Cisco Systems 8xDMT manual Dmt overhead-framing, Syntax Description

Octal-Port DMT ATU-C Line Card

dmt overhead-framing

dmt overhead-framing

To set the overhead framing mode, use the dmt overhead-framingcommand.To reset this command to the default value, use the no form of this command.

dmt overhead-framing {mode0 mode1 mode2 mode3}

Syntax Description	mode0	Full overhead framing with asynchronous bit-to-modem timing.
	mode1	Full overhead framing with synchronous bit-to-modem timing.
	mode2	Reduced overhead framing with separate fast and sync bytes in the fast and
		interleaved latency buffers respectively.
	mode3	Reduced overhead framing with merged fast and sync bytes, using either the
		fast or interleaved latency buffer.

Defaults

Command Modes

Command History

Usage Guidelines

Mode3.

Profile configuration.

Release	Modification
12.0(5)DA	This command was introduced.
12.1(6)DA	Mode 0 was added.

Note Conditions on the line and the capabilities of the ATU-R CPE affect the achievable value for this parameter. As a result, the overhead framing value to which the line trains may not be the same as the value you configure.

There are two types of ADSL framing:

•Full overhead

•Reduced overhead

There are also two versions of full overhead:

•Asynchronous

•Synchronous

You select the type of ADSL framing by choosing one of four modes:

•Mode 0—Full overhead framing with asynchronous bit-to-modem timing (an enabled synchronization control mechanism).

•Mode 1—Full overhead framing with synchronous bit-to-modem timing (a disabled synchronization control mechanism).

Cisco IOS Release 12.1(6)DA

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