Avaya S8300 - Manual (Page 6)

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Trunk Group:
Create a Trunk Group and select “isdn” as the Group Type and a TAC
number based on your switches dial-plan. Ensure “PRI/BRI” is the Carrier Medium, this is
used for ISDN trunks. Set Dial Access to “Y” and Service type is “tie”, this gives the most
universal type of connection. All other prompts are default.
Figure 4. Trunk–Group Administration
Signaling Group: Create a Signaling Group for the PRI D-channel. The Group Type
default is “isdn-pri”; this creates a channel to control the Bearer channels on the T-1 card.
Select the T-1 port that will be used as the Primary D-channel and assign the Trunk Group for
Channel Selection. All other prompts are default.
Figure 3. Signaling-Group D-Channel Configuration