摘要
分析语音数据在 IP电话网关中的处理过程 ,计算出 RTP/UDP/IP协议的封装开销 ,建立了在有静音压缩条件下的网关中多路编码器输出比特率的数学表达式 ,并利用该表达式计算了网关中各处理器之间在各种处理话路下的最小带宽 ,同时分析了接口带宽利用率与网关的处理密度 N的关系。
The speech signaling process in IP telephony gateway is analyzed. The overhead of RTP-UDP-IP stack of protocols is computed. The mathematic expression to compute the interface bandwidth is presented in the case of silence suppression, and minimum interface bandwidth is computed in the case of various number of voice channels based on the mathematic expression. Finally, the relationship between utilization efficiency of bandwidth and voice channels of IP telephony gateway is analyzed.
出处
《控制与决策》
EI
CSCD
北大核心
2002年第6期894-897,共4页
Control and Decision
基金
中国博士后基金项目
关键词
IP电话
网关
接口带宽
计算
分析
静音压缩
语音编码
INTERNET
Calculations
Communication channels (information theory)
Gateways (computer networks)
Interfaces (computer)
Mathematical models
Network protocols
Speech coding
