
Incoming Calls on Ribbon SBC/Teams Direct Routing fails with 400 Bad Request
Issue: Incoming Calls on Teams Direct Routing fails with 400 Bad Request Error: Q.850; Cause=95=”some Uri; Invalid Contact Header: Parsing problem (No viable alternative) Ribbon SBC 1000, Firmware 8.0.2v520 Invite to Teams: After 100 Trying, Teams Trunk rejects the call with 400 Bad Request: Why Teams Gateway rejecting this call? If you carefully check the […]

