VOIP系统“Fast—Connect”功能分析

Analysis the Problem ＂Cannot listen to the color-bell normally about the VOIP telephone＂

简要介绍了VOIP呼叫流程，并利用“Fast Connect”功能成功解决了实际应用过程中“VOIP电话不能正常收听彩铃”的问题。

This article introduced the VOIP call flow briefly, And used ＂Fast Connect＂ function to solve the problem in the practical application process ,Which is ＂the VOIP telephone could not listen to the color-bell normally＂.