I faced a strange problem when transferred call from AA to Operator.
PSTN > AA > Operator : the operator can hear voice but the customer can't hear the voice.
Local Ext > AA > Operator : its work fine.
PSTN > Local number : its fine
I got below log on the CME terminal logger:
Jun 30 12:01:48.588: %SIP-3-BADPAIR: Unexpected event 25 (SIPSPI_EV_CC_CALL_RESUME) in state 20 (SIP_STATE_INIT_XFER) substate 0 (SUBSTATE_NONE)
We have CME ver. : (C3825-SPSERVICESK9-M), Version 12.4(22)YB1,and CUE 3.2
The CME connected to egress gateway through SIP trunk.
can you help ?