That answers a couple of my other questions Bryan. Thanks for the reply.

When AT&T first started supplying the 2-wire circuits to Birch in this market, Birch had so many problems with them that they started refusing any loop that wasn't a 4-wire in Dallas. That was five years ago however. It sounds like they have really gotten the technology cleaned up.

Well I suppose since it actually is full duplex and has been signed off on by the Tech Talk T1 Braintrust I'll stop whining about it.

Thanks for sharing all the knowledge guys.

:toast: