3Com MSR 30, MSR 50 manual Detect-ais, Crc 16 32 none, Syntax detect-ais Undo detect-ais

204CHAPTER 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-aiscommand to enable AIS (alarm indication signal) test on an interface.

Use the undo detect-aiscommand to disable AIS test.

By default, AIS test is performed.

Example # Enable AIS test on E1 2/0 interface.