Example: Configuring a Channelized Interface for ISDN PRI Operation

Setting up the J Series device for ISDN PRI operation is a multipart process. First, you add ISDN PRI service on a channelized interface as shown here. Second, you configure a dialer interface. You can then configure ISDN services such as dial-in, callback, and backup.

In this example, you create the ct1–2/0/0 interface and partition the interface into time slots 1 through 23 for B-channels and time slot 24 for the D-channel. You set the B-channel allocation order to ascending. You also set the traceoptions flag to q921. You select National ISDN-2 (NI2) as the ISDN switch type, set the Q.931 timers to 15, and create a dialer pool called ISDN-dialer-group with a priority of 1.

To configure an ISDN PRI network service on a channelized interface:

1. Create a new interface.

   [edit] user@host# edit interfaces ct1-2/0/0
2. Configure the partition and interface type.
   [edit interfaces ct1-2/0/0] user@host# set partition 1-23 timeslots 1-23user@host# set partition 1-23 interface-type bcuser@host# set partition 24 timeslots 24user@host# set partition 24 interface-type dc

3. Configure a trace options flag.

   [edit interfaces ct1-2/0/0] user@host# set traceoptions flag q921

4. Configure the B-channel allocation order.

   [edit interfaces ct1-2/0/0] user@host# set isdn-options bchannel-allocation ascending

5. Select the ISDN switch type.

   [edit interfaces ct1-2/0/0]user@host# set isdn-options switch-type ni2

6. Configure Q.931 timers.

   [edit interfaces ct1-2/0/0] user@host# set isdn-options t310 15

7. Configure dialer options.

   [edit interfaces ct1-2/0/0]user@host# set dialer-options pool isdn-dialer-group priority 1