You might also want to check out

        http://www.xecom.com

as a source of telephone interface devices.  Haven't used them, but they look li
ke a good deal.

-- Mitch


------------------------------
Mitch Miller
mitchm@ns.net
------------------------------


-----Original Message-----
From:   Calvin [SMTP:tgo@CHIH1.TELMEX.NET.MX]
Sent:   Thursday, July 09, 1998 6:46 PM
To:     PICLIST@MITVMA.MIT.EDU
Subject:        [OT] POTS specifications???

Sorry to bother you again with another OT.

Does anybody know a link where I can find info on the US telephone system
specifications?

Actually, what I need to know is the voltajes that must be present on the
lines, and the signal levels.

Calvin