I have preaty straight congig LAN --- CCM --- H.323 --- PSTN. CCM is 4.1(2), gateway is 1760 with 12.3(11)T7, connection to PSTN is with three VIC2-2BRI.
Occasionally PSTN side hears static distortions or cant here anything (one-way voice) for both incoming and outgoing calls. When call is closed and same number is immediately redialed there are no problems in conversation.
All this problems happen on different BRI ports, so I dont think this is a telecom problem.
All counters form show interfaces, show controllers bri, show controllers voice dont display any errors.
Any ideas for debug would be appreciated.