3Com MSR 30, MSR 50 manual Shdsl wire 2 4-auto-enhanced 4-enhanced 4-standard, Undo shdsl wire

140CHAPTER 5: G.SHDSL INTERFACE CONFIGURATION COMMANDS

Setting margin can affect maximum rate of the line. When line condition is good, you can set a small margin to obtain higher rate. When much noise is around the line, this may cause disconnection however.

By default, current-margin-valueis set to 2 and snext-margin-valueis set to 0.

Example # Set the SNR target margin to 5 on interface ATM 5/0.

<Sysname> system-view

[Sysname] interface atm 5/0

[Sysname-Atm5/0] shdsl snr-margin current 5

shdsl wire

Syntax	shdsl wire { 2 4-auto-enhanced 4-enhanced 4-standard }
	undo shdsl wire
View	ATM (G. SHDSL) interface view
Parameter	2: Two-wire mode.
	4-auto-enhanced: Four-wire auto-switch mode. When this mode is enabled, the
	four-wire enhanced mode is used first when the local end negotiates with the
	remote end. If the remote end is not operating in four-wire enhanced mode, the
	local end uses the four-wire standard mode for negotiation. When four-wire
	auto-switch mode is adopted, the remote end can be set to operate in four-wire
	enhanced mode or four-wire standard mode.

Description

n

4-enhanced: Four-wire enhanced mode. In this mode, the two pairs of the four wires can start negotiation separately; in addition, the remote end must be set to operate in four-wire enhanced mode as well.

4-standard: Four-wire standard mode. In this mode, the two pairs of these four wires must start negotiation at the same time; in addition, the remote end must be set to operate in four-wire standard mode as well.

Use the shdsl wire command to set the operating mode of the current G.SHDSL interface.

Use the undo shdsl wire command to restore the default.

By default, the four-wire G.SHDSL interface operates in four-wire enhanced mode.

The shdsl wire command is available for four-wire G.SHDSL devices only.

Example # Set four-wire G.SHDSL interface ATM 5/0 to operate in four-wire auto-switch mode.