通用型电话网局间信令收发器的设计与实现
摘要
近年来，我国的通信系统发展迅速，已经建立了较为完备的电话交换网络体系。在电话网中，用以建立、保持和解除通信关系、完成通信功能的控制规程称为信令方式(信号方式)，它是传递电话交换接续所必要的信号，是电话交换网的中枢神经。电话网中采取何种信令方式，与交换局采用的控制技术密切相关。随着交换技术由步进制、纵横制向程控制发展，信令系统也从随路信令向公共信道信令发展。我国目前的电话网是数模混合的，所以我国目前的信令系统也处于随路信令和公共信道信令并存的阶段。随着电话通信网向数字化和智能化发展，由随路信令逐步过渡到公共信道信令是当前我国电话网必须解决的一个问题。
针对上述问题，作者设计并实现了一种通用型电话网局间信令收发器。该设备将公共信道信令系统(No．7信令系统)的分层结构应用于随路信令系统(中国1号信令系统)，为交换系统提供了透明的信令传输通道。在无需更改原有任何硬件资源的情况下，实现了由使用1号信令的交换系统向No．7信令系统的平滑过渡，既节约了成本，更为系统的配置提供了灵活的方式。
本文深入研究了信令的收发过程、No．7信令系统及其核心技术，在分析和探讨了全数字程控用户电话交换机技术的基础上，提出了通用型电话信令收发器的设计方案，并对信令收发系统的核心部分——信令业务流程进行了设计与实现。
该信令收发器通过了实际使用测试，测试结果表明，该系统成本低，可靠性高，其技术性能指标均达到ITU—T建议和国家标准。该系统目前已形成产品并投入市场，获得用户好评。
In recent years, the communication system of our country develops rapidly, and the comparatively complete telephone switch network has been set up. Among telephone network, the control rule of using to establish, keep and release communication relation, finish communication function is called signaling mode (signaling way), it is an essential signal to accomplish telephone exchange, and, it is the nerve centre of telephone switch network. That telephone network takes what kind of signaling mode, is closely related to the exchange control technology that exchange office adopts. With the exchange technology developing from
step-by-step system to crossbar system then to programmed system, signaling system develops from channel associated signaling (CAS) to common channel signaling (CCS). Our country present telephone network is mixed by digital mode and analogy mode, so our country present signaling system is at the stage of CAS and CCS commixture. As the communication network of the telephone develops to intelligent and digitization, the transition from CAS to CCS of our country telephone network must be solved progressively.
To above-mentioned problem, author designed and realized a general telephone exchange office signaling transceiver. It makes layer structure of CCS (No.7 signaling system) apply to CAS (China No. 1 signaling system), offers a clear signaling transmission channel for telephone exchange system. Under the condition of not changing any original hardware resource, the device realizes smooth transition for exchange system from No.l signaling to No.7 signaling, which not only economizes cost, but also offers a flexible way for system disposition.
This thesis further investigated signaling receiving and sending process, No.7 signaling system and its key technology. On the basis of analyzing the technology of all digital programmed private branch exchange, put forward the design plan of general telephone signaling transceiver, designed and realized the key part of the signaling transceiver system - signaling call flow.
The transceiver passed actual usage testing, the test result indicated that the system is low-cost and high reliability, its all technique performance indexes come up to ITU recommendation and country standard.
针对上述问题，作者设计并实现了一种通用型电话网局间信令收发器。该设备将公共信道信令系统(No．7信令系统)的分层结构应用于随路信令系统(中国1号信令系统)，为交换系统提供了透明的信令传输通道。在无需更改原有任何硬件资源的情况下，实现了由使用1号信令的交换系统向No．7信令系统的平滑过渡，既节约了成本，更为系统的配置提供了灵活的方式。
本文深入研究了信令的收发过程、No．7信令系统及其核心技术，在分析和探讨了全数字程控用户电话交换机技术的基础上，提出了通用型电话信令收发器的设计方案，并对信令收发系统的核心部分——信令业务流程进行了设计与实现。
该信令收发器通过了实际使用测试，测试结果表明，该系统成本低，可靠性高，其技术性能指标均达到ITU—T建议和国家标准。该系统目前已形成产品并投入市场，获得用户好评。
In recent years, the communication system of our country develops rapidly, and the comparatively complete telephone switch network has been set up. Among telephone network, the control rule of using to establish, keep and release communication relation, finish communication function is called signaling mode (signaling way), it is an essential signal to accomplish telephone exchange, and, it is the nerve centre of telephone switch network. That telephone network takes what kind of signaling mode, is closely related to the exchange control technology that exchange office adopts. With the exchange technology developing from
step-by-step system to crossbar system then to programmed system, signaling system develops from channel associated signaling (CAS) to common channel signaling (CCS). Our country present telephone network is mixed by digital mode and analogy mode, so our country present signaling system is at the stage of CAS and CCS commixture. As the communication network of the telephone develops to intelligent and digitization, the transition from CAS to CCS of our country telephone network must be solved progressively.
To above-mentioned problem, author designed and realized a general telephone exchange office signaling transceiver. It makes layer structure of CCS (No.7 signaling system) apply to CAS (China No. 1 signaling system), offers a clear signaling transmission channel for telephone exchange system. Under the condition of not changing any original hardware resource, the device realizes smooth transition for exchange system from No.l signaling to No.7 signaling, which not only economizes cost, but also offers a flexible way for system disposition.
This thesis further investigated signaling receiving and sending process, No.7 signaling system and its key technology. On the basis of analyzing the technology of all digital programmed private branch exchange, put forward the design plan of general telephone signaling transceiver, designed and realized the key part of the signaling transceiver system - signaling call flow.
The transceiver passed actual usage testing, the test result indicated that the system is low-cost and high reliability, its all technique performance indexes come up to ITU recommendation and country standard.
引文
[1] TMS320C54x DSP Reference Set Volume 1: CPU and Peripherals. 2001
[2] TMS320C54x DSP Controllers Reference Set Volume2: Perpheral library and specific de-vices[Z]. USA: Texas Instruments, 1997.
[3] TMS320C54x DSP Reference Set Volume 4: Applications Guide. USA: Texas Instruments, 1999
[4] TMS320C54x DSP Reference Set Volume 5: Enhanced Peripherals. USA: Texas Instruments, 1999
[5] TMS320C54x C Source Debugger User' s Guide. USA: Texas Instruments, 2001
[6] TMS320C54x DSP Programmer' s Guide. USA: Texas Instruments, 1999
[7] TMS320VC5402 Fixed-Point Digital Signal Processor Data Manual. USA: Texas Instruments, 2000
[8] A-Law and μ-Law Companding Implementations Using the TMS320C54x. USA: Texas Instruments, 2001
[9] DTMF Tone Generation and Detection: An Implementation Using the TMS320C54x. USA: Texas Instruments Application Report, 2001
[10] Using the TMS320C6x McBSP as a High Speed Communication Port. USA: Texas Instruments Application Report, 2002
[11] Improving 32 Channel DTMF Decoders Using the TMS320C5x
[12] Ruben D, Perez. TMS320VC5402 and TMS320UC5402 Bootloader. USA: Texas Instruments Application.Report, March, 2002
[13] IEEE Standard Test Access Port and Boundary-Scan Architecture. IEEE Std 1149.1, 2002
[14] Siwy R. Generation and recognition of DTMF signals with the microcontroller MSP430[Z].Texas Instruments Deutschl and AmbH, 1997
[15] Bagchi S, Mitra S K. An efficient algorithm for DTMF decoding using the sub-band NDFT[A].Proc IEEE Int Symp Circ Syst[C], 1995
[16] Mock P. Add DTMF generation and decoding to DSP-μP designs[J].EDN, 1985
[17] Oppenheim A V, Schafer R W. Digital signal Processing[M]. Prentice Hall Inc, 1975.
[18] Agaroval RC, Sdhaken R, Agrawal BP. Multiplier less implementation
of MF/DTMF receiver. IEEE Trans on Com, 1997
[19] Baugh C R. Design and performance of a digital receiver for tone detection application, IEEE on Com, 1996
[20] Rabiner L R, Schafer R W, Rader C M.The chirp z transform algorithm. IEEE Trans Audio Electroacoust, 1989
[21] Classen T A C, Peek J B. A digital receiver for tone detection application. IEEE on Com, 1986
[22] Beck R, Dempster G. Finite-Precision Goertzel Filters User for Signal Tone Detection. IEEE Trans, 2001
[23] Felder D, Mason C. Efficient Dual-Tone Multifrequency Detection Using the Nonuniform Discrete Fourier Transform. IEEE Signal Processing Letters, 1998
[24] 邮电部电话交换设备总技术规范书
[25] 中国一号信令规范
[26] 现代电话网No．7信令方式
[27] CCITT蓝皮书Vol．Ⅳ．9 No．7信令系统规范
[28] [美]奥本海默A V，谢弗R W．数字信号处理．北京：科学出版社，1980
[29] [美] M 施瓦茨著，柴振明译．信息传输、调制和噪声．北京：北京人民邮电出版社，1979
[30] 杨晋儒，吴立贞等．No．7信令技术手册(修订本)．北京：人民邮电出版社，2001
[31] 杨力波，潘志铂．DSP+FLASH引导装载系统的设计与实现．电子技术应用，2003，3
[32] 刘东．循环冗余校验CRC的算法分析和程序实现．计算机与信息技术，2002，9
[33] 董云．用C语言实现CRC校验计算．计算机与信息技术，2001，8
[34] 张坤．DMA结合McBSP在数据采集系统中的应用设计．电子设计应用，2003，4
[35] 陈朝阳，薛峥，郭胜江．利用Flash实现DSP对多个程序有选择的加载．单片机及嵌入式系统应用，2003，9
[36] 唐冰．TMS320C5410烧写Flash实现并行自举引导．单片机及嵌入式系统应用，2003，5
[37] 孙友伟，潘瑜，傅丰林．TMS320VC5402的并行引导装载方案的研究与设计．电子技术应用，2003，9
[38] 石明卫．基于DSP的多路DTMF检测器的软件实现．现代电子技术，2001，10
[39] 赵霞．双音多频信号产生及解码的研究．微电子学，2001，12
[40] 张仲文．电信网最新控制技术——现代电话网No．7信号方式．北京：电子工业出版社，2000
[41] 廖青，赵晶玲．No．7信令．北京：北京邮电大学出版社，2001
[42] 纪红．七号信令系统．北京：人民邮电出版社，2002
[43] 奚旭镛，陶美君等．通信网的信令与接口．北京：电子工业出版社，2001
[44] 刘益成．TMS320C54x DSP应用程序设计与开发．北京：北京航空航天大学出版社，2002
[45] 戴逸民，梁晓雯，裴小平．基于DSP的现代电子系统设计．北京：电子工业出版社，2002
[46] 张雄伟，陈亮，徐光辉．DSP集成开发与应用实例．北京：电子工业出版社，2002
[47] 张雄伟．DSP芯片的原理与开发应用．北京：电子工业出版社，2001
[48] 戴明桢．TMS320C54x DSP结构、原理及应用．北京：北京航空航天大学出版社，2001
[49] 高振明等．多频互控(MFC)信号的同步接收．山东大学学报，1994
[50] 彭启琮，李玉柏．DSP技术[M]．成都：电子科技大学出版社．1997
[51] 赵振纲，王德．数字处理多频记发器信号收发系统的算法与硬件实现．通信学报，1998
[2] TMS320C54x DSP Controllers Reference Set Volume2: Perpheral library and specific de-vices[Z]. USA: Texas Instruments, 1997.
[3] TMS320C54x DSP Reference Set Volume 4: Applications Guide. USA: Texas Instruments, 1999
[4] TMS320C54x DSP Reference Set Volume 5: Enhanced Peripherals. USA: Texas Instruments, 1999
[5] TMS320C54x C Source Debugger User' s Guide. USA: Texas Instruments, 2001
[6] TMS320C54x DSP Programmer' s Guide. USA: Texas Instruments, 1999
[7] TMS320VC5402 Fixed-Point Digital Signal Processor Data Manual. USA: Texas Instruments, 2000
[8] A-Law and μ-Law Companding Implementations Using the TMS320C54x. USA: Texas Instruments, 2001
[9] DTMF Tone Generation and Detection: An Implementation Using the TMS320C54x. USA: Texas Instruments Application Report, 2001
[10] Using the TMS320C6x McBSP as a High Speed Communication Port. USA: Texas Instruments Application Report, 2002
[11] Improving 32 Channel DTMF Decoders Using the TMS320C5x
[12] Ruben D, Perez. TMS320VC5402 and TMS320UC5402 Bootloader. USA: Texas Instruments Application.Report, March, 2002
[13] IEEE Standard Test Access Port and Boundary-Scan Architecture. IEEE Std 1149.1, 2002
[14] Siwy R. Generation and recognition of DTMF signals with the microcontroller MSP430[Z].Texas Instruments Deutschl and AmbH, 1997
[15] Bagchi S, Mitra S K. An efficient algorithm for DTMF decoding using the sub-band NDFT[A].Proc IEEE Int Symp Circ Syst[C], 1995
[16] Mock P. Add DTMF generation and decoding to DSP-μP designs[J].EDN, 1985
[17] Oppenheim A V, Schafer R W. Digital signal Processing[M]. Prentice Hall Inc, 1975.
[18] Agaroval RC, Sdhaken R, Agrawal BP. Multiplier less implementation
of MF/DTMF receiver. IEEE Trans on Com, 1997
[19] Baugh C R. Design and performance of a digital receiver for tone detection application, IEEE on Com, 1996
[20] Rabiner L R, Schafer R W, Rader C M.The chirp z transform algorithm. IEEE Trans Audio Electroacoust, 1989
[21] Classen T A C, Peek J B. A digital receiver for tone detection application. IEEE on Com, 1986
[22] Beck R, Dempster G. Finite-Precision Goertzel Filters User for Signal Tone Detection. IEEE Trans, 2001
[23] Felder D, Mason C. Efficient Dual-Tone Multifrequency Detection Using the Nonuniform Discrete Fourier Transform. IEEE Signal Processing Letters, 1998
[24] 邮电部电话交换设备总技术规范书
[25] 中国一号信令规范
[26] 现代电话网No．7信令方式
[27] CCITT蓝皮书Vol．Ⅳ．9 No．7信令系统规范
[28] [美]奥本海默A V，谢弗R W．数字信号处理．北京：科学出版社，1980
[29] [美] M 施瓦茨著，柴振明译．信息传输、调制和噪声．北京：北京人民邮电出版社，1979
[30] 杨晋儒，吴立贞等．No．7信令技术手册(修订本)．北京：人民邮电出版社，2001
[31] 杨力波，潘志铂．DSP+FLASH引导装载系统的设计与实现．电子技术应用，2003，3
[32] 刘东．循环冗余校验CRC的算法分析和程序实现．计算机与信息技术，2002，9
[33] 董云．用C语言实现CRC校验计算．计算机与信息技术，2001，8
[34] 张坤．DMA结合McBSP在数据采集系统中的应用设计．电子设计应用，2003，4
[35] 陈朝阳，薛峥，郭胜江．利用Flash实现DSP对多个程序有选择的加载．单片机及嵌入式系统应用，2003，9
[36] 唐冰．TMS320C5410烧写Flash实现并行自举引导．单片机及嵌入式系统应用，2003，5
[37] 孙友伟，潘瑜，傅丰林．TMS320VC5402的并行引导装载方案的研究与设计．电子技术应用，2003，9
[38] 石明卫．基于DSP的多路DTMF检测器的软件实现．现代电子技术，2001，10
[39] 赵霞．双音多频信号产生及解码的研究．微电子学，2001，12
[40] 张仲文．电信网最新控制技术——现代电话网No．7信号方式．北京：电子工业出版社，2000
[41] 廖青，赵晶玲．No．7信令．北京：北京邮电大学出版社，2001
[42] 纪红．七号信令系统．北京：人民邮电出版社，2002
[43] 奚旭镛，陶美君等．通信网的信令与接口．北京：电子工业出版社，2001
[44] 刘益成．TMS320C54x DSP应用程序设计与开发．北京：北京航空航天大学出版社，2002
[45] 戴逸民，梁晓雯，裴小平．基于DSP的现代电子系统设计．北京：电子工业出版社，2002
[46] 张雄伟，陈亮，徐光辉．DSP集成开发与应用实例．北京：电子工业出版社，2002
[47] 张雄伟．DSP芯片的原理与开发应用．北京：电子工业出版社，2001
[48] 戴明桢．TMS320C54x DSP结构、原理及应用．北京：北京航空航天大学出版社，2001
[49] 高振明等．多频互控(MFC)信号的同步接收．山东大学学报，1994
[50] 彭启琮，李玉柏．DSP技术[M]．成都：电子科技大学出版社．1997
[51] 赵振纲，王德．数字处理多频记发器信号收发系统的算法与硬件实现．通信学报，1998