[cisco-nas] MICA disconnect reason 0xDF06 while connected

[Anastassios Chatzithomaoglou]

Aaron Leonard wrote:

>> In one of our AS5300 (mica 2.9.4.0) we get a lot of such disconnects:
> 
> 
>>       Disconnect Reason Info:  (0xDF06)
>>         Type (=6 ):  Tx (host to line) data flushing - OK
>>        Class (=31):  Requested by host
>>       Reason (=6 ):  network indicated disconnect
> 
> 
>> These disconnects can happen 5 mins after the user has connected or 30 
>> mins after.
> 
> 
>> The strange thing is that we don't see any errors on the E1 circuit 
>> (neither telco does).
> 
> 
>> Any idea what might be going on?
> 
> 
> This just means that we got a hangup signal from the TDM network for
> that call.  (For example, if you're using ISDN, this would be
> receipt of a Q.931 DISCONNECT.)
> 
> If the user at the other end of the circuit INTENDED to hang up,
> then of course this is not a problem.  If he did NOT intend to
> hang up, then this is a problem.
> 
> Such a problem could be caused by poor circuit quality and/or by
> bad client modem behavior.
> Aaron
> 

We also sometimes get " %CONTROLLER-5-CALLDROP: Controller E1 0, Call DROPPED due to 
excessive errors" on the specific router. But we still don't get any errors on the E1.
Could it be caused by poor circuit quality? If yes, how can we check it?


-- 
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    Chatzithomaoglou Anastasios
Network Design & Operations Center
           FORTHnet S.A.
       <achatz at forthnet.gr>
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