Nortel Networks NN43001-314 - Manual (Page 327)

Emergency Service using Special Numbers (SPN) 327
Figure 116
Zone Emergency Service Information
Emergency Service using Special Numbers (SPN)
Determining the dialing plan for emergency access calls is critical.
In many jurisdictions, the emergency number is a fixed number (for example,
"112" or "999"). The call processor (main office Call Server or MG 1000B
CP PM) cannot have a DN that conflicts with these digits. To dial the
emergency number in this configuration, a Branch Office user must dial the
appropriate Access Code. For example, if AC2 is 9, then the user must dial
"9 999" to make a call to emergency services.
Access to Emergency Service using SPN should be configured in the
following circumstances:
• When the Emergency Service number at the Branch Office is different
from that at the main office.
• When there is more than one number used for accessing Emergency
Service; for example, when there are different numbers for Police, Fire,
and Ambulance services.
• In markets where the ESA feature is not available (outside of North
America and CALA).
To configure Emergency Service using SPN, follow the process outlined
in
"Dialing plan configuration" (page 291) . If MG 1000B PSTN access is
correctly configured, Emergency Service from the Branch Office will already
be present.
Branch Office access to Emergency Service using SPN must be configured
and tested on each call processor (the main office Call Server and the MG
1000B Call Server) to differentiate between emergency calls originating
from IP Phones at each location and emergency calls originating on trunks.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.