[cisco-voip] Strange Issue CP-3905

[Jean Carlos Coelho]

i have an strange issue on cp-3905, when i do some calls to external numbers , it works ok, but when the call is from or to DN in the same network, the call is answered i can hear the dial tone in the conversation, but only one side can listen the dial tone at the conversation, only the side that make the call, someone got this problem too?

Thank You