Configuring other CE1 interface parameters

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter CE1 interface view.

controller e1 interface-number

N/A

3. Configure the interface description.

description text

By default, the description of an interface is interface-name Interface.

4. Set the line code format.

code { ami | hdb3 }

The default is high density bipolar 3 (HDB3).

5. Enable or disable user data inversion.

data-coding { inverted | normal }

By default, user data inversion is disabled.

6. Set the cable type.

cable { long | short }

The default cable setting is long mode.

7. Set the clock mode.

clock { master | slave }

The default clock mode is slave, which is line clock.

8. Enable automatic clock mode change.

clock-change auto

By default, automatic clock mode change is disabled.

9. Set the line idle code type.

Idle-code { 7e | ff }

The default is 0x7E.

10. Set the type and the number of interframe filling tags.

itf { number number | type { 7e | ff } }

By default:

  • The type of the interframe filling tag is 0x7E.

  • The number of interframe filling tags is four.

11. Set the loopback mode.

loopback { local | payload | remote }

By default, loopback is disabled.

12. (Optional.) Restore the default settings for the CE1 interface.

default

N/A

13. Bring up the CE1 interface.

undo shutdown

By default, a CE1 interface is up.

14. Return to system view.

quit

N/A

15. Enter the view of the synchronous serial interface.

  • In E1 mode:interface serial interface-number:0

  • In CE1 mode:interface serial interface-number:set-number

Make sure the synchronous serial interface is the one created for CE1 interface.

16. Set the CRC mode.

crc { 16 | 32 | none }

The default is 16-bit CRC.