Direct Routing Call Forwarding after 10 seconds - No Audio
Hello would appreciate some help. I have a client using Teams telephony with a Ribbon SBC for Direct Routing. All appears to be working fine apart from one issue: If a client call forwards to a group using /Settings/calls/if unanswered/ after a delay there is no Audio after the call forward is answered: So an outside caller (Party A) rings Party B(Teams Direct Routing DDI) who call forwards after 10 secs to Teams client Party C. If Party C answers within 10 Secs Audio is ok! If answered after 10 Secs - No Audio. Have ticket open with MS for weeks now and not getting much joy. Checked firewall not blocking anything, checked SBC config, nothing untoward, MS blaming SBC/Firewall, SBC people blaming MS/Firewall,...Just wondering if anyone is having the same issue or any other feedback. thanks