Instruction manual
E911 Partition
6-3
Enhanced 911 Service
The following trunks types cannot be assigned to an E911 partition:
■ No Music-On-Hold trunks
■ No Loudspeaker Paging trunks
■ No data trunks
■ No maintenance alarm trunks
■ No unassigned T1 trunks
■ No PRI lines that are not assigned to a B-channel group
You can assign a trunk to only one partition or to the E911 Adjunct. You can 
assign trunks that are already used in pools or as Personal Lines.
CAUTION:
Do not assign a trunk that does not work or is unreliable. You should 
enable system trunk maintenance. The system cannot use trunks that are 
maintenance busy. If an E911 call fails, the system marks that trunk as 
maintenance busy. The next E911 call uses another trunk in the partition 
or overflows to the main pool.
Each partition can have up to 20 digits that include digits 0–9, * (but not in the 
first position), and Pause (entered by pressing the Hold button). If an E911 call 
overflows to the main pool, the system may add prefixed digits.
Follow these steps to program the E911 Partition option:
1. Assign extensions to each partition.
2. Select “Partition” as the E911 option.
3. Program system prefix digits for each partition and for the overflow main 
pool as needed.
4. Enable “Allow-11” as desired.
If an E911 call overflows to the main pool, the ALI information sent 
may not include the exact location of the caller.










