[cisco-nas] Problems with digital modems (NM-xDM)

[Ahmad Cheikh Moussa]

Hi Aaron,

thanks for your reply. Your assumption is correct. I used
the mica modems.

Yet another question
What happens, if one module fails ?
Could one module influence the other modules so that they
fails too ?

Regards,
  Ahmad


Aaron Leonard wrote:
> Ahmad,
> 
> I assume that you are referring to either MICA HMMs or DMMs
> (6- or 12-port modules) of different hardware revs on the
> same carrier card/NM or to NextPort CSMV/6 modules of
> different revs on the same DFC.
> 
> In the case of MICA, this would definitely be supported
> as HMMs and DMMs are FRUs (field replaceable units.)
> CSMV/6es are not FRUs on NextPort DFCs however so
> I would think it would be quite odd to see different revs
> within the same DFC.
> 
> Regards,
> 
> Aaron
> 
> ---
> 
>>
>> I have a question regarding to digital modems.
>> Is it possible to mix different modem hardware versions on
>> one Network Module ?
>>
>> We have a network module with different versions on it. The digital
>> modems functioned properly for aproximately 2 days, after that
>> one after another was marked as bad. A normal reload was not enough
>> to re-enable the modems. We had to power off the router in order
>> to re-enable them.
>>
>> I'am not sure, whether the problems with this modems relate to the
>> different hardware versions on the network module.
>> Perhaps there is only a hardware failure.
>>
>> We have on other access-router with digital modems no problems.
>> The difference to this network module is that the digital modem
>> hardware version on the other one are all the same.
>>
>> Could this be the reason ?
>> Any hints ?
>>
>> regards,
>>  Ahmad
>>  
>>
> 


-- 
Ahmad Cheikh-Moussa
NetUSE AG
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