Nortel Networks Remote Gateway 50 - Manual (Page 27)

Overview Page 27 of 258
Main Office Configuration for Survivable Remote Gateway 50 Configuration Guide
Miscellaneous items
Time of Day
Because the SRG IP Phones, in Normal Mode, receive their clock information
from the main office, which may be located in a different time zone, the main
office must be able to provide a different time of day for these phones.
The time zone of the SRG is configured with the SRG zone at the main office.
The time zone adjusts the main office time for display at the SRG. SRG
telephones then display the correct time of the SRG, rather than that of the
main office. For any configurations using centralized Call Pilot on the main
office with one or more branch offices in separate time zones, the NMS
package is required at the main office for the branch IP Phones.
SRG IP Phone to local PSTN calls
When an SRG IP Phone in Normal Mode dials a local PSTN number, the call
is processed by the main office Call Server. The dialed digits are modified
according to the dialing plan information configured in the zone for the SRG
IP Phone.
The call is configured to be routed over the Virtual Trunk to the branch office.
The SRG then tandems the call to the local PSTN.
Likewise, long distance calls can also be configured.
IP Phone to analog (500/2500-type) telephone calls
When an IP Phone in Normal Mode at the SRG calls an analog (500/2500-
type) telephone of the same SRG, the call is processed at the main office Call
Server. A Virtual Trunk route is selected according to the digits dialed. The
call is routed over a Virtual Trunk to the branch office. The SRG processes
the incoming Virtual Trunk call and terminates it to the local analog (500/
IMPORTANT!
If you use one Access Code for both local and long distance calls, and
that Access Code is associated with a branch office zone, all calls (local
and long distance) are routed through the SRG.