COMSPHERE 6800 Series Nework Management System1-84 August 1994 6800-A2-GB21-10Channel DiagnosticsChannel diagnostics consists of tests and status reports primarily for voice and data channels(including DS1 channels) and their associated hardware. Table 1-12 lists the commands availablefor channel diagnostics. The table contains the command abbreviation, a brief description of whatthe command does, what results are displayed, and whether or not the executed command disruptsNMS operation.Table 1-12(1 of 2)Channel Diagnostic CommandsCommand Name Disruptive Description ResultsBit Error Rate Testbert Yes Places a channel’sendpoints into a loopbackstate, transmits a testbitblock through the loopand counts the number oferrors that occur duringtransmission; or releasesthe channel endpoints fromsuch a state.Displays requested stateand the number of errorsper total number of bitstransmitted. To see resultsexit command, thenexecute again while test isin progress.Channel Loopbackcl Yes Places voice, data, or DS0on a 740/74x-56K intoloopback state; placesDS0 channel on 745 intoloopback state at the TSI;or releases the loopbackstate.Displays requested stateand indicates if thecommand wassuccessfully completed.Channel NetworkLoopbackcnl Yes Sends a loopback code tothe OCU, DSU interface ona DDS channel. It can alsosend a loopback code toan external CSU.Displays requested stateand indicates if thecommand wassuccessfully completed.Channel SystemTestcst Yes Places a specified localchannel’s endpoints into aloop back state, transmitsten 8-bit charactersthrough the loop, andcounts resulting errors.Test results are expressedas pass or fail.Display ControlSignalsdscs No Displays the current stateof the control signals on aspecified data, voice, orDS0 channel on a740/74x-56K, or DS0channel on a 745.Lists the control signalsparticular to the specifiedchannel and the currentstate of each signal.Internal Testit Yes Runs hardware diagnosticson a specified channelendpoint and itsassociated channelmodules.Test results are expressedas pass or fail.
