3Com 3031 Command Reference Manual page 180

180 C 3: I M C
HAPTER NTERFACE ANAGEMENT OMMANDS
Parameter
ami: Adopts AMI line code format.
hdb3: Adopts HDB3 line code format.
Description
Using the fe1 code command, you can configure line code format for an E1-F
interface. Using the undo fe1 code command, you can restore the default line
code format of interface.
By default, E1-F interfaces adopt hdb3.
The line code of an interface should be set consistent with that of the peer.
Example
Set the line code format of the E1-F interface to AMI.
[3com-Serial0/0/0] fe1 code ami
fe1 frame-format Syntax
fe1 frame-format { crc4 | no-crc4 }
undo fe1 frame-format
View
E1-F interface view
Parameter
crc4: Adopts CRC4 as the framing format for the E1-F interface.
no-crc4: Adopts no-CRC4 as the framing format for the E1-F interface..
Description
Using the fe1 frame-format command, you can configure the framing format for
an E1-F interface. Using the undo fe1 frame-format command, you can restore the
default framing format of the interface.
By default, E1-F interfaces use no-crc4.
Example
Set the framing format for the E1-F interface to CRC4.
[3com-Serial0/0/0] fe1 frame-format crc4
fe1 loopback Syntax
fe1 loopback { local | remote }