i am trying to  configuredqsic trunk between cme and panasonic pbx.but the controller is down.here is the show command.

cme#show controllers e1

E1 0/2/0 is down.

  Applique type is Channelized E1 - balanced

  Transmitter is sending remote alarm.

  Receiver has loss of signal.

  alarm-trigger is not set

  Version info Firmware: 20100222, FPGA: 13, spm_count = 0

  Framing is CRC4, Line Code is HDB3, Clock Source is Internal.

  Data in current interval (649 seconds elapsed):

     0 Line Code Violations, 0 Path Code Violations

     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 649 Unavail Secs

  Total Data (last 24 hours)

     0 Line Code Violations, 0 Path Code Violations,

     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,

     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 86400 Unavail Secs

what could be the reason?

thanks

kavi