Network Issues from the PSTN to the Mediation Server
Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
You can troubleshoot network issues from the public switched telephone network (PSTN) to the Mediation Server as follows:
Ping the IP address of the PSTN gateway from the Mediation Server. If there is no answer, there is a connectivity issue.
Check the event log of the Mediation Server for error messages that could be relevant. For details about relevant Office Communications Server events, see Appendix A: Enterprise Voice-Related Events.
Start Performance Monitor and add the Mediation Server – Inbound Calls object. This enables you to view the Mediation Server counter values. For details about relevant Office Communications Server performance counters, see Appendix B: Enterprise Voice-Related Performance Counters.