[c-nsp] DS3 circuit error

[Jay Hennigan]

Oddiraju, Kiran @ London SMC wrote:
> Hi Guys,
> 
>  
> 
> Our T3 controller is down and the SP has asked me what I am seeing on my
> end. Below is the show controllers command on my router. Could you tell
> me where the problem is based on the output below? 
> 
>  
> 
> Router#sh controllers t3
> 
> T3 3/0 is down.
> 
>   Applique type is Subrate T3
> 
>   Description: Carrier_Circuit_ID  
> 
>   Transmitter is sending remote alarm.

You are sending a signal to the other end reporting that the signal that 
you are receiving is unacceptable.  This is happening because...

>   Receiver is getting AIS.

You are receiving all 1s from the other end.

Typically, this means that there is a problem with the equipment sending 
toward you.  Something upstream has lost signal and is sending an AIS 
(Alarm Indication Signal) to you.  You respond by sending RAI (Remote 
Alarm Indicator) notifying the other end of the bad signal that you are
receiving.

More info here:

http://www.cisco.com/en/US/tech/tk713/tk628/technologies_tech_note09186a0080344194.shtml

which shortens to:

http://tinyurl.com/r6jvzo

--
Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
Impulse Internet Service  -  http://www.impulse.net/
Your local telephone and internet company - 805 884-6323 - WB6RDV