Owner's Manual

234 CHAPTER 14: E1-F INTERFACE CONFIGURATION COMMANDS
undo fe1 detect-ais
View E1-F interface view
Parameter None
Description Use the
fe1 detect-ais command to enable AIS test on an interface.
Use the undo fe1 detect-ais command to disable AIS test.
By default, AIS test is performed.
Example # Enable AIS test on E1-F 2/0 interface.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] fe1 detect-ais
fe1 frame-format
Syntax fe1 frame-format { crc4 | no-crc4 }
undo fe1 frame-format
View E1-F interface view
Parameter crc4: Sets framing format to CRC4.
no-crc4: Sets framing format to no-CRC4.
Description Use the
fe1 frame-format command to configure the framing format of the
E1-F interface.
Use the
undo fe1 frame-format command to restore the default, that is,
no-CRC4.
An E1-F interface in framed mode supports both CRC4 and no-CRC4 framing
formats, where CRC4 supports four-bit CRC on physical frames while no-CRC4
does not.
Example # Set the framing format of E1-F interface Serial 2/0 to CRC4.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] fe1 frame-format crc4
fe1 loopback
Syntax fe1 loopback { local | payload | remote }