I have a group of about 15 agents outbound dialing off of my servers remotely. When they reach an interested customer, they transfer the call into and in-group that has my on-site agents to take calls.
The problem is with a handful of random calls when they are transferred, there is one way audio. My agents are unable to hear the off-site agents.
What confuses me is both groups of agents are dialing off of the same physical server cluster, just in different locations. Since they can make outbound and inbound calls individually with no problems, it would make sense that they should be able to transfer calls between the same system and somewhat rule out the firewall.
I've checked logs and the calls seem to run through just fine, no big scary asterisk warnings or anything like that.
Ideas?
Thanks