Configuring a Channelized T1/E1/ISDN PRI Interface as a Clear Channel

Navigate to the Interfaces level in the configuration hierarchy.

For information about interface names, see Network Interface Naming.

1. In the J-Web interface, select Configuration>Edit Configuration>View and Edit.
2. Next to Interfaces, click Edit.

From the [edit] hierarchy level, enter one of the following:

edit interfaces ct1-3/0/0

edit interfaces ce1-3/0/0

Create the new interface—for example, ct1-3/0/0 or ce1-3/0/0.

1. Next to Interfaces, click Add new entry.
2. In the Interface name box, type one of the following interface names:
   • ct1-3/0/0
   • ce1-3/0/0
3. Click OK.

Configure interface options:

• Specify a transmit clock source—for example, internal. Internal clocking uses the Services Router’s own system clock (the default).

  External clocking uses a signal received from the T1 or E1 interface.

• Describe the physical interface.
• To delay the advertisement of interface transitions from up to down or down to up, set the link hold down time or link hold up time, or both. Set a value in milliseconds from 0 (the default) through 65534—for example, 500.
• To use the channelizable interface as a single clear channel, specify no partition.
• To use subunit queuing on Frame Relay or virtual LAN (VLAN) IQ interfaces, enable the per-unit scheduler.

1. In the Interface table, under Interface name, click the interface you are configuring:.
   • ct1-3/0/0
   • ce1-3/0/0
2. From the Clocking list, select internal.
3. In the Description box, type one of the following descriptions:
   • clear t1 interface
   • clear e1 interface
4. Under Hold time:

   Next to Down, type 500.

   Next to Up, type 500.

5. Under No partition, from the Interface type list, select the type of interface:
   • t1
   • e1
6. From the Scheduler type list, select Per unit scheduler.

1. Enter

   set clocking internal

2. Add a description:
   • For T1 interfaces, enter set description clear t1 interface.
   • For E1 interfaces, enter set description clear e1 interface.
3. Enter

   set hold-time down 500 up 500

4. Specify a clear channel:
   • For T1 interfaces, enter set no--partition interface-type t1.
   • For E1 interfaces, enter set no--partition interface-type e1.
5. Enter

   set per-unit-scheduler

Configure T1 or E1 options:

• Bit error rate test (BERT) algorithm—for example, all ones repeating.
• BERT error rate, a value from 0 through 7—for example, 5.
• BERT period, in seconds, a value from 1 through 240—for example, 5.
• (T1 interfaces only) Line buildout, in feet for cables 655 ft (200 m) or shorter—for example, 0-132—or in decibels for longer cables.
• Framing mode:
  • For T1 interfaces, either superframe or extended superframe (ESF)—for example, ESF
  • For E1 interfaces, G704, G704 without cyclic redundancy check 4 (CRC4), or G703 unframed—for example, G704.
• (T1 interfaces only) Line encoding method—for example, alternate mark inversion (AMI).
• Loopback mode—for example, local.

1. Next to T1 options or E1 options, click Configure.
2. From the Bert algorithm list, select all-ones-repeating.
3. In the Bert error rate box, type 5.
4. In the Bert period box, type 5.
5. For T1 interfaces only, from the Buildout list, select 0-132.
6. From the Framing list:
   • For T1 interfaces, select esf.
   • For E1 interfaces, select g704.
7. For T1 interfaces only, from the Line encoding list, select ami
8. From the Loopback list, select local.
9. Click OK

1. Enter

   set bert-algorithm all-ones-repeating

2. Enter

   set bert-error-rate 5

3. Enter

   set bert-period 5

4. For T1 interfaces only, enter

   set buildout 0-132

5. Set the framing mode:
   • For T1 interfaces, enter set framing esf.
   • For E1 interfaces, enter set framing g704.
6. For T1 interfaces only, enter

   set line encoding ami

7. Enter

   set loopback local

Configure trace options.

1. Next to Traceoptions, select the check box and click Configure.
2. Next to Flag, click Add new entry.
3. From the Flag name list, select all.
4. Click OK until you return to the Interface page.

Enter

set traceoptions flag all

Configure advanced options.

For example, apply configuration settings from one or more groups except the test group.

1. Next to Advanced, click the expand (+) icon.
2. Next to Apply groups except, click Add new entry.
3. In the Value box, type test.
4. Click OK.

Enter

set interfaces apply-groups test