I don't understand the problem or know the answer, but I had a quick look at the config file and noticed a couple of issues.
1. In the voice service voip - sip section you bind the SIP control messages to your loopback interface but there is no setting to bind the media mesages to the same interface. These usually go in pairs:
bind control source-interface Loopback0
bind media source-interface Loopback0
2. The dial peer for cvp error is not correct. Ringtone is OK. You have incoming called-number 9292, but unless you have changed it on the CVP side, the number is 92929292.
3. You don't have your pots dial peer under the control of the cvp-survivability service, even though you have defined it.
Sending Complete Bearer Capability i = 0x8090A3 Standard = CCITT Transfer Capability = Speech Transfer Mode = Circuit Transfer Rate = 64 kbit/s Channel ID i = 0xA9839B Exclusive, Channel 27 Calling Party Number i = 0x0083, '55491715' Plan:Unknown, Type:Unknown
There is no Called Party Number (should be 164 from your description) included in the SETUP they send and the 'Sending Complete' bit is set to True so the gateway will attempt to route this called as soon as the SETUP is received, yet it has no destination number (164 which with your config will be expanded to 80000 and routed out dial-peers
So ask your telco why there is no Called Party Number included in the SETUPs they send.