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From: mccoy@cbnewse.att.com (earl.mccoy)
Newsgroups: comp.dcom.modems
Subject: IBM dual speed modems
Keywords: IBM modem speeds
Message-ID: <1990Aug15.140308.25931@cbnewse.att.com>
Date: 15 Aug 90 14:03:08 GMT
Distribution: na
Organization: AT&T Bell Laboratories
Lines: 9

The IBM 5868 and 7868 modems transmit from master to tributary at
one speed, say 14.4K, and transmit from tributary to master at
another speed, say 9.6K. My question is: what speed does the master
modem use across the DTE/DCE interface, i.e. to the FEP? Does
the modem send back at 9.6K and receive at 14.4K, or does it use
a single 14.4K speed? If the former the FEP LIC must autobaud, if
the latter the modem must buffer the frame. I am unable to find
explicit documentation on this point. Thanks in advance.
Earl E. McCoy 312-230-4236 attmail!emccoy cuuxb!ntcc!mccoy