If calls initiated with Exchange Unified Messaging Subscriber Access or Auto-attendant do not connect or are not routed properly, you can troubleshoot the issue as follows:
Integration Utility(Ocsumutil.exe) to verify that the name of
the Office Communications Server Enterprise Voice location profile
matches the fully qualified domain name (FQDN) of the SIP dial plan
that is configured for Unified Messaging.
- Verify that a Unified Messaging IP gateway is created for the
Office Communications Server pool to which the calls are being
routed. If not, use
ExchUCutil.ps1to create the gateway.
- Verify that outbound dialing normalization rules that support
the dialing patterns Unified Messaging sends to Office
Communications Server are defined and that the location profile is
configured to use those normalization rules.