Emergency Services configuration Page 229 of 258
ESA must be configured and tested on the main office Call Server and the SRG to differentiate between emergency calls originating from IP Phones at each location and calls originating on trunks.
Use the following steps to configure ESA for emergency access at each location:
1Determine the dialing plan (for example, numbering plan) for ESA calls.
2Configure the main office emergency trunk (CAMA or PRI). For EMEA, the following trunks are supported:
•BRIE (Basic Rate
•PRI (Primary Rate Interface per EURO ISDN)
•QSIG on PRI
•DPNSS
•IP tandem trunks on ISDN
3Configure the Virtual Trunk at the main office.
4Configure ESN at the main office.
5Configure ESA at the main office.
6Configure the SRG zone on the main office.
7Configure the ESA Special Number on the main office; for example, the prefix for the SRG zone.
8Test ESDN using a main office telephone.
9Configure the SRG emergency trunk (CAMA or PRI).
10Configure the Virtual Trunk at the MG 1000B.
11Configure ESN at the branch office.
12Configure ESA at the branch office.
13Configure the branch office zone on the branch office.
Note: The branch office zone is required for bandwidth management but does not require ESA parameters.
14Configure the ESN SPN on the branch office.
Main Office Configuration for Survivable Remote Gateway 50 Configuration Guide
