Version 6.6 509 October 2014
Installation & Operation Manual 38. Configuring the PSTN Subsystem
Parameter Name Type
Provisioning
Type
Description
DPNSS Number
Of Virtual
Channels
Integer
0 – 30
Instant Defines the number of virtual channels
for DPNSS protocol.
To configure E1/T1 Trunk’s CAS/ISDN settings:
1. Click
to access the Media Gateway status screen.
2. Select the specific Media Gateway board.
3. In the Navigation pane, select PSTN > DS1 Trunks; the E1/T1 Trunks list is
displayed.
4. Select a DS1 Trunk and then in the configuration pane, click Trunk Settings; the
Trunk Settings screen is displayed
5. In the ISDN/DPNSS and CAS tabs, configure parameters according to the tables
below.
Table
38-23: E1/T1 Trunk’s ISDN/DPNSS Parameters
Parameter Name Type
Provisioning
Type
Description
D-Channel
Configuration
Enum
Primary, Backup,
NFAS, Not ISDN
Trunk
Online Defines D-channel configuration. This
setting is only applicable to ISDN PRI
protocols that support the NFAS and/or D-
channel backup procedures.
Termination Side Enum
User Side,
Network Side
Online
Defines the termination side of the
ISDN trunk.
Configure the parameter as User Side
when the PSTN or PBX side is
configured as Network Side, and vice-
versa.
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