AudioCodes Mediant 1000B User Manual page 439

User's Manual
dedicated Emergency Location Identification Number (ELIN) to each ERL (or zone). When
Lync Server 2010 sends a SIP INVITE message with the PIDF-LO to the PSTN Gateway, it
can parse the content and translate the calling number to an appropriate ELIN. The PSTN
Gateway then sends the call to the PSTN with the ELIN number as the calling number.
This ELIN number is sent to the Emergency Services provider, which sends it on to the
appropriate PSAP according to the ELIN address match in the ALI database lookup.
The ERL defines a specific location at a street address, for example, the floor number of
the building at that address. The geographical size of an ERL is according to local or
national regulations (for example, less than 7000 square feet per ERL). Typically, you
would have an ERL for each floor of the building. The ELIN is used as the phone number
for 911 callers within this ERL.
The figure below illustrates the use of ERLs and ELINs, with an E9-1-1 call from floor 2 at
the branch office:
Figure 26-7: Implementing ERLs and ELINs for E9-1-1 in Lync Server 2010
The table below shows an example of designating ERLs to physical areas (floors) in a
building and associating each ERL with a unique ELIN.
ERL Number
1
2
3
Version 6.8
Table 26-5: Designating ERLs and Assigning to ELINs
Physical Area
Floor 1
Floor 2
Floor 3
26. Configuring Supplementary Services
IP Address
10.13.124.xxx
10.15.xxx.xxx
10.18.xxx.xxx
439 Mediant 1000B Gateway & SBC
ELIN
503 972-4410
503 972-4411
503 972-4412