We have one long distance number that we are having issues with. If we dial it we get nothing but echo, i cant hear the person on the other end and the person on the other end can not hear me. I have tried this from several of our phones, same issue. Called from my cell phone and no problems. I talked to this person and confirmed she hears nothing but the calls are going through.
Where would I start with this issue? I know the call is going through, should i start talking to our LD carrier? or what?
We have 1 outgoing PRI.
P.S - I just tried another number with the same LD area code and got through.
I would suggest opening a case with the telco to check if everything is good from their side.
You can take a packet capture (https://supportforums.cisco.com/docs/DOC-11735) on the phone making the test outbound call, and analyze the stream using Wireshark :
- Statistics -> RTP -> Show all streams
- Check out the IP addresses where the packets are streaming to
- Analyze -> Payload -> forward .au format
You can play the audio back and check if your voice is being sent to the MTP / gateway and if you are receiving any inbound RTP.
Also, an IOS packet capture would help narrow the problem down - http://wiki.wwjcdo.com/w/index.php5?title=Unified_Communications:Infrastructure:IOS_Packet_Capture