可堆叠VoIP语音板卡的固件程序设计  

Design of the Firmware for Stackable VoIP Card

作　　者：李凤华[1,2] 张策[1,2] 王忠民[3] 李义[2] 

机构地区：[1]北京电子科技学院,北京100070 [2]西安电子科技大学,西安710071 [3]西安邮电学院,西安710121

出　　处：《电信科学》2009年第4期62-67,共6页Telecommunications Science

基　　金：国家"863"计划基金资助项目(No.2007AA01Z472;No.2007AA01Z482)

摘　　要：本文提出了基于IP可堆叠式的VoIP通信应用系统的系统架构,重点介绍了面向IP可堆叠式的VoIP语音板卡的固件程序设计。每块VoIP语音板卡支持8路语音,通过自定义的通信协议可使不同的VoIP语音板卡独立地通过IP互联,实现基于IP可堆叠。自定义通信协议实现了VoIP语音板卡中芯片内部通道之间、VoIP语音板卡上芯片之间、不同VoIP语音板卡之间,以及VoIP语音板卡与管理PC间的通信。VoIP语音板卡控制软件以内核模块方式运行,并在内核模块方式下由VINETIC-2CPE语音芯片中断服务程序激活回调函数,提高了实时性。The architecture of a stackable VoIP telecommunication application system is proposed; and the firmware implementation of the VoIP card based on the IP stackable-oriented attribute is described emphatically. A VoIP card can support 8 voice channels, and the cards can be independently connected with each other through IP by the self-defined communication protocol,the stackable attribute based on IP is realized. This protocol is used to implement the communications among the channels within the voice-chip, among voice-chips within the card, among different VoIP cards, between the VoIP cards and the management PC. To improve the real-time capability, the control software of the VoIP card is running under the kernel module model, and the call-back function is triggered by the interruption service routines of VINETIC-2CPE voice-chip under the kernel module model.

关 键 词：VOIP 内核模块 基于IP可堆叠式语音通信系统 自定义通信协议 回调函数 

分 类 号：TN943.6[电子电信—信号与信息处理] TP311[电子电信—信息与通信工程]