Date: Mon, 13 Oct 2003 16:17:14 -0500
From: "Pete Templin" <firstname.lastname@example.org>
That suggests that it's an ASL (Analog Subscriber Line)...
When the signal is placed on the wire, it is very analog. the digital
signal is modulated onto the wire and demodulated off of it and the
box that connects to the phone line at each end is properly and fairly
commonly called a DSL modem.
If the path was entirely digital, it would be a CODEC
(CODer/DECoder). It is a modem.