大容量综合媒体网关的设计与实现

针对现有软交换体系结构中接入网关、中继网关、信令网关设备的功能独立,从而导致软交换网络部署时设备过多的情况,提出了软件基于软交换技术SIGTRAN、H.248、MGCP等协议,硬件基于DSP技术实现综合媒体网关的方案,即一台网关设备同时具备接入、中继、信令网关功能,并根据通信设备高可靠性的要求,提出了主备冗余、电路板热插拔概念.根据设计方法实现的综合媒体网关,支持多种协议,完全满足了设计要求,并具备较高的稳定性和可靠性.

Design and Implementation of Large-Capacity Integrated Media Gateway

In the architecture of the softswitch system, the access gateway, trunk gateway and signaling gateway are functionally independent and it results in the excessive equipments of softswitch network deployment. In order to deal with this kind of situation, this paper proposes a multi-service gateway scheme. The software of the scheme is based on SIGTRAN, H.248, MGCP protocols etc. And its hardware is based on DSP technology. It means that it offered the integrated functionality of an access gateway, trunk gateway and signaling gateway in the same gateway equipment. According to the high reliability requirements of the communication equipments, this paper also put forward the concepts of active-standby redundancy and circuit board hot-swap. The large-capacity integrated media gateway supports multiple protocols, fully meets the design requirements and has a high degree of stability and reliability.