Version 6.6 513 October 2014
Installation & Operation Manual 38. Configuring the PSTN Subsystem
38.7.2 Configuring the IUA/DUA Application
The following entities are relevant to the IUA/DUA application:
Trunk – represents a ISDN/DPNSS link connected to the PSTN network.
UAL Group – represents SCTP association between Media Gateway and the
SoftSwitch.
UAL Interface – represents a single IUA/DUA link transferred over the SCTP
association.
To configure the IUA/DUA application:
1. Configure the Media Gateway board's Trunk type as IUA/DUA and update its
ISDN/DPNSS parameters.
a. Click
to access the Media Gateway status screen.
b. Select the desired Media Gateway board.
c. In the Navigation pane, select PSTN
DS1 Trunks; the DS1 Trunks list is
displayed.
d. In the DS1 Trunks List, select a DS1 trunk and then in the configuration
pane, click Trunk Settings; the Trunk Settings screen is displayed.
e. Change the Protocol Type parameter as follows:
♦ For IUA application configure Trunk's Protocol Type as T1IUA or
E1IUA.
♦ For DUA application configure Trunk's Protocol Type as E1DUA.
f. In the IDSN/DPNSS tab, configure ISDN/DPNSS trunk parameters as
described in the table 'ISDN/DPNSS Trunk Parameters of the Trunk'
described in 'Configuring the CAS/ISDN Application' on page 508.
2. Create and configure a UAL Group for each SCTP association that is to be
established with the SoftSwitch:
a. Click
to access the Media Gateway status screen.
b. Select the desired Media Gateway board.
c. In the Navigation pane, select PSTN
Sigtran UAL Groups; the UAL
Group list is displayed.
d. Use the
or buttons to add or remove entries.
e. Select a specific row and then in the configuration pane, click UAL Group
Settings; the UAL Group Settings screen is displayed.
f. Configure UAL Type parameter as follows (for more information, see
Section table 'UAL Group Properties' on page 480):
♦ For the IUA application, configure UAL Type as IUA.
♦ For the DUA application, configure UAL Type as DUA.
♦ Configure Functionality as SG.
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