VoIP与二线电话的PCM时隙交换设计  

Design on PCM Timeslot Switching between VoIP and 2-wire Telephone

作　　者：宋桂景[1] 班亚明[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2012年第1期11-13,46,共4页Radio Engineering

摘　　要：针对不同网络间的话音通信设计需求,论述了利用内嵌语音网关模块在网络电话(Voice over Internet Protocol,VoIP)与二线模拟电话之间进行话音脉冲编码调制(PCM)时隙交换的设计方案,给出了硬件实现原理和软件设计流程,对话音通信中内VoIP模块性能、PCM信号接口电平的稳定性以及模块间串口包通信的可靠性进行了详细分析。Aiming at different design requirements of voice communication between network, this paper discusses the design scheme of voice pulse coding modulation （PCM） timeslot switching between VoIP and 2-wire analog telephone by using in-line tone gateway module. It presents the hardware implementation principle and software design process and analyzes in detail the in-line VoIP module performance in voice communication, interface level stability of PCM signal and serial communication reliability between modules.

关 键 词：话音 VOIP PCM时隙交换 重传 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]