H3C SR6600 Command Reference Manual

Also see for SR6600 SPE-FWM: Configuration guide Configuration guide Configuration guide Command reference Command reference

3-66DescriptionUse the ft1 cable command to set the cable attenuation and length on the T1-F interface.Use the undo ft1 cable command to restore the default, that is, long 0db.You may use this command to adapt signal waveform to different transmission conditions such as thequality of the signal received by the receiver. If the signal quality is good, you can just use the defaultsetting.Examples# Set the cable length to 40.5 meters (133 feet) on T1-F interface Serial 2/0/0. system-view[Sysname] interface serial 2/0/0[Sysname-Serial2/0/0]ft1 cable short 133ftft1 clockSyntaxft1 clock { master | slave }undo ft1 clockViewT1-F interface viewDefault Level2: System levelParametersmaster: Uses the internal clock as the clock source.slave: Uses the line clock as the clock source.DescriptionUse the ft1 clock command to configure the clock source for the T1-F interface.Use the undo ft1 clock command to restore the default, that is, line clock.When the T1-F interface is working as DCE, choose the internal clock for it. When it is working as DTE,choose the line clock for it.When the T1-F interfaces on two routers are directly connected, one interface must work in masterclock mode to provide the clock source while the other in slave clock mode to accept.When the T1-F interface on your router is connected to an exchange, it is working as DTE and thereforemust be configured with the slave clock mode to accept the line clock provided by the exchange workingas DCE.Examples# Use the internal clock as the clock source on T1-F interface Serial 2/0/0. system-view[Sysname] interface serial 2/0/0[Sysname-Serial2/0/0] ft1 clock master