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From: WANCHO@SIMTEL20.ARPA ("Frank J. Wancho")
Newsgroups: comp.dcom.modems
Subject: What is Max speed possible on phone lines?
Message-ID: <WANCHO.12345854244.BABYL@SIMTEL20.ARPA>
Date: Tue, 27-Oct-87 11:42:00 EST
Article-I.D.: SIMTEL20.WANCHO.12345854244.BABYL
Posted: Tue Oct 27 11:42:00 1987
Date-Received: Thu, 29-Oct-87 23:01:19 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 11

The highest "speed" possible on conventional dialup lines is 1200
baud.  That figure is due to the limited bandwidth of the phone lines
when non-metallic circuits are involved.  However, the highest bit
rate possible is a function of the bit-encoding technique used to
squeeze more bits per baud using analog technology.  With digital
technology and short haul point-to-point metallic circuits, you can
expect 10MBps (twisted-pair Ethernet).  Someday soon (in this century
I hope) the phone system will be completely digital and you can expect
to run at least one 56Kbps circuit, plus voice...

--Frank