HP 7000 dl Router manual Fdl ansi att none, Config#interface t1 1/1

SROS Command Line Interface Reference Guide T1 Interface Configuration Command Set

fdl [ansi att none]

Use the fdl command to configure the format for the facility data link channel on the T1 circuit. FDL channels are only available on point-to-point circuits. Use the no form of this command to return to the default value.

Syntax Description

ansi	Configures the FDL for ANSI T1.403 standard
att	Configures the FDL for ATT TR54016 standard
none	No FDL available on this circuit

Default Values

<format>ansi

Command Modes

(config-t1 1/1)# T1 Interface Configuration Mode required

Functional Notes

T1 circuits using ESF framing format (specified using the framing command) reserve 12 bits as a data link communication channel, referred to as the Facility Data Link (FDL), between the equipment on either end of the circuit. The FDL allows the transmission of trouble flags such as the Yellow Alarm signal. See framing [d4 esf] on page 508 for related information.

Usage Examples

The following example disables the FDL channel for the T1 circuit:

(config)#interface t1 1/1

(config-t1 1/1)#fdl none

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