This thesis researches and designs media gateway system ISAM-V, which can provide access and control functions for VoIP and has the ability to have smooth transition to the next generation network.
本文旨在设计研究媒体网关系统ISAM - V，使其能提供IP电话接入控制功能，并具备向下一代网络平滑过渡的能力。
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