CABLE FAULTS

       Total number of times that the communications cable was detected as
       missing or invalid.

    DEVICE ERRORS

       Total number of times that a potential device error has been reported.

    FRAMING ERRORS

       Total number of framing errors detected on the line. This counter is not
       supported if the characteristic communications mode is synchronous.

    LOSSES OF CARRIER

       Total number of times that the carrier on the line was lost. This
       attribute is not supported if the characteristic modem control is set
       to none.

    LOSSES OF CLOCK

       Total number of times that the transmit or receive clock was lost.

    RATE FALLBACKS

       Number of times that the DTE changed from the high data rate to the low
       alternate rate. This counter is supported only if the characteristic
       modem options includes rate select, and if the characteristic modem
       control is full.

    TEST INDICATIONS

       Number of times the DCE was put into test mode by the remote system.
       This attribute is not supported if the characteristic modem control is
       set to none.

    TIMES CABLE DETECTED

       Total number of times that a valid communications cable was detected
       following a an error counted by the counter cable faults.

    TIMES DCE NOT READY

       Total number of times that a dce not ready event occurred. This
       attribute is not supported if the characteristic modem control is set
       to none.

    TIMES RESET

       Number of times that the data link client has performed a line reset.

    TRANSMIT ENABLE TIMEOUTS

       Number of times the DCE failed to assert clear to send in response to
       request to send.  This attribute is not supported if the characteristic
       modem control is set to none.