3Com MSR 50, MSR 30 Ft1 itf, Ft1 idlecode 7e ff, Undo ft1 idlecode, Channels on the interface

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T1-F interfaces support two framing formats, that is, 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.

Example # Set the framing format of T1-F interface Serial 2/0 to SF.

<Sysname> system-view

[Sysname] interface serial 2/0

[Sysname-Serial2/0] ft1 frame-format sf

ft1 idlecode

Syntax	ft1 idlecode { 7e ff }
	undo ft1 idlecode
View	T1-F interface view
Parameter	7e: Sets the line idle code to 0x7E.
	ff: Sets the line idle code to 0xFF.
Description	Use the ft1 idlecode command to set the line idle code on the T1-F interface.
	Two types of line idle code are available: 0x7E and 0xFF.
	Use the undo ft1 idlecode command to restore the default, that is, 0x7E.
	The line idle code is sent in the timeslots that are not bundled into the logical
	channels on the interface.
Example	# Set the line idle code to 0x7E on T1-F interface Serial 2/0.
	<Sysname> system-view
	[Sysname] interface serial 2/0
	[Sysname-Serial2/0] ft1 idlecode 7e

ft1 itf

Syntax ft1 itf { number number type { 7e ff } }

undo ft1 itf { type number }

View T1-F interface view

Parameter number number: Sets the number of interframe filling tags (a interframe filling tag is one byte in length). The number argument ranges from 0 to 14.