204 CHAPTER 12: FUNDAMENTAL CE1/PRI INTERFACE CONFIGURATION COMMANDS
crc
Syntax crc { 16 | 32 | none }
undo crc
View Synchronous serial interface view
Parameter 16: Adopts 16-bit cyclic redundancy check (CRC).
32: Adopts 32-bit CRC.
none: Disables CRC.
Description Use the
crc command to configure CRC mode for a synchronous serial interface
formed on a CE1/PRI interface.
Use the
undo crc command to restore the default, that is, 16-bit CRC.
Example # Apply 32-bit CRC to a serial interface formed on interface CE1 interface 2/0 in
unchannelized mode.
<Sysname> system-view
[Sysname] controller e1 2/0
[Sysname-E1 2/0] using e1
[Sysname-E1 2/0] quit
[Sysname] interface serial 2/0:0
[Sysname-Serial2/0:0] crc 32
detect-ais
Syntax detect-ais
undo detect-ais
View CE1 interface view, PRI interface view
Parameter None
Description Use the
detect-ais command to enable AIS (alarm indication signal) test on an
interface.
Use the
undo detect-ais command to disable AIS test.
By default, AIS test is performed.
Example # Enable AIS test on E1 2/0 interface.
