[asterisk-users] Yellow or Red alarm on TE110P ????

[Don Pobanz]

on February 26, 2007 12:49 PM younss azzayani said 
> i get this message with a red signal on TE110P card:
> *****************
> TE110P: span configured for...
> Calling startuo (flug is 4099)
> wcte1xxp: Setting yellow alarm
> 
> *****************
> what does mean ?

I'm not sure about the middle part of this message but the yellow alarm
part makes sense because if the card does not see a T1 signal coming in,
a red alarm is set. When a piece of equipment goes into red alarm, it
will automatically set the outgoing signal to a yellow alarm. A piece of
equipment seeing this signal knows that the signal it is sending out is
not arriving. 

The X represents a cable break. 
Equipment B is in red alarm
Equipment B sends a yellow alarm back to equipment A
Equipment A is in yellow alarm. 


  |------|                     |------|
  | A    |-------->-----X------|  B   | 
  |      |                     |      |
  |      |--------<------------|      |
  |______|                     |______|

Don Pobanz