PSTN callers hear no ringback after the Unity AA transfers them to a subscriber. Gateway is 2620 as H.323, at remote site, g.729 codec. I fixed this problem in CM 3.1 by setting service parameter "ToSendH225UserInfoMsg" to true---but I cannot find this parameter in 3.0.
I know for sure that I fixed ( by the help of Csico TAC ) the same no-ringback problem on CallManager 3.0(11) by setting the parameter ToSendH225UserInfoMsg
Jan.
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