Hi everyone recently i created a SIP-TRUNK connection to an VOIP service provider, the calls works just fine but the ring-back tone since you dial the number until someone answers were unable to hear it!!! Does any one know why???
You received 183 session progress with SDP and it indicates that the ringback tone is sent by your provider.
Also there is always an interoperability issue when you have H323 between CUCM&GW and SIP to Provider.
Why don't you have SIP trunk between CUCM and GW instead of H323?
oh ok great so teh problem is H323, why i have it that way, i dont know i didnt configure it maybe because at first the sip trunk wanst on the plan, i really dont have a lot of knowledge in VOIP, how can i change the h323 to sip??
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