CN104836927B - A kind of voice synchronous method and terminal - Google Patents
A kind of voice synchronous method and terminal Download PDFInfo
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- CN104836927B CN104836927B CN201510071198.7A CN201510071198A CN104836927B CN 104836927 B CN104836927 B CN 104836927B CN 201510071198 A CN201510071198 A CN 201510071198A CN 104836927 B CN104836927 B CN 104836927B
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Abstract
The invention discloses a kind of voice synchronous method and terminal, this method includes:Two terminals in initial state send synchronizing information frame to other side simultaneously;When first terminal receives the synchronizing information frame of second terminal transmission earlier than the synchronizing information frame that other side sends, first terminal such as jumps at the state to be confirmed, and to second terminal confirmation of synchronization frame, second terminal is after confirmation of synchronization frame is received, waiting voice state is jumped to, speech frame is sent to first terminal;First terminal jumps to operating conditions after receiving the speech frame of second terminal transmission, and speech frame is sent to second terminal, and second terminal jumps to operating conditions after the speech frame of first terminal transmission is received, and speech frame is sent to first terminal;In the presence of during first terminal and second terminal confirm link without non-speech data, voice transfer is carried out.Start call after the speech data that this method is sent by the data for confirming to receive for opposite end, invalid data is emptied, it is to avoid the souffle problem of call incipient stage.
Description
Technical field
The present invention relates to communication technical field, and in particular to a kind of voice synchronous method and terminal.
Background technology
With the popularization of next-generation communication network (NGN) concept, using soft switch as core, it will control what is be separated with carrying
System architecture has become the main flow of Communication System Design.Control refers to the signaling and use of chain of command with carrying the structure separated
The carrying in family face is responsible for by independent network element MSC Server and MGW respectively, and MSC Server pass through based on agreement H.248
Control MGW is changed to the Media Stream of the bearer path of Circuit Switching Network and packet net, and complete the negotiations of media, foundation,
The function such as modification and deletion, current 3G core circuit domain is exactly to employ this structure.
In control with carrying under the architecture separated, key-course is indifferent to specific bearer types, and carrying can be
ATM, IP or TDM.In the Long Term Evolution of communication network, the network and equipment of multiple types will long-term existence, with traditional net
Network interconnect be also NGN a key problem.BICC (Bearer Independent Call Control, with carrying
Unrelated Call- Control1) agreement and Session Initiation Protocol etc. solve the problem that interconnects of control signaling aspect, and come for loading end
Say, the quantity for the intermediate NE that media channel is flowed through is more, complicated, the conversion of different media flows coding, the association of media quality
Business, special system bring substantial amounts of realistic problem to demand of media etc. to the intercommunication of media.
Due to controlling the separation with carrying, the overlap joint of both sides' media channel of call is independent, and in the middle of intercommunication network
The diversity of node so that terminal is entering the moment of talking state, it is impossible to ensure the init state of media channel.Terminal exists
The media data that the call incipient stage receives is probably insignificant miscellaneous bag on network, causes the noise for connecting moment, very greatly
The impression of user is influenceed in degree.
It is currently suggested and carries control and check information in speech frame to eliminate noise.It is this for special in speech frame
Field detection means can with auxiliary positioning or solve part souffle problem, or reduce souffle problem orientation range, directly or
Improve voice user's speech quality indirectly.Also a kind of terminal enters the control method of talking state, passes through the control in network
Unit processed sends end of identification of shaking hands to terminal to be carried out instruction terminal and enters voice status, and the state of terminal is according to end of identification of shaking hands
Or the special data sent on network judges state transition so that communicating pair can reach synchronization.
It is above-mentioned to detect that noise needs to consume the media resource of a part all the time in communication process so that whole efficiency drops
It is low, and only detect that the part field on speech frame can not completely prevent the interference of noise bag.Just enter for terminal logical
In the stage of speech phase, continuous miscellaneous bag data is likely to be received, substantial amounts of detection turkey triggers a series of processing, and this is obvious
It is unnecessary.And the mode for being network controlled the SOT state of termination can not effectively prevent the souffle problem that call starts.It is this
Attempt to ensure that terminal can receive data in the method that signaling aspect completes synchronization, do not ensure that the number that terminal is received
According to strictly speech data, terminal data for receiving within a period of time are likely to be in network in each network element media buffer
The invalid data of storage.According to terminal be delayed connect scheme, two lateral terminals can not or opposite end state, the length of delay
Explicit value can not be drawn, delay is too short can not to ensure that invalid network data is drained, and cause terminal directly to broadcast miscellaneous bag data
Put to user, produce ear-piercing noise;Delay is long, inevitably brings the waste of speech resources, user also can be obvious
The Jing Yin of a period of time is experienced, the impression of user is largely influenceed.
The content of the invention
For defect of the prior art, the invention provides a kind of voice synchronous method and terminal, this method passes through true
Start call after recognizing the speech data that the data received are sent for opposite end, realize the synchronization of voice, invalid data is emptied, keep away
Exempt from the souffle problem of call incipient stage.
In a first aspect, the present invention provides a kind of voice synchronous method, including:
First terminal and second terminal start to enter initial state after call, and two terminals in initial state are simultaneously to other side
Send synchronizing information frame;
The synchronizing information frame for receiving the second terminal transmission in the first terminal is received earlier than the second terminal
During the synchronizing information frame sent to the first terminal, the state to be confirmed such as the first terminal is jumped to, and to described second eventually
End sends the confirmation of synchronization frame with effective confirmation, so that the second terminal is after the confirmation of synchronization frame is received, jumps
Waiting voice state is gone to, and speech frame is sent to the first terminal;
The first terminal jumps to operating conditions after the speech frame that the second terminal is sent is received, and to described the
Two terminals send speech frame, so that the second terminal jumps to work after the speech frame that the first terminal is sent is received
State, and send speech frame to the first terminal;
In the presence of during the first terminal and the second terminal confirm link without non-speech data, described first eventually
End and the second terminal carry out voice transfer.
Optionally, methods described also includes:
The first terminal and the second terminal in initial state receive other side transmission data frame be voice
During frame, the speech frame is abandoned.
Optionally, the first terminal jumps to operating conditions after the speech frame that the second terminal is sent is received, and wraps
Include:
In etc. state to be confirmed the first terminal receive that the second terminal sends except synchronizing information frame and same
When the data frame walked outside acknowledgement frame is speech frame, then the first terminal jumps to operating conditions.
Optionally, the first terminal jumps to operating conditions after the speech frame that the second terminal is sent is received, also
Including:
It is described when the quantity for receiving the speech frame that the second terminal is sent in the first terminal is more than predetermined threshold value
First terminal jumps to operating conditions.
Optionally, it is described to exist in the first terminal and the second terminal confirm link without non-speech data
When, the first terminal and the second terminal carry out voice transfer, including:
When all data frames received in the first terminal and the second terminal are speech frame, described first eventually
End and the second terminal carry out voice transfer.
Second aspect, present invention also offers a kind of terminal, including:
First sending module, starts to enter initial state, two in initial state after call for terminal and another terminal
Terminal sends synchronizing information frame to other side simultaneously
Second sending module, for receiving the synchronizing information frame of another terminal transmission in the terminal earlier than described
When another terminal receives the synchronizing information frame that the terminal is sent, the state to be confirmed such as the terminal is jumped to, and to described another
One terminal sends the confirmation of synchronization frame with effective confirmation, so that another terminal is receiving the confirmation of synchronization frame
Afterwards, waiting voice state is jumped to, and speech frame is sent to the terminal;
3rd sending module, work is jumped to for the terminal after the speech frame that another terminal is sent is received
State, and speech frame is sent to another terminal, so that another terminal is after the speech frame that the terminal is sent is received
Operating conditions is jumped to, and speech frame is sent to the terminal;
Voice transfer module, for confirming link in the terminal and another terminal in without non-speech data exist
When, the terminal and another terminal carry out voice transfer.
Optionally, the terminal also includes:
Discard module, the data for receiving other side's transmission in the terminal in initial state and another terminal
When frame is speech frame, the speech frame is abandoned.
Optionally, the 3rd sending module, specifically for:
In etc. state to be confirmed the terminal receive that another terminal sends except synchronizing information frame and it is synchronous really
When the data frame recognized outside frame is speech frame, then the terminal jumps to operating conditions.
Optionally, the 3rd sending module, specifically for:
When the quantity for receiving the speech frame that another terminal is sent in the terminal is more than predetermined threshold value, the terminal
Jump to operating conditions.
Optionally, the voice transfer module, specifically for:
When all data frames received in the terminal and another terminal are speech frame, the terminal and described
Another terminal carries out voice transfer.
As shown from the above technical solution, the present invention is provided a kind of voice synchronous method and terminal, this method pass through first
Terminal and second terminal are in operating conditions and start call after confirming the speech data that the data received are sent for opposite end, realize
The synchronization of voice, invalid data is emptied, it is to avoid the souffle problem of call incipient stage.
Brief description of the drawings
A kind of schematic flow sheet for voice synchronous method that Fig. 1 provides for one embodiment of the invention;
The SOT state of termination that Fig. 2 provides for one embodiment of the invention redirects model schematic;
The topological schematic diagram of the session for the terminal that Fig. 3 provides for one embodiment of the invention;
The form schematic diagram for the synchronizing information frame that Fig. 4 provides for one embodiment of the invention;
The schematic flow sheet for the terminal speech synchronization that Fig. 5 provides for one embodiment of the invention;
The structural representation for the terminal that Fig. 6 provides for one embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment to invention is further described.Following examples are only used for more clear
Illustrate to Chu technical scheme, and can not be limited the scope of the invention with this.
The voice synchronization scenario that the present invention is realized is applied to the network structure of control and the separation of carrying, including IMS, 3G core
The application environments such as heart net.
Fig. 1 shows a kind of schematic flow sheet of voice synchronous method provided in an embodiment of the present invention, as illustrated, the party
Method comprises the following steps:
101st, first terminal and second terminal start call after enter initial state, two terminals in initial state simultaneously to
Other side sends synchronizing information frame;
102nd, the synchronizing information frame of the second terminal transmission is received earlier than the second terminal in the first terminal
When receiving the synchronizing information frame that the first terminal is sent, the state to be confirmed such as the first terminal is jumped to, and to described the
Two terminals send the confirmation of synchronization frame with effective confirmation, so that the second terminal is receiving the confirmation of synchronization frame
Afterwards, waiting voice state is jumped to, and speech frame is sent to the first terminal;
103rd, the first terminal jumps to operating conditions after the speech frame that the second terminal is sent is received, and to institute
State second terminal and send speech frame, so that the second terminal is jumped to after the speech frame that the first terminal is sent is received
Operating conditions, and send speech frame to the first terminal;
104th, in the presence of during the first terminal and the second terminal confirm link without non-speech data, described
One terminal and the second terminal carry out voice transfer.
The above method is in operating conditions by first terminal and second terminal and confirms that the data received are sent for opposite end
Speech data after start call, realize the synchronization of voice, invalid data emptied, it is to avoid call the incipient stage noise ask
Topic.
The implementation process of the above method is illustrated with specific embodiment below.
Fig. 2 shows the state transition model of terminal under the program.The present invention is disappeared by voice synchronous protocol end to end
Except the miscellaneous bag of network of moment is set up in call, this method comprises the following steps:
201st, after the instruction for receiving media connection, terminal A and terminal B are under initial state, the state, and A, B are simultaneously
Synchronizing information frame (SYNC, hereinafter referred to as " synchronization frame ") is sent to other side;
202nd, assume that terminal A receives the synchronization frame of other side's transmission prior to terminal B, then terminal A is jumped to when confirming
State, and send to B the confirmation of synchronization frame (SYNC | ACK, hereinafter referred to as " synchronization frame ") with effective confirmation;
203rd, terminal B receives SYNC | and waiting voice state is jumped to after ACK, hereafter speech frame will be sent to terminal A
(Voice);
204th, terminal A, which is received, jumps to operating conditions after the speech frame that terminal B is sent, hereafter will send voice to terminal B
Frame (Voice);
205th, terminal B, which receives terminal A and sent, jumps to operating conditions after speech frame, hereafter will send speech frame to terminal A
(Voice);
206th, in the presence of during both call sides confirm link without non-speech data, both sides can carry out normal voice biography
Defeated flow.
Because speech data is one section of unknown data in itself, without absolute matched rule, it is impossible to verify, so eventually
End in the data for judging to receive whether as on speech frame, it then follows standard it is as follows:
The data frame that terminal in initial state is received is not speech frame;If receiving Non-alignment Frame and acknowledgement frame,
Do discard processing;
In etc. the data frame in addition to synchronization frame and acknowledgement frame that receives of terminal of state to be confirmed be speech frame, now eventually
End can confirm that non-speech data is not present into the media channel of opposite end to other side for clear and definite local terminal, and it act as SOT state of termination jump
Go to operating conditions;
The data frame in addition to synchronization frame and acknowledgement frame that terminal in waiting voice state is received is speech frame;
All data frames that terminal in operating conditions is received are speech frame, now can determine whether that both sides have been enter into normally
Media are interacted, and terminal carries out playback.
For synchronization frame and acknowledgement frame, terminal can word for word section be detected by the specification of synchronous protocol, and has verification
Field is protected to the correctness of data, it is to avoid erroneous judgement;
For speech frame, terminal performs flexible judgment rule, this state and testing conditions according to state in which
The form of cooperation can effectively avoid judging caused mistake by accident.
In addition, above-mentioned terminal uses full duplex interactive mode:
Synchronous interaction flow between terminal A and terminal B is not question-response formula, but full duplex.For single
For terminal, speech frame or sending and receiving for synchronization frame are to carry out simultaneously, and it is identical and solid to send interval and receive interval
Fixed, both asynchronous process are not interfere with each other.
Terminal A sends speech frame and gives terminal B, is that the voice transmission demand in communication determines no matter whether terminal A receives
Terminal B speech frame is arrived, data will be replaced with synchronization frame when originally needing and sending speech frame and sent out by terminal A
Go.
It should be noted that when terminal is in a certain state, its data frame sent is unique, such as SOT state of termination and number
According to the association table of frame, as shown in table 1.
Table 1
In the Conversation Model shown in Fig. 3, the signaling connection and media connection between terminal A and terminal B are separate, hand over
Change planes and analyzed since media control to send the time point that connection is indicated, terminal A, terminal B and media channel are receiving matchmaker
Status unknown before body connection instruction.
The form of synchronizing information frame and confirmation of synchronization frame can be adjusted according to application demand, and it is interior to design the principle followed
Appearance is fixed, can verified, being easy to detection and consistent with the speech data length that should be transmitted.In this example, the synchronization frame of use
Form is as shown in Figure 4.Wherein, synchronous protocol information, synchronizing information control head are effective fields in synchronizing information, it is necessary to receive
Fang Jinhang is detected and is made corresponding processing according to field value;CRC check is protected to stem and whole packet, prevents mistake
Bag;Data are filled field and filled for fixed data, are easy to recipient to judge.
In this example, because the data of speech frame are not protected by synchronous protocol, the Rule of judgment to jumping to operating conditions
It is proposed with continuously receiving multiple speech frames.Require that terminal is not only entered in the case where waiting state to be confirmed and waiting voice state to speech frame
Row judges, in addition it is also necessary to judge whether to continuously receive speech frame more than predetermined threshold value.For example, when the speech frame for requiring to receive
During for 10 frame, terminal is only when the speech frame continuously received is more than or equal to 10 frame, just into working condition.It with the addition of
This Rule of judgment can be prevented effectively because in transmitting procedure, data make a mistake and cause terminal erroneous judgement and redirect to next
State.
The communication process of this example is referring to Fig. 5.
Terminal A receives connection and indicated, into original state.Although terminal A possesses delivery value, but not can determine that terminal
B and middle each network element state, are filled out so the media data sent to network is replaced with into type in synchronizing information frame, synchronization frame
It is written as " SYN ".Now whole network is in the state for emptying miscellaneous bag, and the operation for cycling through synchronization frame by terminal promotes net
Network all discharges the data in passage.In this stage, terminal A is detected to the data received, is received to all
Data not playbacks;
If terminal A is detected in original state finds that the data that terminal B is sent are synchronization frame, immediately hop to when confirming
State, by the media data sent to network replace with type in acknowledgement frame, acknowledgement frame extend this as " SYN | ACK ".Now, terminal A
Known terminal B has also possessed delivery value, and has been emptied from terminal B to terminal A media channel.
Setting the reason for confirming this state of state is:If terminal A just receives the same of terminal B before local terminal synchronization frame is sent
Step-frame, is jumped directly to send speech frame after working condition, and terminal B can be caused to stop initial state all the time.So now terminal A to
Terminal B cycles through acknowledgement frame, and can not jump directly to working condition.
In this stage, terminal A continues to detect the data received, and all data received are not put
Sound;
Terminal B detects the data received in an initial condition, is found to be after acknowledgement frame and jumps to waiting voice state, starts
Speech data is sent to opposite end.Now, terminal A and terminal B have possessed delivery value, and media channel may insure to have emptied
Miscellaneous bag, the terminal B speech datas to be received such as in this case, whole network is in the confirmation of both call sides state.
In this stage, terminal B is detected to the data received, to all data still not playbacks received.
Terminal A detections receive the speech frame that terminal B is sent, and judge to meet the language for having continuously received specified quantity
After sound frame, terminal A jumps to operating conditions, starts to send speech data to terminal B.Now, terminal B voice incoming terminal A, eventually
What hereafter the passage for holding A to know that terminal B is had been enter into waiting voice state or operating conditions, network from B to A transmitted is all voice
Frame, formally into talking state.
In this stage, terminal A is no longer detected to data, and carries out playback to the speech data received.
Terminal B detections receive terminal A and send speech frame, and judge to meet the voice for having continuously received specified quantity
After frame, terminal B jumps to operating conditions.Now, terminal A voice incoming terminal B, terminal B has known that terminal A has been enter into wait language
What the passage in sound state or operating conditions, network from A to B was hereafter transmitted is all speech frame, formally into talking state.Network
Media access between middle terminal A, B starts normal transmission media data.
In this stage, terminal B is no longer detected to data, and carries out playback to the speech data received.
It is above-mentioned to be had the advantage that in control with the voice synchronous method tool being carried under the structure separated:
Controlled suitable for IMS architecture and Softswitch technology etc. with carrying the system architecture separated, adaptability is good, does not have to network
There is particular/special requirement;Synchronized by the terminal of both call sides by media channel, communication efficiency is high, and security is good, and is not related to
The transformation of the network equipment;Independent synchronous regime and process, it is unrelated with control signaling, follow-up call is not impacted, added
It is flexible with using;It is not limited to voice call synchronous, is equally applicable to multimedia scene end to end or particular data transmission;It is suitable
For the media sync under a variety of communication systems, including 2G, 3G, 4G and PSTN system etc.;Expansible synchronous protocol is supported,
The content of synchronizing information frame and synchronous Rule of judgment can be modified and optimized according to system requirements.
Fig. 6 shows a kind of structural representation of terminal, as shown in fig. 6, including:
First sending module 61, starts to enter initial state, two in initial state after call for terminal and another terminal
Individual terminal sends synchronizing information frame to other side simultaneously;
Second sending module 62, for receiving the synchronizing information frame of another terminal transmission in the terminal earlier than institute
When stating another terminal and receiving the synchronizing information frame that the terminal is sent, the state to be confirmed such as the terminal is jumped to, and to described
Another terminal sends the confirmation of synchronization frame with effective confirmation, so that another terminal is receiving the confirmation of synchronization frame
Afterwards, waiting voice state is jumped to, and speech frame is sent to the terminal;
3rd sending module 63, work is jumped to for the terminal after the speech frame that another terminal is sent is received
Pose, and speech frame is sent to another terminal, so that another terminal is receiving the speech frame that the terminal is sent
After jump to operating conditions, and send speech frame to the terminal;
Voice transfer module 64, for confirming to deposit without non-speech data in link in the terminal and another terminal
When, the terminal and another terminal carry out voice transfer.
The terminal also includes the discard module 65 not shown in Fig. 6:
Discard module 65, the number for receiving other side's transmission in the terminal in initial state and another terminal
During according to frame for speech frame, the speech frame is abandoned.
3rd sending module, specifically for:
In etc. state to be confirmed the terminal receive that another terminal sends except synchronizing information frame and it is synchronous really
When the data frame recognized outside frame is speech frame, then the terminal jumps to operating conditions.
3rd sending module, specifically for:
When the quantity for receiving the speech frame that another terminal is sent in the terminal is more than predetermined threshold value, the terminal
Jump to operating conditions.
The voice transfer module, specifically for:
When all data frames received in the terminal and another terminal are speech frame, the terminal and described
Another terminal carries out voice transfer.
The terminal of the present invention is one-to-one with method, therefore the implementation process of some in method is also applied for the terminal,
To no longer it be described in detail in terminal.
In the specification of the present invention, numerous specific details are set forth.It is to be appreciated, however, that embodiments of the invention can be with
Put into practice in the case of these no details.In some instances, known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this description.
Finally it should be noted that:Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations;To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that:Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it all should cover among the claim of the present invention and the scope of specification.
Claims (6)
1. a kind of voice synchronous method, it is characterised in that including:
First terminal and second terminal start to enter initial state after call, and two terminals in initial state are sent to other side simultaneously
Synchronizing information frame;
Synchronizing information frame that the second terminal sends, which is received, in the first terminal earlier than the second terminal receives institute
When stating the synchronizing information frame of first terminal transmission, the state to be confirmed such as the first terminal is jumped to, and sent out to the second terminal
The confirmation of synchronization frame with effective confirmation is sent, so that the second terminal is jumped to after the confirmation of synchronization frame is received
Waiting voice state, and send speech frame to the first terminal;
In etc. the first terminal of state to be confirmed judging to know that the second terminal that receives sends except synchronous letter
It is speech frame to cease the data frame outside frame and confirmation of synchronization frame, and the quantity of the speech frame received is more than predetermined threshold value
When, operating conditions is jumped to, and speech frame is sent to the second terminal, so that the second terminal is receiving described first eventually
Hold and operating conditions is jumped to after the speech frame sent, and speech frame is sent to the first terminal;
In the presence of during the first terminal and the second terminal confirm link without non-speech data, the first terminal and
The second terminal carries out voice transfer.
2. according to the method described in claim 1, it is characterised in that methods described also includes:
The first terminal and the second terminal in initial state receive other side transmission data frame be speech frame when,
Abandon the speech frame.
3. according to the method described in claim 1, it is characterised in that described true in the first terminal and the second terminal
In the presence of recognizing in link without non-speech data, the first terminal and the second terminal carry out voice transfer, including:
When all data frames received in the first terminal and the second terminal are speech frame, the first terminal and
The second terminal carries out voice transfer.
4. a kind of terminal, it is characterised in that including:
First sending module, starts to enter initial state, two terminals in initial state after call for terminal and another terminal
Simultaneously synchronizing information frame is sent to other side;
Second sending module, the synchronizing information frame for receiving another terminal transmission in the terminal is another earlier than described
When terminal receives the synchronizing information frame that the terminal is sent, the state to be confirmed such as the terminal is jumped to, and to another end
End sends the confirmation of synchronization frame with effective confirmation, so that another terminal is after the confirmation of synchronization frame is received, jumps
Waiting voice state is gone to, and speech frame is sent to the terminal;
3rd sending module, in etc. the terminal of state to be confirmed judging to know another terminal hair of receive described
The data frame in addition to synchronizing information frame and confirmation of synchronization frame sent is speech frame, and the quantity of the speech frame received is big
When predetermined threshold value, operating conditions is jumped to, and speech frame is sent to another terminal, so that another terminal is being received
Operating conditions is jumped to after the speech frame that the terminal is sent, and speech frame is sent to the terminal;
Voice transfer module, for confirming link in the terminal and another terminal in without non-speech data in the presence of,
The terminal and another terminal carry out voice transfer.
5. terminal according to claim 4, it is characterised in that the terminal also includes:
Discard module, for the terminal in initial state and another terminal receive other side transmission data frame be
During speech frame, the speech frame is abandoned.
6. terminal according to claim 4, it is characterised in that the voice transfer module, specifically for:
When all data frames received in the terminal and another terminal are speech frame, the terminal and described another
Terminal carries out voice transfer.
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