You can modify an existing trunk group or add a new one. In our example, we will add trunk group 6. Before you start, perform Setting up a signaling group.
Procedure
Type add trunk group 6.
The system displays the Trunk Group screen.
In the Group Type field, type ISDN.
ISDN-PRI or ISDN-BRI must be y on the System Parameters Customer-Options (Optional Features) screen.
In the TAC field, type in the trunk access code that conforms to your dial plan.
In the Carrier Medium field, type H.323 (Medpro).
In the Dial Access field, type y.
In the Service Type field, type tie.
In the Signaling Group field, type in the signaling group you created.
