Abstract: A method 10 of transmitting traffic in a communications network. The method comprises receiving client signal having a client bit rate and comprising traffic to be transmitted 12 and monitoring an indicator indicative of said client bit rate 12. The method further comprises setting a transmission bit rate at which to transmit the traffic 16. The transmission bit rate is set in dependence on said client bit rate. The method further comprises generating and transmitting a control signal arranged to cause a transmission apparatus to transmit the traffic at the transmission bit rate 18.

Abstract: A method 10 of transmitting traffic in a communications network. The method comprises receiving client signal having a client bit rate and comprising traffic to be transmitted 12 and monitoring an indicator indicative of said client bit rate 12. The method further comprises setting a transmission bit rate at which to transmit the traffic 16. The transmission bit rate is set in dependence on said client bit rate. The method further comprises generating and transmitting a control signal arranged to cause a transmission apparatus to transmit the traffic at the transmission bit rate 18.

Abstract: An optical transmitter system supplies a plurality of different wavelength optical radiation components to a transmission element which, in operation, is connected to the transmitter system for conveying the different wavelength radiation components to a respective receiver. The supply of the wavelength components is interrupted, preferably in response to a loss of the wavelength components at the respective receiver. A timer provides respective restart times which differ one to another for the wavelength radiation components. The supply of the wavelength components is restarted, following an interruption, at the respective restart times provided by the timer.

Abstract: An optical transmitter system supplies a plurality of different wavelength optical radiation components to a transmission element which, in operation, is connected to the transmitter system for conveying the different wavelength radiation components to a respective receiver. The transmitter system detects a loss of a wavelength radiation component at the respective receiver. The supply of the wavelength component is interrupted in response to a detection of loss of the wavelength component at the receiver. A timing circuit provides respective restart times which differ one to another for the wavelength radiation components. The supply of the wavelength component is restarted, following an interruption, at the restart time provided by the timing circuit.

Abstract: An optical transmitter system for supplying a plurality of different wavelength optical radiation components (&lgr;1 to &lgr;n) to a transmission element (2), which, in operation, is connected to the transmitter system for conveying the different wavelength radiation components to a respective receiver (11), is disclosed. The transmitter system comprises means for detecting a loss of a wavelength radiation component at the respective receiver (11) and means (9) for interrupting the supply of the wavelength component in response to a detection of loss of the wavelength component at the receiver. The transmitter system is characterised by timing means (10) capable of providing respective restart times (t1 to tn) which differ one to another for the wavelength radiation components, and means (9) for restarting the supply of the wavelength component, following an interruption, at the restart time provided by the timing means.