In this post, I will do my best to lay down the basics and the advanced topics around Cisco SIP Gateway configuration and implementation. Problem is, that implementing a Cisco SIP gateway often requires an extra touch, and while widely documented, Cisco SIP Gateway configuration documents often lack the proper structure and context, which makes it very difficult to navigate and find your way to a proper, clean SIP gateway configuration. This is how it’s done, step by step, using SIP.Įdit: I recommended using the SIPgw Config Utility in conjunction with this post So whenever PSTN connection is implemented via an IOS Voice Gateway, the choice should be really between SIP & MGCP. ![]() The slowly dying H323 protocol (ISDN based) is not being developed anymore while SIP (HTTP based) became the industry standard for VoIP. Connecting the Cisco IOS Voice Gateway to CUCM via SIP has been the preferred way to do it in the past couple of years.
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