[Asterisk-Users] E1 Red Alarm

[Bruce Ferrell]

back in my "real" telephone days, a red alarm meant the near end was not 
receiving signal.  A yellow means the far end is not receiving signal.

Nicholas Bachmann wrote:
> Howdy -
> 
> I'm trying to get a Malaysian PRI E1 up on a TE410P, with no luck.  
> Right now, the setup is
> 
> Telco -> HDSL -> WorldDSL UTU801-> 2 BNC E1 -> balun -> crossover -> TE410P
> 
> Right now, the CSU/DSU-ish WorldDSL box has a green light indicating E1 
> sync, but the TE410P shows a red alarm.  I checked the card by plugging 
> the crossover from port 1 to port 2 on the 410 (it worked fine).  It I 
> change any of the cabling (i.e. swap things around), the green light 
> goes off.
> 
> I have my suspicions about the balun 
> (http://www.ctcu.com/catalog/datacom/balun.pdf).  Would a DB15F-RJ45 
> converter be better the the BNC-balun-RJ45 arrangement we have now?
> 
> Here's my zaptel.conf:
> span=1,1,0,ccs,hdb3
> bchan=1-15
> dchan=16
> bchan=17-31
> 
> The telco line IS working; it was tested and put in a couple of days 
> ago.  Any ideas why this isn't working?
> 
> Nick
> 
> 
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