3com MSR 20-20 참조 매뉴얼

C

HAPTER

 15: T1-F I

NTERFACE

 C

ONFIGURATION

 C

OMMANDS

ft1 fdl { ansi | att | both | none }

T1-F interface view

ansi: Adopts ANSI T1.403 for FDL.

att: Adopts AT&T TR 54016 for FDL.

both: Adopts both ANSI T1.403 and AT&T TR 54016 for FDL.

none: Disables FDL.

Use the ft1 fdl command to set the behavior of the T1-F interface on the FDL in 
ESF framing.

Use the undo ft1 fdl command to restore the default.

By default, FDL is disabled.

FDL is an embedded 4 kbps overhead channel within the ESF format for 
transmitting performance statistics or loopback code.

You can however change the setting depending on the setting at the far end.

# Implement ANSI T1.403 FDL on T1-F interface Serial 2/0.

<Sysname> system-view

[Sysname] interface serial 2/0

[Sysname-Serial2/0] ft1 fdl ansi 

ft1 frame-format { esf | sf }

T1-F interface view

esf: Sets the framing format on the T1-F interface to ESF.

sf: Sets the framing format on the T1-F interface to SF.

Use the frame-format command to set the framing format on the T1-F 
interface.

Use the undo frame-format command to restore the default, that is, esf.