Ft1 Frame-Format - HP 6600 Command Reference Manual

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.
You can however change the setting depending on the setting at the far end.
Examples
# Set ANSI T1.403 FDL on T1-F interface Serial 2/0/0.
<Sysname> system-view
[Sysname] interface serial 2/0/0
[Sysname-Serial2/0/0] ft1 fdl ansi

ft1 frame-format

Use ft1 frame-format to set the framing format on the T1-F interface.
Use undo ft1 frame-format to restore the default.
Syntax
ft1 frame-format { esf | sf }
undo ft1 frame-format
Default
The framing format on the T1-F interface is esf.
Views
T1-F interface view
Default command level
2: System level
Parameters
esf: Sets the framing format on the T1-F interface to ESF.
sf: Sets the framing format on the T1-F interface to SF.
Usage guidelines
T1-F interfaces support two framing formats, SF and ESF. In SF format, multiple frames can share the same
FSC and signaling information, so that more significant bits are available for transmitting user data. The
use of ESF allows you to test the system without affecting the ongoing service.
Examples
# Set the framing format of T1-F interface Serial 2/0/0 to SF.
<Sysname> system-view
[Sysname] interface serial 2/0/0
[Sysname-Serial2/0/0] ft1 frame-format sf
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