32 Setting up the main office
•information which allows the administrator to create an NCS (H.323
Gatekeeper or SIP Redirect Server) entry for the SRG
•if using advanced routing, such as tandem dialing between systems,
local PSTN number for the SRG and the internal SRG routing codes
that will allow the main office to connect to the SRG and to tandem over
the SRG PSTN lines, is required
Use Table4 "SRG information required for the main office configuration"
(page 32) to record the information before setting up the SRG on the main
office server.
Tabl e 4
SRG information required for the main office configuration
SRG parameters
SRG public IP address
H.323 ID (required for requests to NCS)
Each H.323 ID in the node should match SIP endpoint name
for this system in pure SIP environment.
List of types and number of IP Phones
Telephone types are hard-coded to the Terminal Numbers
(TN) and the main office. Therefore, install the same type of IP
Phones to the coordinating record on the SRG.
PSTN number to dial into the SRG (in local mode)
Destination codes (steering codes) to route the main office calls
to the SRG and out through the SRG PSTN lines
IP Ports that affect SRG traffic with the main office and have
been assigned firewall filters
For further information on port configuration, see Converging
the Data Network with VoIP (NN43001-260) or SRG50
Configuration Guide (NN40140-500).
Main office information required by the SRG
The main office administrator must supply numerous main office settings to
the SRG installer so that the SRG can be efficiently configured. In addition,
the main office administrator needs to supply the followinginformation:
•a list of the terminal record numbers (TN)
•a list of BUID (Prime DN)
•if using advanced routing, such as tandem dialing between systems,
main office routing (steering) codes, are required
Nortel Communication Server 1000
Main Office Configuration Guide forSRG 50
NN43001-307 02.02 Standard
Release 5.0 3 December 2007
Copyright© 2005-2007, Nor tel Networks
.