3-9ParametersNoneDescriptionUse the idle-mark command to set the line idle code of the synchronous serial interface to 0xFF.Use the undo idle-mark command to restore the default, that is, 0x7E.In most cases, a synchronous serial interface uses 0x7E to identify the idle state of the line. You mayneed to set the line idle code to 0xFF to interoperate with network devices that use 0xFF (high level ofall ones) as line idle code.Examples# Set the line idle code of synchronous serial interface Serial 2/0/0 to 0xFF. system-view[Sysname] interface serial 2/0/0[Sysname-Serial2/0/0] idle-markinvert receive-clockSyntaxinvert receive-clockundo invert receive-clockViewSerial interface viewDefault Level2: System levelParametersNoneDescriptionUse the invert receive-clock command to invert the receive-clock signal on the DTE-side synchronousserial interface.Use the undo invert receive-clock command to restore the default.By default, receive-clock signal inversion is disabled on DTE-side synchronous serial interfaces.Sometimes, you may need to invert the receive-clock signal on a DTE-side serial interface to eliminatethe half clock-period delay on the line. This command is necessary only for some special DCE devices.In common applications, clock must not be inverted.Related command: invert transmit-clock and clock.Examples# Invert the receive-clock on DTE-side synchronous serial interface Serial 2/0/0. system-view[Sysname] interface serial 2/0/0[Sysname-Serial2/0/0] invert receive-clock