R2511-HP MSR Router Series Interface Command Reference(V5)

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<Sysname> system-view
[Sysname] error-diffusion restraint restart-channel serial 2/0:0
fdl
Use fdl to set the behavior of the CT1/PRI interface on the FDL in ESF framing.
Use undo fdl to restore the default.
Syntax
fdl { ansi | att | both | none }
undo fdl
Default
FDL is disabled (none).
Views
CT1/PRI interface view
Default command level
2: System level
Parameters
ansi: Adopts ANSI T1.403 for facilities data link (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.
Usage guidelines
FDL is an embedded 4 kbps overhead channel within the ESF format for transmitting performance
statistics or loopback code.
Examples
# Implement AT&T TR 54016 FDL on interface T1 2/0.
<Sysname> system-view
[Sysname] controller t1 2/0
[Sysname-T1 2/0] fdl att
frame-format (CT1/PRI interface)
Use frame-format to set the framing format on a CT1/PRI interface.
Use undo frame-format to restore the default.
Syntax
frame-format { esf | sf }
undo frame-format
Default
The framing format on a CT1/PRI interface is esf