I am having problems hearing the other person at the end of the line on pstn calls. The CME has a VIC2-4FXO module and I have the PSTN connection trhough voiceport 0/0/0
The pstn calls terminate on ephone1 which is configured with connection plar. It rings ok both ways both cant hear a thing when the call is picked.
I have done a debug of the ephone detail (Please find debug output and CME running config attached), I notice that after start media (which is when the phones are suposed to start exchanging RTP), there is a message which shows NO LOCAL PHONE MATCH FOR START MEDIA.
I think therein lies the problem(though i am not so sure)
Would really appreciate any help.
No worries. Also we should note that if you have FXO trunks on CME, transfer isn't supported:
PSTN FXO Trunk Lines
Calls placed to or received on an FXO line have restricted Cisco Unified CME services and cannot be transferred by Cisco Unified CME. However, phone users are able to access hookflash-controlled PSTN services using the Flash soft key.
I'd recommend you use the IP PBX mode instead of trunking phone's DNs directly to the FXO port. It's more flexible. You can use line monitoring or phone watching to have users know if everyone is on the phone.
ephone-dn 49 dual-line
ephone-dn 50 dual-line
You need to configure 'ip routing' globally. That is the default configuration--someone configured this box and added 'no ip routing'
which is a misconfiguration and breaks voice traffic.