inconsistencies of calling and called both sides, still TFO is allowed to consult successfully, and the encoding and decoding speech type of calling party is switched to the encoding and decoding speech type consistent with callee, avoid the mass loss being switched to by voice arrowband PCM voice to cause.That is, by the encoding and decoding speech of the compatible arrowband of the present embodiment, the success rate that TFO consults greatly is improved.
Further, when TFO consults unsuccessfully, be switched to the encoding and decoding of arrowband, decrease the damage of encoding and decoding switching to voice quality, improve voice call quality.
For the ease of the understanding of those skilled in the art, illustrate with specific embodiment below.
Embodiment 1
Also refer to Fig. 2, be a kind of flow chart improving the application example of the method for voice communication provided in the embodiment of the present invention, comprise:
Step 201: the encoding and decoding speech type of calling subscriber is that the user of EVRC_NW makes a call;
Step 202: after the base station controller of this caller receives this calling, carry out TFO negotiation with called base station controller;
Step 203: the base station controller of caller judges that whether whether the encoding and decoding speech type of called subscriber identical with the encoding and decoding speech type of caller, if different, performs step 204; If identical, perform step 205;
Step 204: if the encoding and decoding speech type of called subscriber is EVRC_WB, then TFO consults successfully, sends to called base station controller after using EVRC_WB to carry out encoding and decoding to the voice of calling subscriber;
If the encoding and decoding speech type of called subscriber is EVRC_B, then TFO consults successfully, sends to called base station controller after using EVRC_B to carry out encoding and decoding to the voice of calling subscriber;
If the encoding and decoding speech type of called subscriber is EVRC_NW, and the concrete sound type of coding that comprises of the EVRC_NW of the concrete sound type of coding that comprises of EVRC_NW and caller incomplete same time, TFO consults successfully, sends to called base station controller after using EVRC_NW to carry out encoding and decoding to the voice of calling subscriber;
Consult unsuccessfully if the encoding and decoding speech type of called subscriber is EVRC, TFO, after using EVRC_B to carry out encoding and decoding to the voice of calling subscriber, send to called base station controller;
Consult unsuccessfully if the encoding and decoding speech type of called subscriber is PSTN, TFO, after using EVRC_B to carry out encoding and decoding to the voice of calling subscriber, send to called base station controller;
Step 205: if the encoding and decoding speech type of called subscriber is also EVRC_NW, then TFO consults successfully, sends to called base station controller after using the Capacity Operating Point COP of EVRC_WB to carry out encoding and decoding to the voice of calling subscriber;
Step 206: called base station controller is decoded in the voice received, obtains broadband voice frame, and this broadband voice frame is sent to called subscriber;
Step 207: calling subscriber and called subscriber converse.
In this embodiment, the result of the encoding and decoding speech type of caller, called encoding and decoding speech type and negotiation, specifically as shown in table 1,
Table 1
Embodiment 2
The implementation procedure of this embodiment is similar to Example 1, its difference is: the encoding and decoding speech type of caller is EVRC_WB, and different from called speech coding type, and different according to called encoding and decoding speech type, shown in its result of consulting is as shown in table 2:
Table 2
In the present embodiment, if the base station controller of caller finds the encoding and decoding speech Type-Inconsistencies of calling and called both sides, still TFO is allowed to consult successfully, and encoding and decoding speech type is switched to the encoding and decoding speech type consistent with callee, avoid the mass loss being switched to by voice arrowband PCM voice to cause.And when TFO consults unsuccessfully, be switched to the encoding and decoding speech EVRC_B of arrowband, decrease the damage of encoding and decoding switching to voice quality.
Based on the implementation procedure of above-described embodiment, the embodiment of the present invention also provides a kind of device improving voice communication, and its structural representation refers to Fig. 3, and described application of installation communicates in calling subscriber with called subscriber, described calling subscriber is high definition user, described device comprises: set up unit 31, negotiation element 32, judging unit 33, transmitting element 34, switch unit 35 and codec unit 36, wherein, describedly unit 31 is set up, for setting up the calling that calling subscriber initiates to called subscriber; Described negotiation element 32, for after setting up unit foundation calling, carries out Tandem Free Operation TFO negotiation with opposite end; Described judging unit 33, for different in the encoding and decoding speech type of the encoding and decoding speech type from calling subscriber that judge called subscriber, and when meeting the first corresponding relation of setting, trigger transmitting element 34 to send TFO to opposite end and consult successfully, and trigger switch unit 35 the encoding and decoding speech type of calling subscriber is switched to the encoding and decoding speech type consistent with called subscriber; Described transmitting element 34, consults successfully for sending TFO to opposite end; Described switch unit 35, for switching to the encoding and decoding speech type consistent with called subscriber by the encoding and decoding speech type of calling subscriber; Codec unit 36, sends to opposite end after carrying out encoding and decoding for utilizing the encoding and decoding speech type of the calling subscriber after switching to this calling.
Preferably, the encoding and decoding speech type of calling subscriber switches to the encoding and decoding speech type consistent with called subscriber to be by described switch unit 35: top-quality code/decode type in the code/decode type switch to calling subscriber and called subscriber all to support the encoding and decoding speech type of calling subscriber.
Preferably, described judging unit 33, also for different in the encoding and decoding speech type of the encoding and decoding speech type from calling subscriber that judge called subscriber, and when meeting the second corresponding relation of setting, trigger transmitting element to consult unsuccessfully to opposite end transmission TFO, and trigger the Capacity Operating Point COP that the encoding and decoding speech type of calling subscriber is switched to EVRC_B by switch unit;
Described transmitting element 34, also consults unsuccessfully for sending TFO to opposite end;
Described switch unit 35, also for the encoding and decoding speech type of calling subscriber being switched to the Capacity Operating Point COP of EVRC_B.
In this embodiment, when the encoding and decoding speech type of caller is EVRC_NW or EVRC_WB, called encoding and decoding speech type is EVRC_NW, and the concrete sound type of coding that the EVRC_NW of described EVRC_NW and caller comprises is incomplete same, EVRC_B, EVRC or PSTN etc., meet the first corresponding relation; When the encoding and decoding speech type of caller is EVRC_NW or EVRC_WB, called encoding and decoding speech type is EVRC, EVRC_B or PSTN, meets the second corresponding relation.
Preferably, described device can further include: memory cell, for storing the first corresponding relation of the encoding and decoding speech type of calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result, in described first corresponding relation, the encoding and decoding speech type that calling subscriber and called subscriber support have at least one identical; And/or store the second corresponding relation of the encoding and decoding speech type of calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result, wherein, in described second corresponding relation, the encoding and decoding speech type neither one that calling subscriber and called subscriber support is identical.
Preferably, described device can also only to comprise: query unit, for different in the encoding and decoding speech type of the encoding and decoding speech type from calling subscriber that judge called subscriber, and when meeting the first corresponding relation or second corresponding relation of setting, inquire about the corresponding relation of the encoding and decoding speech type of described calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result, obtain TFO and consult success or TFO and consult failed negotiation result.
Preferably, described device can be base station controller, also can be integrated in the base station controller of caller, also can be integrated in called base station controller, and also can independent part affix one's name in a network, the present embodiment does not limit.
In the embodiment of the present invention, when carrying out Tandem Free Operation TFO and consulting, if the base station controller of caller finds the encoding and decoding speech Type-Inconsistencies of calling and called both sides, still TFO is allowed to consult successfully, and encoding and decoding speech type is switched to the encoding and decoding speech type consistent with callee, avoid the mass loss being switched to by voice arrowband PCM voice to cause.That is, by the encoding and decoding speech of the compatible arrowband of the present embodiment, the success rate that TFO consults greatly is improved.Further, when TFO consults unsuccessfully, be switched to the encoding and decoding of arrowband, decrease the damage of encoding and decoding switching to voice quality, improve voice call quality.
Also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the present invention or embodiment.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. improve a method for voice communication, be applied to calling subscriber and communicate with called subscriber, described calling subscriber is high definition user, it is characterized in that, comprising:
Set up the calling that calling subscriber initiates to called subscriber, and carry out Tandem Free Operation TFO negotiation with opposite end;
If judge, the encoding and decoding speech type of called subscriber is different from the encoding and decoding speech type of calling subscriber, and when meeting the first corresponding relation of setting, then send TFO to consult successfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the encoding and decoding speech type consistent with called subscriber;
If judge, the encoding and decoding speech type of called subscriber is different from the encoding and decoding speech type of calling subscriber, and when meeting the second corresponding relation of setting, then send TFO to consult unsuccessfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the Capacity Operating Point COP of EVRC_B;
Opposite end is sent to after utilizing the encoding and decoding speech type of the calling subscriber after switching to carry out encoding and decoding to this calling.
2. method according to claim 1, it is characterized in that, the described encoding and decoding speech type by calling subscriber switches to the encoding and decoding speech type consistent with called subscriber to be: top-quality code/decode type in the code/decode type switching to calling subscriber and called subscriber all to support the speech coding of calling subscriber.
3. method according to claim 2, it is characterized in that, the encoding and decoding speech type of described judgement called subscriber is different from the encoding and decoding speech type of calling subscriber, and meet the first corresponding relation of setting, then sending TFO to opposite end consults successfully, and the encoding and decoding speech type of calling subscriber is switched to the encoding and decoding speech type consistent with called subscriber, comprising:
If the speech coding type of calling subscriber is: EVRC_NW or enhancing speech coding broadband EVRC_WB:
When the speech coding type of described called subscriber is: EVRC_NW, and the speech coding type that comprises of the EVRC_NW of described EVRC_NW and caller incomplete same time, then send TFO to consult successfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the Capacity Operating Point COP of EVRC_WB;
When the speech coding type of described called subscriber is: when strengthening speech coding arrowband EVRC_B, then send TFO to opposite end and consult successfully, and the encoding and decoding speech type of calling subscriber is switched to the Capacity Operating Point COP of EVRC_B.
4. method according to claim 1, it is characterized in that, the encoding and decoding speech type of described encoding and decoding speech type from calling subscriber judging called subscriber is different, and when meeting the second corresponding relation of setting, sending TFO to opposite end consults unsuccessfully, and the encoding and decoding speech type of calling subscriber is switched to the Capacity Operating Point COP of EVRC_B, comprising:
If the speech coding type of calling subscriber is: EVRC_NW or EVRC_WB:
When the speech coding type of described called subscriber is: during EVRC; Then send TFO to consult unsuccessfully to opposite end, and the encoding and decoding speech type of calling subscriber is switched to the COP of EVRC_B;
When the speech coding type of described called subscriber is: during public switch telephone network PSTN; Then sending TFO negotiation result to opposite end is: TFO consults unsuccessfully, and the encoding and decoding speech type of calling subscriber is switched to the COP of EVRC_B.
5. the method according to any one of claims 1 to 3, is characterized in that, described method also comprises:
Store the first corresponding relation of the encoding and decoding speech type of calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result, wherein, in described first corresponding relation, the encoding and decoding speech type that calling subscriber and called subscriber support have at least one identical.
6. the method according to any one of Claims 1-4, is characterized in that, described method also comprises:
Store the second corresponding relation of the encoding and decoding speech type of calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result, wherein, in described second corresponding relation, the encoding and decoding speech type neither one that calling subscriber and called subscriber support is identical.
7. improve a device for voice communication, be applied to calling subscriber and communicate with called subscriber, described calling subscriber is high definition user, it is characterized in that, comprising:
Set up unit, for setting up the calling that calling subscriber initiates to called subscriber;
Negotiation element, for after setting up unit foundation calling, carries out Tandem Free Operation TFO negotiation with opposite end;
Judging unit, for different in the encoding and decoding speech type of the encoding and decoding speech type from calling subscriber that judge called subscriber, and when meeting the first corresponding relation of setting, trigger transmitting element to send TFO to opposite end and consult successfully, and trigger switch unit the encoding and decoding speech type of calling subscriber is switched to the encoding and decoding speech type consistent with called subscriber;
Transmitting element, consults successfully for sending TFO to opposite end;
Switch unit, for switching to the encoding and decoding speech type consistent with called subscriber by the encoding and decoding speech type of calling subscriber;
Described judging unit, also for different in the encoding and decoding speech type of the encoding and decoding speech type from calling subscriber that judge called subscriber, and when meeting the second corresponding relation of setting, trigger transmitting element to consult unsuccessfully to opposite end transmission TFO, and trigger the Capacity Operating Point COP that the encoding and decoding speech type of calling subscriber is switched to EVRC_B by switch unit;
Described transmitting element, also consults unsuccessfully for sending TFO to opposite end;
Described switch unit, also for the encoding and decoding speech type of calling subscriber being switched to the Capacity Operating Point COP of EVRC_B;
Codec unit, sends to opposite end after carrying out encoding and decoding for utilizing the speech coding type of the calling subscriber after switching to this calling.
8. device according to claim 7, it is characterized in that, the encoding and decoding speech type of calling subscriber switches to the encoding and decoding speech type consistent with called subscriber to be by described switch unit: top-quality code/decode type in the code/decode type switch to calling subscriber and called subscriber all to support the encoding and decoding speech type of calling subscriber.
9. the device according to any one of claim 7 to 8, is characterized in that, also comprises:
Memory cell, for storing the first corresponding relation of the encoding and decoding speech type of calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result; Wherein, in described first corresponding relation, the encoding and decoding speech type that calling subscriber and called subscriber support have at least one identical; And/or, for storing the first corresponding relation and second corresponding relation of the encoding and decoding speech type of calling subscriber, the encoding and decoding speech type of called subscriber and TFO negotiation result; Wherein, in described second corresponding relation, the encoding and decoding speech type neither one that calling subscriber and called subscriber support is identical.
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| CN201110081738.1A CN102739605B (en) | 2011-03-31 | 2011-03-31 | Method and device for improving speech communication |
| PCT/CN2012/071981 WO2012130023A1 (en) | 2011-03-31 | 2012-03-06 | Method and device for improving voice communication |
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| CN201110081738.1A CN102739605B (en) | 2011-03-31 | 2011-03-31 | Method and device for improving speech communication |
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| WO2014205821A1 (en) * | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | Method, apparatus and system for voice communication |
| CN104424951B (en) * | 2013-08-19 | 2018-03-20 | 中国电信股份有限公司 | A kind of different systems TFO and the method and apparatus of TrFO intercommunications conversion |
| CN107018537B (en) * | 2017-03-30 | 2020-03-17 | 努比亚技术有限公司 | Voice communication method and device |
| CN108521400B (en) * | 2018-03-05 | 2020-09-22 | 厦门亿联网络技术股份有限公司 | Codec self-adaptive method for delayed backoff |
| CN116708675A (en) * | 2022-11-17 | 2023-09-05 | 荣耀终端有限公司 | Conversation method and electronic equipment |
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| CN101742560A (en) * | 2009-11-20 | 2010-06-16 | 华为技术有限公司 | Data transmission method, data transmission device and network system |
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| CN102739605A (en) | 2012-10-17 |
| WO2012130023A1 (en) | 2012-10-04 |
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