Troubleshooting Guide

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Introduction
The following is an Application Note for E911 Interoperability of a Cisco Unified Communications Manager 6.0 and Cisco
Emergency Responder 2.0 to a NEC IPX2400 PBX via a Cisco Media Module CMM T1-QSIG trunk. The CUCM system is
connected to a simulated E911 PSAP (Public Safety Answering Point) via a Cisco 3845 w/ CAMA trunk registered using H323.
The Network Topology diagram shows the test set-up for interoperability between the Cisco Unified Communications Manager and
Cisco Emergency Responder connected to the PBX via a T1 QSIG trunk using Cisco WS-SVC-CMM-6T1 MGCP Gateway.
Network Topology
Figure 1. Network Topology or Test Setup
.
Limitations
Unique DID numbers must be used to associate with each Emergency Response Location to allow the return call if the 911 caller is
disconnected.
Each available calling party that might dial 911 from the PBX side must have that calling party number configured in the Manually
Configured Phones screen of the Cisco Emergency Responder.