I have a new FreePBX/Asterisk install. We have approx 35 Snom phones and are using a Audio Codes T1 Gateway. What happens is 4-5 times a week we will have a call come in where the outside person can hear us but we cannot hear them it appears to be dead air to us, so we hang up and the outside person will just call back in and get through...
We cannot seem to nail down a reason this is happening.
The only seen one thing i wasnt sure what it was and it happened around the same time.
SIP/29041-000021d4 connected line has changed. Saving it until answer for SIP/AudioCodes-000021d1
I have attached the log file of when the issue happened. The log is from asterisk and from the audio codes gateway.
Incoming call was from 612-916-7443 and the phone that answered the call was 2904 that got the dead air. Call was around 11:08.