Configuring other parameters

1. Enter system view.

system-view

N/A

2. Enter T1 interface view.

controller t1 number

N/A

3. Configure a description.

description text

The default is interface name Interface.

4. Configure the framing format.

frame-format { esf | sf }

The default is esf.

5. Set the line coding format.

code { ami | b8zs }

The default is b8zs.

6. Set the cable type.

cable { long | 0db | -7.5db | -15db | -22.5db | short | 133ft | 266ft | 399ft | 533ft | 655ft }

The default is long 0db.

7. Set the interframe filling tag type.

itf type { 7e | ff }

The default is 0x7E.

8. Set alarm thresholds.

alarm-threshold { ais { level-1 | level-2 } | lfa { level-1 | level-2 | level-3 | level-4 } | los { pulse-detection | pulse-recovery } value }

By default:

• For LOS alarms, the threshold of pulse-detection is 176 and the threshold of pulse-recovery is 22. If the number of pulses detected during the total length of 176 pulse detection intervals is smaller than 22 (the pulse-recovery threshold), a LOS alarm occurs.

• Both AIS alarm threshold and LFA alarm threshold are level-1.

9. Enable loopback and set the loopback mode.

loopback { local | payload | remote }

By default, loopback is disabled.

10. Restore the default settings for the T1 interface.

default

N/A

11. Bring up the T1 interface.

undo shutdown

By default, a T1 interface is up.