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CN1203005A - Remote Speech Coding Over Long-Distance Links - Google Patents

Remote Speech Coding Over Long-Distance Links Download PDF

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Publication number
CN1203005A
CN1203005A CN96196058A CN96196058A CN1203005A CN 1203005 A CN1203005 A CN 1203005A CN 96196058 A CN96196058 A CN 96196058A CN 96196058 A CN96196058 A CN 96196058A CN 1203005 A CN1203005 A CN 1203005A
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audio information
speech
network
signal processing
telephone
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小L·A·韦弗
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Qualcomm Inc
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Qualcomm Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
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Abstract

A wireless telephone system (106) having digital signal processing capability determines if a telephone call is directed to a public switched telephone network (100) (PSTN) located within a local calling area having another wireless telephone system. If so, an asynchronous transfer mode (ATM) or other packet based link (104) is established between the two wireless telephone systems, and vocoded audio information is transmitted over that ATM link. Upon reaching the second wireless telephone system the vocoded audio information is converted by the second wireless telephone system (106) into pulse code modulation (PCM) encoded audio information, and introduced into the PSTN (100). On the reverse path, PCM formatted data from the receiving PSTN (100) is converted into vocoded audio information by the second wireless telephone system (106), and then transmitted to the first wireless telephone system (106) via the ATM or other packet based link (104).

Description

Remote vocoding in the long-distance link
Technical field
The present invention relates to telecommunications.Especially, the present invention relates to be used for method and system digital network and public telephone switch system docking.
Background technology
Fig. 1 is the block diagram of call type code network.Local calling area 90 (a) is made of Public Switched Telephone Network 100 (a) and radio telephone system 106 (a), and local calling area 90 (b) is made of PSTN 100 (b) and radio telephone system 106 (b).In its local calling area 90 separately, radio telephone system 106 provides the mobile phone service, PSTN 100 (a) and (b) provide landline telephone service.Long-range network 102 and Asynchronous Transfer Mode (ATM) network 104 is coupled to PSTN 100 (a) and (b) and radio telephone system 106 (a) and (b), and at local calling area 90 (a) with the telecommunications service of long distance are provided (b).Atm network 104 provides long apart from telecommunications service by connecting with packet-based high speed, and long-range network 102 connects by special use provides long apart from telecommunications service.
Generally, by a kind of processing that is called speech coding, encode with digital form pair and the radio telephone system 106 contained relevant any audio-frequency informations of call, and, encode with digital form pair and the PSTN 100 contained relevant any audio-frequency informations of call by a kind of processing that is called pulse-code modulation (PCM).Speech coding is more much effective than PCM, but it needs more signal processing resources in fact.During the initial speech coding of audio-frequency information and in order to produce this audio-frequency information again, it is carried out needing these to handle resource when voice signal is decoded.Radio telephone system 106 (a) and (b) utilize speech coding because their use radio frequency (RF) signal to come conduct telephone calls, has limited the quantity of the RF bandwidth that can be used for conducting these calls.Therefore, the efficient in the radio telephone system 106 is crucial.PSTN 100 does not have this bandwidth constraints, thus the required auxiliary signal of speech coding to handle the cost of resource normally irrational.
During the call of PSTN 100 and radio telephone system 106, must between two systems, exchange audio-frequency information with the digital form coding.Correspondingly, coding method must be transformed into PCM from speech coding, and vice versa, thereby each system can suitably produce audio-frequency information again.At present, according to the direction of data flow, only before data are crossed over and after crossing over, just in radio telephone system 106, carry out this conversion between two systems.The reason of carrying out this conversion in radio telephone system 106 is wherein to have essential signal processing resources, and PSTN 100 does not generally have these signal processing resources.
Point to the example call that receives PSTN 100 from radio telephone system 106 (a) at one, before the system in be introduced into other telecommunication system for Route Selection, the speech coding audio-frequency information that leaves radio telephone system 106 (a) is carried out the voice signal decoding.The telecommunication system that points to other comprises the PSTN 100 (a) that is used for local telephone calls, and is used for long-range network 102 and atm network 104 that long-distance telephone is called out.Also can utilize PSTN 100 (a) that long-distance telephone is called out and introduce long-range network 102 or atm network 104.On reverse path, before in radio telephone system 106 (a), being further processed, be converted into the speech coding audio-frequency information via the pcm encoder audio-frequency information that points to the system's arrival radio telephone system 106 (a) in other telecommunication system from PSTN 100 (a).
For many calls, the above method that relevant audio-frequency information is handled is invalid.This be because, for most of paths of propagating, this audio-frequency information is encoded by not too effective PCM method with the audio-frequency information of digital form coding, therefore in most of times, it is encoded with not too effective PCM.Especially, radio telephone system 200 outside contained long-distance telephones are called out and almost are not always the case between whole transmission period.A kind of improved telephone call processing method allows audio-frequency information more keeping the speech coding form in most of the time, thereby has reduced the quantity of the Internet resources that call consumed and reduced cost.Therefore, need be used for improved method and system that radio telephone system is docked with other telephone network.
Summary of the invention
The present invention is used for novel improvements method and system that digital network is docked with public switched telephone network (PSTN).According to one embodiment of the present of invention, first radio telephone system determines whether that a call is to point to the Public Switched Telephone Network that is positioned at local calling area (having another radio telephone system).If like this, then between two radio telephone systems, set up Asynchronous Transfer Mode (ATM) or other packet-based link, and on this atm link, transmit audio-frequency information through speech coding.When arriving second radio telephone system, converted to the pulse-code modulation codes audio information through the audio-frequency information of speech coding by second radio telephone system, and be introduced into PSTN.On reverse path, converted to the audio-frequency information of speech coding from the data of the PCM form that receives PSTN by second radio telephone system, be transferred to first radio telephone system via ATM or other based on grouped link then.
Summary of drawings
Also will make characteristics of the present invention, purpose and advantage become more obvious in conjunction with the accompanying drawings from detailed description proposed below, wherein identical label letter representation appropriate section, wherein:
Fig. 1 is the block diagram of a telephone network;
Fig. 2 is the block diagram of a telephone network, and the Route Selection according to the call of one embodiment of the invention is shown; And
Fig. 3 is the block diagram according to the cellular telephone system of one embodiment of the present of invention formation.
Better embodiment of the present invention
In following description, various systems and structure are described specifically to an example embodiment of the present invention.These systems comprise Asynchronous Transfer Mode (ATM) network and with receive the radio telephone system that Public Switched Telephone Network is positioned at same local calling area.It is apparent that for those skilled in the art, use other system consistent with use the present invention with identity function.For example, substitute atm network, use can distribute other the packet-based network or the operation of the present invention of other network conforms of telecommunication resources between various calls.In addition, substitute another radio telephone system, use and select route and any telecommunication signal treatment system that the speech coding audio-frequency information converts the pcm encoder audio-frequency information to is also met the present invention.In addition, with regard to the situation of radio telephone system the present invention is described.Those skilled in the art are apparent that interactive system compares with other digital networks, use the present invention in other digital network that the present invention can encode to audio frequency and out of Memory with the height effective and efficient manner.Under other situation that is disclosed, well-known system is shown with the form of block diagram.Do like this is in order to prevent from unnecessarily to hide disclosed content.
Fig. 2 is the block diagram according to the telephone network of one embodiment of the present of invention formation.Local calling area 190 (a) is made of PSTN 200 (a) and radio telephone system 206 (a), and local calling area 190 (b) is made of PSTN200 (b) and radio telephone system 206 (b).Local calling area 190 (c) is made of PSTN 200 (c).In its local calling area 190 separately, radio telephone system 206 provides the mobile phone service, and PSTN 200 provides landline telephone service.Long-range network 202 and atm network 204 are coupled to PSTN 200 (a) and (b) and (c) and radio telephone system 206 (a) and (b), and provide the long haul communication service between local calling area 190 (a)-(c).Atm network 204 uses high-speed data packets to provide long apart from telecommunications service, and long-range network 202 has provides long apart from telecommunications service special-purpose the connection.Generally, limit local calling area 190 by actual range, yet, consider that also other qualification comprises area code, reduce the cost of exchange message and do not use the long ability of transmitting information apart from telecommunications service.
Dotted line (A) illustrates an example call between radio telephone system 206 (a) and the PSTN 200 (a), and it is a local telephone calls.When the audio-frequency information from radio telephone system 206 (a) transmits in wireless telephony network 206, this audio-frequency information is encoded by speech coding.PSTN 200 (a) is preceding introducing, and the coding method in the radio telephone system 206 converts PCM to from speech coding, and the audio-frequency information of PCM speech coding is sent to PSTN 200 (a), and here this information is used to produce audio-frequency information.On reverse path, to encoding, the audio-frequency information of pcm encoder is transferred in the radio telephone system 206 (a) via path (A) from the audio-frequency information of PSTN 200 (a) by PCM.After entering radio telephone system 206 (a), the audio-frequency information of pcm encoder is converted into the audio-frequency information of speech coding, further to transmit in radio telephone system 206 (a).
Dotted line (B) illustrates the path of the long-distance telephone calling of example between radio telephone system 206 (a) and the PSTN 200 (c).During this call, before the audio-frequency information of the speech coding that produces is being introduced into long-range network 202, be converted into the audio-frequency information of pcm encoder in radio telephone system 206 (a).Then, long-range network 202 is sent to PSTN 200 (c) to the audio-frequency information of this pcm encoder, and here this information is used to produce audio-frequency information.On reverse path, be sent to radio telephone system 206 (a) via long-range network from the audio-frequency information of the pcm encoder of PSTN 200 (c).Radio telephone system 206 (a) converts the audio-frequency information of pcm encoder the audio-frequency information of speech coding to, further to transmit in wireless product 206 (a) of system and to handle.
In order to set up the call shown in the dotted line (B), radio telephone system 206 (a) determines at first whether call points to local calling area 190 (c).In addition, radio telephone system 206 (a) determines that another radio telephone system 206 is not positioned at local calling area 190 (c).Determine in response to these, radio telephone system 206 (a) decision converts this audio-frequency information the audio-frequency information of pcm encoder to before the audio-frequency information of speech coding is introduced long-range network 202, thereby can suitably handle it when PSTN 200 (c) receives this audio-frequency information.In addition, radio telephone system 206 selects long-range network 202 that this call is sent to PSTN 200 (c).In another embodiment of the present invention, also can be sent to PSTN 200 (c) to calling by PSTN 200 (a) and long-range network 202 or via atm network 204.
Dotted line (C) illustrates the path that the second example long-distance telephone between radio telephone system 206 (a) and the PSTN 200 (b) is called out.During this call, be transferred to radio telephone system 206 (b) from the speech coding audio-frequency information of radio telephone system 206 (a) via atm network 204, here, this information is used to produce audio-frequency information.Radio telephone system 206 (b) converts the speech coding audio-frequency information to the pcm encoder audio-frequency information, and the audio-frequency information of pcm encoder is transferred to PSTN 200 (b).On reverse path, be transferred to radio telephone system 206 (b) from the audio-frequency information of the pcm encoder of PSTN 200 (b).Radio telephone system 206 (b) converts the pcm encoder audio-frequency information audio-frequency information of speech coding to, and via atm network 204 audio-frequency information of speech coding is transferred to radio telephone system 206 (a), further to transmit and to handle.
In order to set up the calling shown in the dotted line (C), it is to point to the PSTN 200 that is positioned at local calling area 190 (b) that radio telephone system 206 (a) is at first determined to call out, and definite radio telephone system 206 (b) also is positioned at local calling area 190 (b).Determine that in response to these radio telephone system 206 (a) decision is transferred to radio telephone system 206 (b) to the audio-frequency information of speech coding.In addition, radio telephone system 206 (a) is selected by atm network 204 and radio telephone system 206 (b) calling to be sent to PSTN 200 (b).In addition, radio telephone system 206 (a) notice radio telephone system 206 (b) points to PSTN 200 (b) calling out and instructs radio telephone system 206 (b) that the audio-frequency information of speech coding is converted to the audio-frequency information of pcm encoder, and the audio-frequency information of this pcm encoder will be transferred to PSTN 200 (b).Can maybe can carry out this instruction to the part of this instruction by transmitting additional data as notification procedure.
Fig. 3 is the block diagram of formation according to the radio telephone system 206 (a) of the cellular telephone system of one embodiment of the invention.Subscriber unit 300 (a) and (b) dock with base station 302 (a) with (b), and transmission and receive audio-frequency information with the digital form coding via radio frequency (RF) signal.Base station 302 (a) and (b) be coupled to honeycomb fashion interconnects subsystems (CIS) 304 in the base station controller (BSC) 306.Call control processor (CCP) 308 is coupled to CIS304 and original location register (HLR) 310.Selector system 312 is selected between a plurality of signals that arrive with soft switch (hand-Off) state from subscriber unit 300, and this system also is coupled to CIS 304 and signal processing system 314.PSTN interface 316 is coupled to the PSTN 200 (a) of Fig. 2, and atm interface 318 is coupled to the atm network 204 of Fig. 2, and these two interface systems all are coupled to signal processing system 314.
In the example call that is started by subscriber unit 300 (a), produce the call request that comprises relevant telephone number by subscriber unit 300 (a), this request is transferred to CCP 308 by base station 302 (a) and CIS 304.It is various definite that CCP308 uses 310 pairs of these calls of HLR to carry out according to relevant telephone number.HLR 310 is databases, and it has stored the information of relevant various local calling area 190.In preferred embodiment, this information comprises whether the area code of each local calling area and another radio telephone system 206 or other telecommunication signal treatment system with compatible speech coding capacity are positioned at this local calling area 190.HLR310 also comprise with each local calling area in various interchange codes and with the information of the related exchange distance dependent of another radio telephone system 206.Use HLR 310, CCP 308 determines that at first whether calling is local or long distance, and secondly CCP determines whether calling points to PSTN 200 or another radio telephone system 206.If call out be long distance and point to PSTN 200, then CCP 308 determines further whether radio telephone systems 206 are positioned at the same local calling area 190 that receives PSTN 200 places.Determine that according to these CCP 308 carries out exercises during call setup, to set up according to call of the present invention.
If CCP 308 determines that wireless subscriber unit 300 (a) needs to point to the long distance call of PSTN 200, and second radio telephone system 206 is positioned at the same local calling area that receives PSTN 200 places, and then CCP308 sets up the link that arrives radio telephone system 206 via atm network 204.In addition, CCP 308 also instructs second radio telephone system 206 to set up and receives being connected of PSTN 200, the information (before this pcm encoder audio-frequency information is transferred to PSTN 200) of preparing to receive the audio-frequency information of speech coding and the audio-frequency information of this speech coding being converted to pcm encoder.In addition, CCP 308 instructions second radio telephone system 206 is the audio-frequency information (before the audio-frequency information of this speech coding is transferred to atm network 204) that converts speech coding from the pcm encoder audio-frequency information that receives PSTN 200 to.As mentioned above, this instruction can be used as the part of notification procedure, maybe can be undertaken by transmitting additional data.CCP 308 also is configured to CIS 304, selector system 312 and signal processing system 314 the speech coding audio-frequency information from subscriber unit 300 (a) is delivered to atm interface 318, and this interface points to atm network 204 to the audio-frequency information of this speech coding then.Subscriber unit 300 (a) is preceding being delivered to by base transceiver station 302 (a), transmits via the atm interface 318 speech coding audio-frequency informations relevant with the example call that receive by signal processing system 314, selector system 312 and CIS 304.
If CCP 308 determines that wireless subscriber unit 300 (a) needs to point to the long distance call of the interior PSTN 200 of local calling area 190 (lacking radio telephone system 206), then the long-range network 202 by Fig. 2 is established to the connection that receives PSTN 200.Network processes should be called out, and CCP 308 is configured to CIS 304 via selective system 312 audio-frequency information to be delivered to signal processing system 314.CCP 308 also is configured to signal processing system 304 the speech coding audio-frequency information is converted to the audio-frequency information of pcm encoder and the audio-frequency information of this pcm encoder is transferred to long-range network interface 320.In another embodiment of the present invention, signal processing system 314 can be configured to the audio-frequency information of speech coding is delivered to PSTN interface 316, and this interface is sent to long-range network 202 to these data along selected path by the PSTN200 (a) of Fig. 2.Oppositely, long-range network 202 and long-range network interface 320 by Fig. 2 are transferred to signal processing system 314 to the audio-frequency informations from the pcm encoder that receives PSTN 200.CCP 308 further is configured to signal processing system 314 audio-frequency information of pcm encoder is converted to the audio-frequency information of speech coding, and via selector system 312, CIS 304 and base transceiver station 302 (a) this transfer of data is arrived subscriber unit 300 (a).
If CCP 308 determines the local call that wireless subscriber unit 300 (a) (Fig. 2) is asked to PSTN 200 (a), then it is configured to signal processing system 314 the audio-frequency information that converts pcm encoder from the speech coding audio-frequency information of subscriber unit 300 (a) to, and the audio-frequency information of this pcm encoder is transferred to PSTN interface 316.PSTN interface 316 is transferred to PSTN 200 (a) to the audio-frequency information of this pcm encoder then.Oppositely, by the audio-frequency information that PSTM interface 316 receives from the pcm encoder of PSTN 200 (a), PSTN interface 316 this transfer of data to signal processing system 314.Signal processing system 314 converts the audio-frequency information of pcm encoder the audio-frequency information of speech coding to, and by selector system 312, CIS 304 and base transceiver station 302 (a) audio-frequency information of this speech coding is transferred to subscriber unit 300 (a).
When another radio telephone system 206 begins to point to the call of PSTN 200 (a), receive the notice of this call by radio telephone system 206 (a), this notice is pointed to CCP 308.CCP so responds, and is configured to the speech coding audio-frequency information from the request radio telephone system directional signal treatment system 314 relevant with call promptly via the path of PSTN interface 316 foundation with PSTN 200 (a), and atm interface 318.In addition, CCP 308 is configured to signal processing system 314 the audio-frequency information that converts pcm encoder from atm interface 318 and relevant with call speech coding audio-frequency information to, and via PSTN interface 316 audio-frequency information of this pcm encoder is sent to and receives PSTN 200.On reverse path, be transferred to signal processing system 314 via PSTN interface 316 from the audio-frequency information of the pcm encoder that receives PSTN 200.CCP also is configured to signal processing system 314 audio-frequency information of pcm encoder is converted to the speech coding audio-frequency information, and the audio-frequency information of this speech coding is sent to atm interface 318, atm interface 318 is transferred to the audio-frequency information of this speech coding the radio telephone system 206 of being asked via the atm network 204 of Fig. 2.
By handling call in the above described manner, radio telephone system 206 (a) more effectively docks with other telephone network.This be because, call out for the long-distance telephone that points to the interior PSTN 200 of local calling area 190 (also having radio telephone system 206), on long distance A TM network 204, transmit data, therefore saved the long-range network resource with more effective speech coding form.In addition, by audio-frequency information, can on bigger degree, use more effective speech coding audio-frequency information form in atm network 204 or another packet-based this speech coding of transmission over networks.This is because atm network 204 is a kind of packet-based networks, this network can be more effectively between various calls and the Internet resources that are assigned usefulness in other communication period that this network carried out.This is opposite with special-purpose connected system, because special-purpose connected system is no matter whether the transmission data all utilize Internet resources during call.Compare with the audio-frequency information that uses pcm encoder, by during growing Distance Transmission, using the audio-frequency information of speech coding via atm network 204, basically can reduce the required grouping number of conduct telephone calls, thereby discharge the network capacity that is used for other call, and minimizing is used for wireless phone service user and radio telephone system operating personnel either party or both telephone call costs.
So, a kind of improving one's methods and system that radio telephone system docks with a telephone network that make described.Other embodiments of the invention will become obviously to those skilled in the art.The example embodiment that is provided is mainly used in the purpose of signal, can not be it as limitation of the present invention.

Claims (32)

1.一种位于本地呼叫区域内的无线电话系统，其特征在于包括：1. A wireless telephone system within a local calling area, characterized in that it comprises: 信号处理系统；signal processing system; 信号传输系统；以及signal transmission systems; and 呼叫处理系统，用于接收一电话呼叫请求，确定所述电话呼叫请求是指向位于第二本地呼叫区域内的公共电话交换网，确定一电信信号处理系统也是位于所述第二本地呼叫区域内，使所述信号处理系统和所述信号传输系统配置成把与所述电话呼叫请求有关的语音编码的音频信息传输到所述电信信号处理系统。a call processing system for receiving a telephone call request, determining that said telephone call request is directed to a public switched telephone network located within a second local calling area, determining that a telecommunications signal processing system is also located within said second local calling area, The signal processing system and the signal transmission system are configured to transmit speech encoded audio information related to the telephone call request to the telecommunications signal processing system. 2.如权利要求1所述的无线电话系统，其特征在于所述呼叫处理系统还确定所述无线电话系统和所述电信信号处理系统之间存在基于分组的网络连接，经由所述基于分组的网络连接来传输所述语音编码的音频信息。2. The radiotelephone system of claim 1, wherein said call processing system further determines that a packet-based network connection exists between said radiotelephone system and said telecommunications signal processing system, via said packet-based A network connection is used to transmit the speech encoded audio information. 3.如权利要求2所述的无线电话系统，其特征在于所述呼叫处理系统把指向第二本地呼叫区域内所述公共电话交换网的所述电话呼叫请求通知所述电信信号处理系统。3. The radiotelephone system of claim 2, wherein said call processing system notifies said telecommunications signal processing system of said telephone call request directed to said public switched telephone network within a second local calling area. 4.如权利要求3所述的无线电话系统，其特征在于所述呼叫处理系统指令所述电信信号处理系统把所述语音编码的音频信息转换成非语音编码的音频信息，并把所述非语音编码的音频信息传送到所述公共电话交换网。4. The radiotelephone system of claim 3, wherein said call processing system instructs said telecommunications signal processing system to convert said speech-encoded audio information into non-speech-encoded audio information and to convert said non-speech-encoded audio information into The speech encoded audio information is transmitted to said public switched telephone network. 5.如权利要求2所述的无线电话系统，其特征在于所述基于分组的网络连接是一种异步传递模式的网络连接。5. The radiotelephone system of claim 2, wherein said packet-based network connection is an asynchronous transfer mode network connection. 6.如权利要求1所述的无线电话系统，其特征在于还包括：6. The wireless telephone system of claim 1, further comprising: 数据库，用于存储一组本地呼叫区域，电信信号处理系统是否位于所述本地呼叫区域组中的每个本地呼叫区域。A database for storing a set of local calling areas, whether the telecommunications signal processing system is located in each local calling area in the set of local calling areas. 7.如权利要求6所述的无线电话系统，其特征在于所述数据库还存储与所述本地呼叫区域有关的区域代码。7. The radiotelephone system of claim 6 wherein said database further stores area codes associated with said local calling area. 8.如权利要求1所述的无线电话系统，其特征在于所述本地呼叫区域定义为，与所述无线电话系统相比，可以较低的成本从中把音频信息传输到所述公共电话交换网的区域。8. The radiotelephone system of claim 1, wherein said local calling area is defined as, from which audio information can be transmitted to said public switched telephone network at a lower cost than said radiotelephone system Area. 9.如权利要求1所述的无线电话系统，其特征在于所述本地呼叫区域定义为，可从中把音频信息传输到所述公共电信交换网而不必使用长距离电信服务的区域。9. The radiotelephone system of claim 1, wherein said local calling area is defined as an area from which audio information can be transmitted to said public switched telecommunications network without using long distance telecommunications services. 10.如权利要求1所述的无线电话系统，其特征在于还包括：10. The wireless telephone system of claim 1, further comprising: 用于产生所述电话呼叫请求的用户单元。A subscriber unit for generating said telephone call request. 11.如权利要求1所述的无线电话系统，其特征在于所述电信信号处理系统是一第二无线电话系统。11. The radiotelephone system of claim 1, wherein said telecommunications signal processing system is a second radiotelephone system. 12.一种用于在具有用户单元的无线电话系统中对电话呼叫进行处理的方法，其特征在于包括以下步骤：12. A method for processing a telephone call in a wireless telephone system having a subscriber unit, comprising the steps of: (a)接收来自所述用户单元的呼叫请求；(a) receiving a call request from said subscriber unit; (b)确定所述呼叫请求是指向公共电话交换网；(b) determining that the call request is directed to the public switched telephone network; (c)确定所述公共电话交换网是位于与所述无线电话系统不同的本地呼叫区域中；(c) determining that said public switched telephone network is located in a different local calling area than said wireless telephone system; (d)确定所述电信信号处理资源是位于所述不同的本地呼叫区域中；(d) determining that said telecommunications signal processing resource is located in said different local calling area; (e)把所述电话呼叫请求通知所述第二无线电话系统；以及(e) notifying said second wireless telephone system of said telephone call request; and (f)把语音编码的音频信息传输到所述第二无线电话系统。(f) transmitting speech encoded audio information to said second wireless telephone system. 13.如权利要求12所述的方法，其特征在于还包括以下步骤：13. The method of claim 12, further comprising the steps of: 确定所述无线电话系统和所述第二无线电话系统之间基于分组的连接是可供使用；以及determining that a packet-based connection between the wireless telephone system and the second wireless telephone system is available; and 经由所述基于分组的连接来传输所述语音编码的音频信息。The speech encoded audio information is transmitted via the packet-based connection. 14.如权利要求12所述的方法，其特征在于：14. The method of claim 12, wherein: 所述电话呼叫请求包括电话号码；以及the phone call request includes a phone number; and 使用所述电话号码进行步骤(b)、(c)和(d)。Steps (b), (c) and (d) are performed using said telephone number. 15.如权利要求12所述的方法，其特征在于还包括以下步骤：15. The method of claim 12, further comprising the steps of: 存储与一组电信信号处理系统有关的一组区域代码。Stores a set of area codes associated with a set of telecommunications signal processing systems. 16.如权利要求15所述的方法，其特征在于还包括以下步骤：16. The method of claim 15, further comprising the steps of: 存储与所述区域代码有关的一组交换代码，所述交换代码也与所述电信信号处理系统组有关。A set of exchange codes associated with said area code is stored, said exchange code also associated with said group of telecommunication signal processing systems. 17.如权利要求12所述的方法，其特征在于所述电信信号处理系统是一组无线电话系统。17. The method of claim 12, wherein said telecommunications signal processing system is a wireless telephone system. 18.一种用于处理电话呼叫的方法，其特征在于包括以下步骤：18. A method for handling a telephone call, comprising the steps of: (a)经由基于分组的网络把来自第一无线电话系统的语音编码音频信息传输到电信信号处理系统；(a) transmitting the speech-encoded audio information from the first wireless telephone system to the telecommunications signal processing system via the packet-based network; (b)在所述电信信号处理系统处对所述语音编码的音频信息进行语音解码，从而产生语音解码的音频信息；以及(b) speech-decoding said speech-encoded audio information at said telecommunications signal processing system, thereby producing speech-decoded audio information; and (c)把所述音频信息传输到公共电话交换网。(c) transmitting said audio information to a public switched telephone network. 19.如权利要求18所述的方法，其特征在于还包括以下步骤：19. The method of claim 18, further comprising the steps of: 接收来自用户单元的启动电话呼叫的请求，该用户单元是所述第一无线电话系统的一部分；receiving a request to initiate a telephone call from a subscriber unit that is part of said first wireless telephone system; 确定所述电话呼叫是否指向所述公共电话交换网；以及determining whether the telephone call is directed to the public switched telephone network; and 确定所述电信信号处理系统是否可以比所述无线电话系统更低的成本把音频信息传输到所述公共电话交换网。Determining whether said telecommunications signal processing system can transmit audio information to said public switched telephone network at a lower cost than said wireless telephone system. 20.如权利要求19所述的方法，其特征在于还包括以下步骤：20. The method of claim 19, further comprising the steps of: 接收来自所述公共电话交换网的非语音编码的音频信息；receiving non-speech encoded audio information from said public switched telephone network; 使用所述电信信号处理资源对所述非语音编码的音频信息进行语音编码，从而产生语音编码的音频信息；以及speech encoding the non-speech-encoded audio information using the telecommunications signal processing resources, thereby producing speech-encoded audio information; and 经由所述ATM网络把所述语音编码的音频信息传输到所述无线电话系统。The speech encoded audio information is transmitted to the wireless telephone system via the ATM network. 21.一种用于在具有用户单元并利用语音编码的无线电话系统内处理电话呼叫的方法，其特征在于包括以下步骤：21. A method for handling a telephone call in a wireless telephone system having a subscriber unit and utilizing speech coding comprising the steps of: (a)接收来自所述用户单元的电话呼叫请求；(a) receiving a telephone call request from said subscriber unit; (b)确定所述电话呼叫请求是指向位于本地呼叫区域内的公共电话交换网，以及第二无线电话系统是位于所述本地呼叫区域内；(b) determining that said telephone call request is directed to a public switched telephone network located within a local calling area, and that a second wireless telephone system is located within said local calling area; (c)把语音编码的音频信息传输到所述第二无线电话系统；(c) transmitting speech-encoded audio information to said second wireless telephone system; (d)在所述第二无线电话系统处对所述语音编码的音频信息进行语音解码，从而产生语音解码的音频信息；以及(d) speech decoding said speech encoded audio information at said second wireless telephone system, thereby producing speech decoded audio information; and (e)把所述语音解码的音频信息传输到所述公共电话交换网。(e) transmitting said speech decoded audio information to said public switched telephone network. 22.如权利要求21所述的方法，其特征在于还包括以下步骤：22. The method of claim 21, further comprising the steps of: 指令所述第二无线电话系统建立与所述公共电话交换网的连接。Instructing the second wireless telephone system to establish a connection with the public switched telephone network. 23.如权利要求21所述的方法，其特征在于还包括以下步骤：23. The method of claim 21, further comprising the steps of: (f)接收来自所述公共电话交换网的非语音编码的反向路径音频信息；(f) receiving non-speech encoded reverse path audio information from said PSTN; (g)在所述第二无线电话系统中对所述非语音编码的反向路径音频信息进行语音编码，从而产生语音编码的反向路径音频信息；以及(g) speech encoding said non-speech encoded reverse path audio information in said second wireless telephone system, thereby producing speech encoded reverse path audio information; and (h)把所述语音编码的反向路径音频信息传输到所述无线电话系统。(h) transmitting said speech encoded reverse path audio information to said wireless telephone system. 24.如权利要求21所述的方法，其特征在于步骤(e)包括以下步骤：24. The method of claim 21, wherein step (e) comprises the steps of: 经由基于分组的网络来传输所述语音编码的音频信息。The speech encoded audio information is transmitted via a packet based network. 25.如权利要求21所述的方法，其特征在于所述非语音编码的音频信息是经脉码调制编码的音频信息。25. The method of claim 21, wherein said non-speech coded audio information is PCM coded audio information. 26.一种位于本地呼叫区域内的电信信号处理系统，其特征在于包括：26. A telecommunications signal processing system located within a local calling area, characterized by comprising: 信号处理子系统；Signal processing subsystem; 信号路由选择系统；以及signal routing systems; and 控制系统，用于接收来自不同本地呼叫区域内无线用户系统并指向所述本地呼叫区域内公共电话交换系统的电话呼叫的通知，使所述信号处理系统配置成把与来自所述无线电话系统的所述电话呼叫有关的语音编码音频信息转换成非语音编码的音频信息，并使所述信号路由选择系统配置成按路由把所述音频信息发送到所述公共电话交换系统。a control system for receiving notification of a telephone call from a wireless subscriber system in a different local calling area directed to a public telephone switching system in said local calling area, causing said signal processing system to be configured to communicate with a call from said wireless telephone system Speech-encoded audio information associated with the telephone call is converted to non-speech-encoded audio information, and the signal routing system is configured to route the audio information to the public telephone switching system. 27.如权利要求26所述的电信信号处理系统，其特征在于所述控制系统还使所述信号处理系统配置成把来自所述公共电话交换网与所述电话呼叫有关的经脉码调制编码的反向路径音频信息转换成语音编码的反向路径音频信息，并使所述信号路由选择系统配置成按路由把所述语音编码的反向路径音频信息发送到所述无线电话系统。27. The telecommunications signal processing system of claim 26, wherein said control system further causes said signal processing system to be configured to convert PCM-encoded signals from said public switched telephone network associated with said telephone call The reverse path audio information is converted to speech encoded reverse path audio information, and the signal routing system is configured to route the speech encoded reverse path audio information to the wireless telephone system. 28.如权利要求27所述的电信信号处理系统，其特征在于所述信号路由选择系统经由基于分组的网络按路由发送所述语音编码的音频信息。28. The telecommunications signal processing system of claim 27, wherein said signal routing system routes said speech encoded audio information via a packet based network. 29.一种电信网络，其特征在于包括：29. A telecommunications network, characterized by comprising: 无线电话系统，用于产生与电话呼叫有关的经语音编码的前向路径音频信息；A radiotelephone system for generating speech-coded forward path audio information associated with a telephone call; 公共电话交换网，用于产生与所述电话呼叫有关的经脉码调制编码的反向路径音频信息；以及a public switched telephone network for generating PCM encoded reverse path audio information relating to said telephone call; and 电信信号处理系统，用于把所述经语音编码的前向路径音频信息转换成经脉码调制编码的前向路径音频信息，并把经脉码调制编码的反向路径音频信息转换成语音编码的反向路径音频信息。A telecommunication signal processing system for converting said speech coded forward path audio information into PCM coded forward path audio information and converting the PCM coded reverse path audio information into speech coded reverse path to route audio information. 30.如权利要求29所述的电信网络，其特征在于还包括：30. The telecommunications network of claim 29, further comprising: 基于分组的电信网络，用于在所述无线电话系统和所述电信信号处理系统之间传输所述语音编码的前向路径音频信息和所述语音编码的反向路径音频信息。A packet based telecommunications network for transporting said speech encoded forward path audio information and said speech encoded reverse path audio information between said wireless telephone system and said telecommunications signal processing system. 31.如权利要求30所述的电信网络，其特征在于所述基于分组的网络是异步传递模式的网络。31. The telecommunications network of claim 30, wherein said packet-based network is an asynchronous transfer mode network. 32.如权利要求31所述的电信网络，其特征在于所述电信信号处理系统是第二无线电信系统。32. A telecommunications network as claimed in claim 31, characterized in that said telecommunications signal processing system is a second wireless telecommunications system.
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