CCM 4.2(3)sr4, 2 server cluster, VG224 w/ SCCP to Bogen Paging system.
I get the FXS to answer, but no voice stream is cut through. VTSP inout shows the access digit (*) begin recieved by the VG, but a buttset hears no DTMF nor voice.
This sounds like CSCsi81450 (http://forums.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Unified%20Communications%20and%20Video&topic=IP%20Telephony&topicID=.ee6c829&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.2cbf3233/0#selected_message), but my VG is running 12.4(15)T...
Config & debug output attached.