tmnxDS3ChannelMDLMessageType configures the type of MDL message that is transmitted over the DS3 interface. If the value of this object is set to 'none', MDL messages are not transmitted. ds3Path(0) - Enables transmission of the MDL path message. An MDL path message, as defined by ANSI T1.107, is distinguished from idle and test signal messages in that it contains a facility identification code as its final data element. idleSignal(1) - Enables transmission of the MDL idle signal message. An MDL idle signal message, as defined by ANSI T1.107, is distinguished from path and test signal messages in that it contains a port number as its final data element. testSignal(2) - Enables transmission of the MDL test signal message. An MDL test signal message, as defined by ANSI T1.107, is distinguished from path and idle signal messages in that it contains a generator number as its final data element.