140 CHAPTER 5: G.SHDSL INTERFACE CONFIGURATION COMMANDSSetting 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 theline, this may cause disconnection however.By default, current-margin-value is set to 2 and snext-margin-value is set to 0.Example # Set the SNR target margin to 5 on interface ATM 5/0. system-view[Sysname] interface atm 5/0[Sysname-Atm5/0] shdsl snr-margin current 5shdsl wireSyntax shdsl wire { 2 | 4-auto-enhanced | 4-enhanced | 4-standard }undo shdsl wireView ATM (G. SHDSL) interface viewParameter 2: Two-wire mode.4-auto-enhanced: Four-wire auto-switch mode. When this mode is enabled, thefour-wire enhanced mode is used first when the local end negotiates with theremote end. If the remote end is not operating in four-wire enhanced mode, thelocal end uses the four-wire standard mode for negotiation. When four-wireauto-switch mode is adopted, the remote end can be set to operate in four-wireenhanced mode or four-wire standard mode.4-enhanced: Four-wire enhanced mode. In this mode, the two pairs of the fourwires can start negotiation separately; in addition, the remote end must be set tooperate in four-wire enhanced mode as well.4-standard: Four-wire standard mode. In this mode, the two pairs of these fourwires must start negotiation at the same time; in addition, the remote end mustbe set to operate in four-wire standard mode as well.Description Use the shdsl wire command to set the operating mode of the current G.SHDSLinterface.Use the undo shdsl wire command to restore the default.By default, the four-wire G.SHDSL interface operates in four-wire enhanced mode.n 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-switchmode.
