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Octal-Port DMT ATU-C Line Card
dmt overhead-framing
19
Cisco IOS Release 12.1(6)DA
dmt overhead-framing
To set the overhead framing mode, use the dmt overhead-framing command.To reset this command to
the default value, use the no form of this command.
dmt overhead-framing {mode0 | mode1 | mode2 | mode3}
Syntax Description
Defaults Mode3.
Command Modes Profile configuration.
Command History
Usage Guidelines
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).
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.
Release Modification
12.0(5)DA This command was introduced.
12.1(6)DA Mode 0 was added.