Call 4 – Extension Number - Emergency Location Database Set up - MAC Address in MX-ONE and ERL ID manually added in the Intrado ERS portal - Extension Bind

In this example, the call has a valid civic address configured in the Intrado ERS portal, set up using ERL ID manually added by administrator. The ERL ID is "device_home1_46856867360".

Figure 1. ERL ID

Figure 2. Call 4

The extension number 67360 is defined in MX-ONE. There is no number conversion in MX-ONE, so the extension number is sent to Intrado.

In the MX-ONE, the Location ID "device_home1_46856867360" is defined in the Emergency Location database and it is associated with the SIP Phone MAC address.

Figure 3. Emergency Location ID

Figure 4. BSSID/MAC Address

From the SIP Invite, the "FROM" header is used to identify the location (ERL ID) and the "PAI" header is used to identify the callback number and the subscriber. The difference from this call and the call 3 is that the extension bind functionality is used for non-10 digits numbers. As the "PAI" header contains the extension number, Intrado assigns a temporary valid DID number from it´s own DID range. In case the call gets disconnected, the Emergency Response team will be able to reach the person dialing back the number supplied by Intrado and the call will be forwarded to the extension number in the MXONE system via the SIP trunk between MX-ONE/MBG and Intrado.

As this call can be identified by Intrado system, the call is redirected to the PSAP.

Figure 5. SIP Invite

Note that in this case the ERL ID is the MX-ONE Location ID "device_home1_46856867360" and the callback number is a valid phone number (DID) assigned by Intrado system.