R0106-HP MSR Router Series Interface Command Reference(V7)

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Usage guidelines
Facility Data Link (FDL) is an embedded 4 kbps overhead channel within the ESF format for transmitting
alarm information, performance statistics, or loopback code. FDL uses ANSI T1.403 and ATT TR 54016.
You can change the setting depending on the setting at the far end.
Examples
# Implement AT&T FDL on T1 2/4/0.
<Sysname> system-view
[Sysname] controller t1 2/4/0
[Sysname-T1 2/4/0] 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.
Views
CT1/PRI interface view
Predefined user roles
network-admin
Parameters
esf: Sets the framing format to extended super frame (ESF).
sf: Sets the framing format to super frame (SF).
Usage guidelines
CT1/PRI interfaces support the following framing formats:
• ESF format—Allows you to test the system without affecting the ongoing service.
• SF format—Provides more significant bits for user data transmission because multiple frames can
share the same FSC and signaling information.
Examples
# Set the framing format of T1 2/4/0 to SF.
<Sysname> system-view
[Sysname] controller t1 2/4/0
[Sysname-T1 2/4/0] frame-format sf
idle-code (CT1/PRI interface)
Use idle-code to set the line idle code on a CT1/PRI interface.
Use undo idle-code to restore the default.