Re: [hylafax-users] Problem installing Mainpine OCTO+

["John Warren" <jwarren@xxxxxxxxxxxxx>]

First, any word on the kernel compile procedure for CentOS so all the ports on
the OCTO+ can be used?

It's been a long week getting the OCTO+ up and running. Durning the process
I've found an issue that I assume will effect not only the OCTO+ but the 2 and
4 line boards as well. WATCH OUT for reverse line polarity and/or PAIRGAIN
units. 

Although most phones and modems don't care about line polarity it looks like
the OCTO+ has a hard time detecting the ring if it's reversed. I had unpluged
the OCTO+ from the phone line while putting in new cables. When I reconnected
the board it would not detect ring on one line. I check the line with a butt
set and found the line working but the polarity was reversed. Went back to the
punch down blocks and found the wiring was correct but the line from the telco
had tip and ring swapped. I think they may have done this when they repaired a
shorted line a couple of weeks ago. 

In addition when they fix the line they moved it over to a PairGain unit.
Watch out for lines connected to some PairGain units as they seem to have a
problem passing Caller ID. I'm not fighting with the AT&T (SBC) about returnng
my line back to the CO. They don't want to and say the loss of Caller ID is
just the way it is. 

So at this point I'm not sure if the reverse line issue only shows up when
going through a PairGain or if a swapped tip and ring from the CO would have
done the same thing. The main point is that if your having problems detecting
rings check the line polarity.






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