Please Help Identify This Card Time!

[Alan Tuttle <news001@macgeek.org>]

Okay, everyone! I have another Apple II card I haven't the foggiest
idea what it is and what it does!

http://www.macgeek.org/identify/unknown00.jpg
http://www.macgeek.org/identify/unknown01.jpg

A couple of things about this card... I bought a Platinum Apple IIe,
and this card was in it. The computer was previously used in an
educational institution. It has a DB-9 female port, and three ICs
marked 74LS244N, 74LS155AN, and SN74LS27N. On the chip side, it has the
company name "Advanced Business Technology, Inc.". On the backside of
the card, it has the number 1006D, and the text "TELTEC 01V 1587".

Any idea what it is? Please let me know! Thanks! :)