[Asterisk-Users] Cisco ATA and a PayPhone

[Mark Johnson]

Hi Mark,

> I think ATA-188 supports polarity reversal.
>
> Cheers,
> ~Madhawa

I hope I don't sound stupid, but what does that mean?  I can't find a 
definition for polarity reversal and how it would help me.  I do see the 
188 supports it, but I'm not sure what to do with it.

Thanks!!

Mark