CN101488954A - Speech monitoring method and access gateway - Google Patents
Speech monitoring method and access gateway Download PDFInfo
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- CN101488954A CN101488954A CNA2009100001412A CN200910000141A CN101488954A CN 101488954 A CN101488954 A CN 101488954A CN A2009100001412 A CNA2009100001412 A CN A2009100001412A CN 200910000141 A CN200910000141 A CN 200910000141A CN 101488954 A CN101488954 A CN 101488954A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/02—Capturing of monitoring data
- H04L43/026—Capturing of monitoring data using flow identification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
Abstract
The invention discloses a voice monitoring method and access gateway which monitors monitored users, comprising steps as follows: obtaining pulse code modulation sampling data of the monitored users; packaging the pulse code modulation sampling data into real-time transmission protocol data stream; and transmitting the real-time transmission protocol data to a monitoring device. The invention is convenient for monitoring voice.
Description
Technical field
The present invention relates to the communications field of the voice transfer (Voice Over Internet Protocol abbreviates VoIP as) on the internet, particularly, relate in particular to a kind of speech monitoring method at VoIP IAD place.
Background technology
VoIP is meant and utilizes Internet Protocol (Internet Protocol abbreviates IP as) network to carry out voice transfer.Particularly, form the speech digit code stream after analog voice signal being sampled, quantize, encoding; Speech code stream is packaged into RTP (Real-timeTransport Protocol abbreviates RTP as) to be transmitted on IP.
At present, using the most general coding techniques G.711 is, this coding techniques is a kind of waveform codec, is widely used in the global circuit exchanging telephone net.What G.711 use is skimble-scamble quantification technique, and a sample only needs 8bit.G.711, general the title is pulse code modulation (Pulse Code Modulate abbreviates PCM as).When carrying out the multicenter voice mixing, must with skimble-scamble conversion of signals the signal of uniform quantization.The principle of VoIP is for to carry out mixing with multicenter voice with software, and provides the foundation for transmitting on IP network.
Audio monitoring is that telephone subscriber's dialog context is monitored.The method of correlation technique employing at present is repacking phone or subscriber's line, needs to increase or revise hardware device; Wherein, speech monitoring method relatively more commonly used is to obtain speech data and be forwarded to motoring gateway from the RTP bag among the VoIP, and still, for encrypting rtp streaming, this method can't realize monitoring.
In sum, at realizing not proposing effective solution at present as yet based on the speech monitoring method of VoIP in the correlation technique for encrypting the problem that rtp streaming is monitored.
Summary of the invention
At realizing the problem of monitoring for the encryption rtp streaming and propose the present invention based on the speech monitoring method of VoIP in the correlation technique, for this reason, main purpose of the present invention is to provide a kind of improved audio monitoring scheme, one of to address the above problem at least.
To achieve these goals, according to an aspect of the present invention, provide a kind of speech monitoring method.
According to speech monitoring method of the present invention, being used for IAD monitors intercepted user, comprise following operation: the pulse code modulation sampled data of obtaining intercepted user is packaged into the RTP data flow with the pulse code modulation sampled data, and the RTP data flow is sent to watch-dog.
Preferably, the pulse code modulation sampled data is the disunity quantized data, the pulse code modulation sampled data is packaged into the RTP data flow to be comprised: the pulse code modulation sampled data is converted to the unified quantization data, wherein, the pulse code modulation sampled data comprises the transmission sampled data of intercepted user and the reception sampled data of intercepted user; Merge into one group of unified quantization data with being converted to the transmission sampled data of unified quantization data and receiving sampled data, and the unified quantization data that merging obtains are converted to the disunity quantized data; The disunity quantized data is packaged into the RTP data flow.
Preferably, will send sampled data and receive sampled data and merge into one group of unified quantization data and comprise: carry out the addition average treatment to sending sampled data and receiving sampled data, obtain one group of unified quantization data.
Preferably, before the RTP data flow was sent to watch-dog, said method also comprised: if the pulse code modulation sampled data is a G711A disunity quantized data, then the loadtype of RTP is set to 8; If the pulse code modulation sampled data is a G711U disunity quantized data, then the loadtype of RTP is set to 0.
Preferably, in the time of before the RTP data flow is sent to watch-dog, said method also comprises: the internet protocol address that the purpose internet protocol address of RTP data flow and port numbers are set to watch-dog and the port numbers of watch-dog.
To achieve these goals, according to another aspect of the present invention, provide a kind of IAD.
IAD according to the present invention comprises: acquisition module is used to obtain the pulse code modulation sampled data of intercepted user; Processing module, the pulse code modulation sampled data that is used for acquisition module is obtained is packaged into the RTP data flow; Sending module is used for the RTP data flow after the processing module processing is sent to watch-dog.
Preferably, above-mentioned IAD also comprises: first modular converter, be used for the pulse code modulation sampled data is converted to the unified quantization data, wherein, the pulse code modulation sampled data is the disunity quantized data, and the pulse code modulation sampled data comprises the transmission sampled data of intercepted user and the reception sampled data of intercepted user; First merges module, be used for the transmission sampled data of intercepted user that the unified quantization data after first modular converter conversion are comprised and the reception sampled data of intercepted user and merge into one group of unified quantization data, and export one group of unified quantization data that merging obtains to second modular converter; Second modular converter is used for one group of unified quantization data is converted to the disunity quantized data, and exports the disunity quantized data to processing module.
Preferably, above-mentioned IAD also comprises: first is provided with module, is used for purpose internet protocol address and port numbers and is set to the internet protocol address of watch-dog and the port numbers of watch-dog; Second is provided with module, is used for being provided with according to the type of pulse code modulation sampled data the loadtype of RTP.
By the present invention, the pulse code modulation sampled data of intercepted user is obtained in employing, and it is packaged into the method that the RTP data flow sends to watch-dog, solved in the correlation technique based on the speech monitoring method of VoIP and can't realize for encrypting the problem that rtp streaming is monitored, and then made things convenient for audio monitoring.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart that is used to implement the communication system that comprises the VoIP IAD of the embodiment of the invention;
Fig. 2 is the flow chart according to the speech monitoring method of the embodiment of the invention;
Fig. 3 is the schematic diagram according to the speech monitoring method of the embodiment of the invention;
Fig. 4 is the structured flowchart according to the IAD of the embodiment of the invention;
Fig. 5 is the concrete structure block diagram according to embodiment of the invention IAD.
Embodiment
Functional overview
Consider in the correlation technique and can't realize for encrypting the problem that rtp streaming is monitored based on the speech monitoring method of VoIP, the embodiment of the invention provides a kind of improved audio monitoring scheme, obtain time division multiplexing (the Time DivisionMultiplexing of certain road conversation receiving-transmitting sides from local terminal, abbreviate TDM as) data, after being mixed to a paths by software mode, be packaged into the RTP bag and send to watch-dog, can not carry out the hardware change and just can realize the VoIP audio monitoring easily.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the structured flowchart that is used to implement the communication system that comprises the VoIP IAD of the embodiment of the invention, as shown in Figure 1, has the VoIP IAD of monitor function, compares with common VoIP IAD, has mainly increased near-end and has monitored processing module.Far-end monitoring reception device is identical with common rtp streaming decoder, it can be special VoIP IAD, also can be personal computer (Personal Computer, abbreviate PC as) decode with the software packet catcher, this partial content does not belong in the discussion scope of the present invention, does not therefore do detailed description.After handling through the VoIP IAD of band monitor function, once conversation can form three rtp streamings: first rtp streaming is the common reception rtp streaming of conversing with far-end; Second rtp streaming is the common transmission rtp streaming of conversing with far-end, and first and second rtp streaming and common IAD are identical; The 3rd rtp streaming is to monitor voice RTP, and the characteristics of this rtp streaming are monitored the receipts of a phone/content, and all in a rtp streaming, its purpose IP and port are far-end monitoring reception devices, and this part is newly-increased code stream.Far-end IAD and far-end monitoring reception device are complete separate equipment.For example, Shanghai and Shenzhen user are conversing, and the Shanghai user is an intercepted user, and Pekinese public security organ monitors conversation.Then corresponding to Fig. 1, the IAD at user place, Shanghai is the IAD that has monitor function; The gateway at its conversation object-user place, Shenzhen is the far-end IAD; Beijing public security organ is a far-end monitoring reception device.
Method embodiment
According to embodiments of the invention, a kind of speech monitoring method is provided, be used for IAD intercepted user is monitored.Fig. 2 is the flow chart according to the speech monitoring method of the embodiment of the invention, and as shown in Figure 2, this method comprises that following step S202 is to step S204:
Step S202 obtains the PCM sampled data of intercepted user;
Step S204 is packaged into the RTP data flow with the PCM sampled data, and the RTP data flow is sent to watch-dog.
In step S204, the processing that the PCM sampled data is packaged into the RTP data flow comprises following situation:
The PCM sampled data is the disunity quantized data, and the PCM sampled data is converted to the unified quantization data, and wherein, the PCM sampled data comprises the transmission sampled data of intercepted user and the reception sampled data of intercepted user; Merge into one group of unified quantization data with being converted to the transmission sampled data of unified quantization data and receiving sampled data, and the unified quantization data that merging obtains are converted to the disunity quantized data; The disunity quantized data is packaged into the RTP data flow.
In above-mentioned situation, the transmission sampled data is merged into one group of unified quantization data with the reception sampled data comprise: will send sampled data and receive sampled data and carry out the addition average treatment, and obtain one group of unified quantization data.
Wherein, before the RTP data flow is sent to watch-dog, purpose internet protocol address that can the RTP data flow and the internet protocol address that port numbers is set to watch-dog and the port numbers of watch-dog.If the PCM sampled data is a G711A disunity quantized data, then the loadtype of RTP is set to 8; If the PCM sampled data is a G711U disunity quantized data, then the loadtype of RTP is set to 0.
By this embodiment, a receipts/bi-directional data that obtains certain user merges in the voice flow, receives to monitor simultaneously/send out content, has both saved bandwidth, has avoided again and need carry out synchronous problem to transmitting-receiving bidirectional on watch-dog; Tdm data is processed into the RTP bag sends on the watch-dog of assigned ip and port, can realize remote monitoring; Do not need to carry out any hardware and change, just can realize voice monitoring by software; Only the RTP bag that generates a plurality of destination addresses need be sent to, just multi-point monitoring can be carried out easily; Watch-dog does not need professional equipment, for example, can be PC, (for example, WireShark) just can get access to monitoring code stream and be reduced into raw tone with some basic software packet catchers.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Fig. 3 is the schematic diagram according to the speech monitoring method of the embodiment of the invention, as shown in Figure 3, phone is sent to the PCM data (Tx PCM) that coder/decoder (CODEC) is treated to transmission with the tdm data (Tx TDM) that sends, then Tx PCM is packaged as RTP, send to far-end by IP network, for the PCM data (Rx PCM) that receive, coder/decoder is treated to the tdm data (Rx TDM) that receives with it, and be sent to phone, comprise following operation according to the processing procedure of the monitoring rtp streaming of the embodiment of the invention:
Step 1 inserts the PCM sampled data that side is obtained the voice of intercepted user from the subscribers feeder of voip gateway.Particularly, the voice signal of simulation becomes the PCM signal of 64kbit/s through after the encoder sampling, quantizing, encode.
Step 2 is converted to the unified quantization data with the PCM sampled data of transmitting-receiving bidirectional.At present most popular is G711A and the G711U that disunity quantizes.The data that disunity quantizes must be converted to the data of unified quantization before carrying out the audio mixing processing.That is, TxPCM and Rx PCM being carried out code conversion is that Tx does not have symbolic coding and Rx does not have symbolic coding.Transformational relation between G711A and the unified quantization data is as shown in table 1 below, the unified quantization data of 0～255 correspondence of table 1 expression G711A; It is as shown in table 2 that 0～255 of G711U is converted to the unified quantization data.
Table 1 G711A is converted to the unified quantization data
0x6a，0x6b，0x68，0x69，0x6e，0x6f，0x6c，0x6d，0x62，0x63，0x60，0x61，
0x66，0x67，0x64，0x65，0x75，0x75，0x74，Ox74，0x77，0x77，0x76，0x76，
0x71，0x71，0x70，0x70，0x73，0x73，0x72，0x72，0x2a，0x2e，0x22，0x26，
0x3a，0x3e，0x32，0x36，0x?a，0x?e，0x?2，Ox?6，0x1a，0x1e，0x12，0x16，
0x55，0x57，0x51，0x53，0x5d，0x5f，0x59，0x5b，0x45，0x47，0x41，0x43，
0x4d，Ox4f，0x49，0x4b，0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，
0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，0x7f，0x7f，0x7f，0x7f，
0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，
0x7a，0x7a，0x7a，0x7a，0x7b，0x7b，0x7b，0x7b，0x78，0x78，0x78，0x78，
0x79，0x79，0x79，0x79，0x7d，0x7d，0x7d，0x7d，0x7d，0x7d，0x7d，0x7d，
0x7c，0x7c，0x7c，0x7c，0x7c，0x7c，0x7c，0x7c，0x95，0x94，0x97，0x96，
0x91，0x90，0x93，0x92，0x9d，0x9c，0x9f，0x9e，0x99，0x98，0x9b，0x9a，
0x8a，0x8a，0x8b，0x8b，0x88，0x88，0x89，0x89，0x8e，0x8e，0x8f，0x8f，
0x8c，0x8c，0x8d，0x8d，0xd6，0xd2，0xde，0xda，0xc6，0xc2，0xce，0xca，
0xf6，0xf2，0xfe，0xfa，0xe6，0xe2，0xee，0xea，0xab，0xa9，0xaf，0xad，
0xa3，0xa1，0xa7，0xa5，0xbb，0xb9，0xbf，0xbd，0xb3，0xb1，0xb7，0xb5，
0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，
0x81，0x81，0x81，0x81，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，
0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x85，0x85，0x85，0x85，
0x84，0x84，0x84，0x84，0x87，0x87，0x87，0x87，0x86，0x86，0x86，0x86，
0x82，0x82，0x82，0x82，0x82，0x82，0x82，0x82，0x83，0x83，0x83，0x83，
0x83，0x83，0x83，0x83
Table 2 G711U is converted to the unified quantization data
0x?2，0x?6，0x?a，0x?e，0x12，0x16，0x1a，0x1e，0x22，0x26，0x2a，0x2e，
0x32，0x36，0x3a，0x3e，0x41，0x43，0x45，0x47，0x49，0x4b，0x4d，0x4f，
0x51，0x53，0x55，0x57，0x59，0x5b，0x5d，0x5f，0x61，0x62，0x63，0x64，
0x65，0x66，0x67，0x68，0x69，0x6a，0x6b，0x6c，0x6d，0x6e，0x6f，0x70，
0x70，0x71，0x71，0x72，0x72，0x73，0x73，0x74，0x74，0x75，0x75，0x76，
0x76，0x77，0x77，0x78，0x78，0x78，0x79，0x79，0x79，0x79，0x7a，0x7a，
0x7a，0x7a，0x7b，0x7b，0x7b，0x7b，0x7c，0x7c，0x7c，Ox7c，0x7c，0x7c，
0x7d，0x7d，0x7d，0x7d，0x7d，0x7d，0x7d，0x7d，0x7e，0x7e，0x7e，0x7e，
0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，0x7e，0x7f，0x7f，0x7f，0x7f，
0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，
0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x7f，0x80，0xfd，0xf9，0x15，0xfl，
0xdd，0xd9，0xd5，0xd1，0xcd，0xc9，0xc5，0xc1，0xbe，0xbc，0xba，0xb8，
0xb6，0xb4，0xb2，0xb0，0xae，0xac，0xaa，0xa8，0xa6，0xa4，0xa2，0xa0，
0x9e，0x9d，0x9c，0x9b，0x9a，0x99，0x98，0x97，0x96，0x95，0x94，0x93，
0x92，0x91，0x90，0x8f，0x8f，0x8e，0x8e，0x8d，0x8d，0x8c，0x8c，0x8b，
0x8b，0x8a，0x8a，0x89，0x89，0x88，0x88，0x87，0x87，0x87，0x86，0x86，
0x86，0x86，0x85，0x85，0x85，0x85，0x84，0x84，0x84，0x84，0x83，0x83，
0x83，0x83，0x83，0x83，0x82，0x82，0x82，0x82，0x82，0x82，0x82，0x82，
0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，0x81，
0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，
0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，0x80，
0x80，0x80，0x80，0x80
Step 3 is carried out the addition average treatment with the receiving-transmitting sides data after the conversion, and the speech of receiving/send out side can be merged to is one group of voice; That is, Tx is not had symbolic coding and Rx, and not have the symbolic coding audio mixing be that audio mixing does not have symbolic coding, and concrete computational methods can realize by following formula:
Mix＝(G711ToUniform(Rx)+G711ToUniform(Tx))/2
Wherein, Mix represents the audio mixing data, and Rx represents the reception sampled data of intercepted user, and this reception sampled data is G711; Tx represents the transmission sampled data of intercepted user, and this transmission sampled data is G711; G711ToUniform (In) expression is converted to the function of unified quantization data with G711, and its conversion method is as described in the step 2.
Step 4 is the disunity quantized data with the speech conversion after merging, that is, audio mixing is not had symbolic coding be converted to audio mixing PCM, and the voice after the merging are data of unified quantization, before being packaged into rtp streaming, need be converted to general G711 data earlier.The G711A data of unified quantization data 0～255 correspondence are as shown in table 3; The G711U data of unified quantization data 0～255 correspondence are as shown in table 4.
Table 3 unified quantization data are converted to G711A
0x2a，0x2a，0x2a，0x2a，0x2a，0x2b，0x2b，0x2b，0x2b，0x28，0x28，0x28，
0x28，0x29，0x29，0x29，0x29，0x2e，0x2e，0x2e，0x2e，0x2f，0x2f，0x2f，
0x2f，0x2c，0x2c，0x2c，0x2c，0x2d，0x2d，0x2d，0x2d，0x22，0x22，0x22，
0x22，0x23，0x23，0x23，0x23，0x20，0x20，0x20，0x20，0x21，0x21，0x21，
0x21，0x26，0x26，0x26，0x26，0x27，0x27，0x27，0x27，0x24，0x24，0x24，
0x24，0x25，0x25，0x25，0x25，0x3a，0x3a，0x3b，0x3b，0x38，0x38，0x39，
0x39，0x3e，0x3e，0x3f，0x3f，0x3c，0x3c，0x3d，0x3d，0x32，0x32，0x33，
0x33，0x30，0x30，0x31，0x31，0x36，0x36，0x37，0x37，0x34，0x34，0x35，
0x35，0x?a，0x?b，0x?8，0x?9，0x?e，0x?f，0x?c，0x?d，0x?2，0x?3，0x?0，
0x?1，0x?6，0x?7，0x?4，0x?5，0x1b，0x19，0x1f，0x1d，0x13，0x11，0x17，
0x15，0x69，0x6d，0x61，0x65，0x7d，0x75，0x45，0xd5，0xc5，0xf5，0xfd，
0xe5，0xe1，0xed，0xe9，0x95，0x97，0x91，0x93，0x9d，0x9f，0x99，0x9b，
0x85，0x84，0x87，0x86，0x81，0x80，0x83，0x82，0x8d，0x8c，0x8f，0x8e，
0x89，0x88，0x8b，0x8a，0xb5，0xb5，0xb4，0xb4，0xb7，0xb7，0xb6，0xb6，
0xb1，0xb1，0xb0，0xb0，0xb3，0xb3，0xb2，0xb2，0xbd，0xbd，0xbc，0xbc，
0xbf，0xbf，0xbe，0xbe，0xb9，0xb9，0xb8，0xb8，0xbb，0xbb，0xba，0xba，
0xa5，0xa5，0xa5，0xa5，0xa4，0xa4，0xa4，0xa4，0xa7，0xa7，0xa7，0xa7，
0xa6，0xa6，0xa6，0xa6，0xa1，0xa1，0xa1，0xa1，0xa0，0xa0，0xa0，0xa0，
0xa3，0xa3，0xa3，0xa3，0xa2，0xa2，0xa2，0xa2，0xad，0xad，0xad，0xad，
0xac，0xac，0xac，0xac，0xaf，0xaf，0xaf，0xaf，0xae，0xae，0xae，0xae，
0xa9，0xa9，0xa9，0xa9，0xa8，0xa8，0xa8，0xa8，0xab，0xab，0xab，0xab，
0xaa，0xaa，0xaa，0xaa
Table 4 unified quantization data are converted to G711U
0x?0，0x?0，0x?0，0x?0，0x?0，0x?1，0x?1，0x?1，0x?1，0x?2，0x?2，0x?2，
0x?2，0x?3，0x?3，0x?3，0x?3，0x?4，0x?4，0x?4，0x?4，0x?5，0x?5，0x?5，
0x?5，0x?6，0x?6，0x?6，0x?6，0x?7，0x?7，0x?7，0x?7，0x?8，0x?8，0x?8，
0x?8，0x?9，0x?9，0x?9，0x?9，0x?a，0x?a，0x?a，0x?a，0x?b，0x?b，0x?b，
0x?b，0x?c，0x?c，0x?c，0x?c，0x?d，0x?d，0x?d，0x?d，0x?e，0x?e，0x?e，
0x?e，0x?f，0x?f，0x?f，0x?f，0x10，0x10，0x11，0x11，0x12，0x12，0x13，
0x13，0x14，0x14，0x15，0x15，0x16，0x16，0x17，0x17，0x18，0x18，0x19，
0x19，0x1a，0x1a，0x1b，0x1b，0x1c，0x1c，0x1d，0x1d，0x1e，0x1e，0x1f，
0x1f，0x20，0x21，0x22，0x23，0x24，0x25，0x26，0x27，0x28，0x29，0x2a，
0x2b，0x2c，0x2d，0x2e，0x2f，0x30，0x32，0x34，0x36，0x38，0x3a，0x3c，
0x3e，0x41，0x45，0x49，0x4d，0x53，0x5b，0x67，0xff，0xe7，0xdb，0xd3，
0xcd，0xc9，0xc5，0xc1，0xbe，0xbc，0xba，0xb8，0xb6，0xb4，0xb2，0xb0，
0xaf，0xae，0xad，0xac，0xab，0xaa，0xa9，0xa8，0xa7，0xa6，0xa5，0xa4，
0xa3，0xa2，0xa1，0xa0，0x9f，0x9f，0x9e，0x9e，0x9d，0x9d，0x9c，0x9c，
0x9b，0x9b，0x9a，0x9a，0x99，0x99，0x98，0x98，0x97，0x97，0x96，0x96，
0x95，0x95，0x94，0x94，0x93，0x93，0x92，0x92，0x91，0x91，0x90，0x90，
0x8f，0x8f，0x8f，0x8f，0x8e，0x8e，0x8e，0x8e，0x8d，0x8d，0x8d，0x8d，
0x8c，0x8c，0x8c，0x8c，0x8b，0x8b，0x8b，0x8b，0x8a，0x8a，0x8a，0x8a，
0x89，0x89，0x89，0x89，0x88，0x88，0x88，0x88，0x87，0x87，0x87，0x87，
0x86，0x86，0x86，0x86，0x85，0x85，0x85，0x85，0x84，0x84，0x84，0x84，
0x83，0x83，0x83，0x83，0x82，0x82，0x82，0x82，0x81，0x81，0x81，0x81，
0x80，0x80，0x80，0x80
Step 5 is bundled to the disunity quantized data after merging in the RTP bag.When packing, purpose IP and port numbers fill into the IP and the port numbers of far-end audiomonitor; For the loadtype of RTP, if use G711A, then loadtype fills out 8, if use G711U, then loadtype fills out 0.
Step 6 sends to the RTP bag on the watch-dog (that is, the monitoring IP and the port of appointment) by IP network.
Device embodiment
According to embodiments of the invention, provide a kind of IAD.Fig. 4 is the structured flowchart according to the IAD of the embodiment of the invention, and as shown in Figure 4, this IAD comprises: acquisition module 42, processing module 44, sending module 46 are described said structure below.
Embodiment
Fig. 5 is the concrete structure block diagram according to the IAD of the embodiment of the invention, as shown in Figure 5, this IAD also comprises: first modular converter 52, first merges module 54, second modular converter 56, first is provided with module 58, second module 50 is set, and below said structure is described.
First modular converter 52, be connected to acquisition module 42, the pulse code modulation sampled data that is used for acquisition module 42 is obtained is converted to the unified quantization data, wherein, the pulse code modulation sampled data is the disunity quantized data, and the pulse code modulation sampled data comprises the transmission sampled data of intercepted user and the reception sampled data of intercepted user; First merges module 54, be connected to first modular converter 52, be used for the transmission sampled data of intercepted user that the unified quantization data after the conversion of first modular converter 52 are comprised and the reception sampled data of intercepted user and merge into one group of unified quantization data, and export one group of unified quantization data that merging obtains to second modular converter; Second modular converter 56 is connected to first and merges module 54, is used for the first one group of unified quantization data that merges after module 54 merges are converted to pulse code modulation data, and exports pulse code modulation data to processing module.
First is provided with module 58, is used for purpose internet protocol address and port numbers and is set to the internet protocol address of watch-dog and the port numbers of watch-dog; Second is provided with module 50, be used for being provided with the loadtype of RTP according to the type of pulse code modulation sampled data, wherein, if the pulse code modulation sampled data is a G711A disunity quantized data, then second the submodule loadtype is set is set to 8, if the pulse code modulation sampled data is a G711U disunity quantized data, then second the submodule loadtype is set is set to 0.
In sum, pass through the above embodiment of the present invention, the pulse code modulation sampled data of intercepted user is obtained in employing, and it is packaged into the method that the RTP data flow sends to watch-dog, solved in the correlation technique based on the speech monitoring method of VoIP and can't realize for encrypting the problem that rtp streaming is monitored, and then made things convenient for audio monitoring.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a speech monitoring method is used for IAD intercepted user is monitored, and it is characterized in that, described method comprises:
Obtain the pulse code modulation sampled data of described intercepted user;
Described pulse code modulation sampled data is packaged into the RTP data flow, and described RTP data flow is sent to watch-dog.
2. method according to claim 1 is characterized in that, described pulse code modulation sampled data is the disunity quantized data, described pulse code modulation sampled data is packaged into described RTP data flow comprises:
Described pulse code modulation sampled data is converted to the unified quantization data, and wherein, described pulse code modulation sampled data comprises the transmission sampled data of described intercepted user and the reception sampled data of described intercepted user;
The described transmission sampled data and the described reception sampled data that are converted to the unified quantization data are merged into one group of unified quantization data, and the described unified quantization data that merging obtains are converted to the disunity quantized data;
Described disunity quantized data is packaged into described RTP data flow.
3. method according to claim 2 is characterized in that, described transmission sampled data and described reception sampled data is merged into one group of unified quantization data comprise:
Described transmission sampled data and described reception sampled data are carried out the addition average treatment, obtain described one group of unified quantization data.
4. method according to claim 1 is characterized in that, before described RTP data flow was sent to described watch-dog, described method also comprised:
If described pulse code modulation sampled data is a G711A disunity quantized data, then the loadtype of RTP is set to 8;
If described pulse code modulation sampled data is a G711U disunity quantized data, then the loadtype of RTP is set to 0.
5. method according to claim 1 is characterized in that, in the time of before described RTP data flow is sent to described watch-dog, described method also comprises:
The internet protocol address that the purpose internet protocol address of described RTP data flow and port numbers are set to described watch-dog and the port numbers of described watch-dog.
6. an IAD is characterized in that, comprising:
Acquisition module is used to obtain the pulse code modulation sampled data of intercepted user;
Processing module is used for the described pulse code modulation sampled data that described acquisition module obtains is packaged into the RTP data flow;
Sending module is used for the described RTP data flow after the described processing module processing is sent to watch-dog.
7. IAD according to claim 6 is characterized in that, also comprises:
First modular converter, be used for described pulse code modulation sampled data is converted to the unified quantization data, wherein, described pulse code modulation sampled data is the disunity quantized data, and described pulse code modulation sampled data comprises the transmission sampled data of described intercepted user and the reception sampled data of described intercepted user;
First merges module, be used for the transmission sampled data of described intercepted user that the unified quantization data after the conversion of described first modular converter are comprised and the reception sampled data of described intercepted user and merge into one group of unified quantization data, and export described one group of unified quantization data that merging obtains to described second modular converter;
Second modular converter is used for described one group of unified quantization data are converted to the disunity quantized data, and exports described disunity quantized data to described processing module.
8. IAD according to claim 6 is characterized in that, also comprises:
First is provided with module, is used for purpose internet protocol address and port numbers and is set to the internet protocol address of described watch-dog and the port numbers of described watch-dog.
Second is provided with module, is used for being provided with according to the type of described pulse code modulation sampled data the loadtype of RTP.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100001412A CN101488954A (en) | 2009-01-09 | 2009-01-09 | Speech monitoring method and access gateway |
| RU2011132998/08A RU2510140C2 (en) | 2009-01-09 | 2009-11-30 | Method of monitoring speech signal and access gateway |
| BRPI0919369A BRPI0919369A2 (en) | 2009-01-09 | 2009-11-30 | voice monitoring method and access gateway |
| PCT/CN2009/075223 WO2010078782A1 (en) | 2009-01-09 | 2009-11-30 | Voice monitoring method and access gateway |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100001412A CN101488954A (en) | 2009-01-09 | 2009-01-09 | Speech monitoring method and access gateway |
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| CN101488954A true CN101488954A (en) | 2009-07-22 |
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| CN (1) | CN101488954A (en) |
| BR (1) | BRPI0919369A2 (en) |
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| WO2010149099A1 (en) * | 2009-12-01 | 2010-12-29 | 中兴通讯股份有限公司 | Method and device for realizing monitoring signaling and signaling gateway thereof |
| WO2012152084A1 (en) * | 2011-09-26 | 2012-11-15 | 中兴通讯股份有限公司 | Communication monitoring method, device, and system thereof |
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| CN104144086A (en) * | 2013-12-04 | 2014-11-12 | 腾讯科技（深圳）有限公司 | Communication method and system and information sending/receiving device |
| CN105100086A (en) * | 2015-07-07 | 2015-11-25 | 上海斐讯数据通信技术有限公司 | VoIP voice monitoring method and VoIP voice monitoring system based on symmetric NAT |
| CN105873029A (en) * | 2015-01-21 | 2016-08-17 | 中国移动通信集团公司 | Method and device for call interception |
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Also Published As
| Publication number | Publication date |
|---|---|
| RU2011132998A (en) | 2013-02-20 |
| RU2510140C2 (en) | 2014-03-20 |
| WO2010078782A1 (en) | 2010-07-15 |
| BRPI0919369A2 (en) | 2016-01-05 |
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