Command Reference Guide

318 ● t1 set fdl 3Com Router 5000 Family and Router 6000 Family
Command Reference
t1 set fdl
Purpose Use the t1 set fdl command to set the behavior of the specified T1 line on the
FDL in ESF framing.
Use the undo t1 set fdl command to disable FDL of T1.
Syntax t1 line-number set fdl ansi
undo t1 line-number set fdl ansi
Parameters line-number
T1 line number. Valid values are 1 to 28.
fdl
Sets the FDL format of T1.
ansi
Implements ANSI T1.403 FDL.
Default By default, ANSI T1.403 FDL is not configured.
Example On CT3 interface 1/0/0, set the FDL to be ANSI T1.403 compliant for T1 line 1.
<3Com > system-view
[3Com ] interface t3 1/0/0
[3Com -T3 1/0/0] t1 1 set fdl ansi
View This command can be used in the following views:
■ CT3 Interface view
Description FDL is an embedded 4 kbps overhead channel within the ESF format for transmitting
periodical performance report (PPR) statistics or loopback code.
According to ANSI T1.403, the format of PPR is LAPD, and the format of loopback
code is BOP.
The t1 set fdl command only starts PPR transmission. It cannot be used to
enable loopback code transmission or detection.