Nortel Networks Remote Gateway 50 - Manual (Page 238)

Page 238 of 258 Emergency Services configuration
553-3001-207 Standard 2.00 January 2006
Configuring the NRS for ESA SPN
The NRS must be configured for the ESA Special Number (SPN). The NRS
uses the ESA SPN to route the emergency call from the main office to the
branch office.
Nortel recommends that a consistent pattern be followed for all ESA calls.
For example, use “0” + ESN Location code of the branch office node + the
ESDN. An example for location code 725 would be: 0725911. The zero is
recommended to prevent a collision in the ESN data with the HLOC entry.
For more information, refer to IP Peer Networking: Installation and
Configuration (553-3001-213).
Testing the ESDN number
Use Procedure 17 on page 238 to test the ESDN number from any telephone
in the branch office.
Procedure 17
Testing ESDN using an SRG telephone
1 For IP Phones:
a. Dial the ESDN on an SRG IP Phone in Local Mode.
The calls must go out on the emergency trunk(s) in the branch office.
b. Dial the ESDN on an SRG IP Phone in Normal Mode.
The calls must tandem over the Virtual Trunk to the branch office and
go out on the emergency trunk(s) in the branch office. The following
configuration problems can occur:
• The call can receive overflow tones. Use LD 96 to view the digits sent
to the Virtual Trunk (ENL MSGO dch#).
• If the digits look correct on the main office, the NRS might not be
properly configured. If the NRS rejects the call, a diagnostic message
is displayed on the NRS console.
• If the call makes it to the correct branch office (check that it is not
going to the wrong node if the NRS is configured incorrectly), the
branch office is probably rejecting it because it does not know the
digit string. Use LD 96 to view the digits (ENL MSGI {dch#}).