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PRI Trunk Configuration
G150 only supports T1 PRI trunks, i.e. up to 24 channels. Control of trunks in sub-tending mode
is driven by Communication Manager, with the exception of certain low level PRI trunk
parameters, which are configurable via Manager. The PRI configuration on Manager is used to
configure PRI lines provided by T1 PRI card installed in the G150. On this same configuration,
the Prefix and Group options apply to the G150 in survivable mode only.
In PRI operation two information elements, TNS (Transit Network Selector) and NSF (Network
Specific Facility) are sent in the call setup to the service provider. On IP Office, the values for
TNS, NSF and the actual phone number presented to the line are determined by parsing the
number dialed through, in sequence, the TNS, Special and Call by Call tabs.
Note also that B-channels within the same line can be brought from different service provides.
Additionally some B-channels can be used 'call by call', that is, use a different service provider
for each call.
To configure a PRI trunk:
1. Click
to receive a configuration form. The Receiving Config from dialog box appears
displaying the IP address of the G150. Enter the G150 system password.
2. Click Line configuration from the Configuration Tree and double-click the PRI Trunk to be
configured.
Figure 53: Manager PRI Trunk|Line Configuration screen
Trunk Configuration
Issue 1 June 2005
113
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