Figure 8: Emergency Location Mapping - Grandstream Networks UCM6 Series Manual

To create an Emergency Location Mapping, click on the Add button and the following window will appear.
ELIN
Subnet
Location
Additionally, UCM supports callback now to the original extension that dialed the emergency in case the
call disconnects. If the callee (Emergency number) dials the ELIN to join the caller, the call will be routed
back to the original emergency caller's extension.
Note: The Emergency Location Mapping is only supported for SIP trunk.

Figure 8: Emergency Location Mapping

Table 2: Emergency Location Mapping Parameters
The DID number that will be sent to E911 providers for example, who will
then use it to determine the location of the emergency caller. This number
will be displayed as the caller's CID number and will overwrite the
extension or trunk's CID number (if configured). CID name is not affected.
Warning: If the trunk used for the emergency call has a PAI header
configured, the callee's endpoint may display that information instead of
the ELIN number.
The subnet of the location that will be covered by the ELIN. The UCM will
determine which ELIN to send out based on the subnet that the emergency
caller's phone is in.
The specific area covered by the ELIN. This information is just for the
UCM's administrator's own reference.
UCM6xxx Emergency Calls Guide
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