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- Newsgroups: comp.sys.amiga.datacomm
- Path: sparky!uunet!panther!mothost!white!rtsg.mot.com!king
- From: king@rtsg.mot.com (Steven King, Software Archaeologist)
- Subject: Re: Modem Terminology is Confusing
- Message-ID: <1993Jan4.161744.29620@rtsg.mot.com>
- Sender: news@rtsg.mot.com
- Nntp-Posting-Host: orchid3
- Reply-To: king@rtsg.mot.com
- Organization: Motorola Inc., Cellular Infrastructure Group
- References: <rbharding.038j@yuggoth.org> <paulk.2x6e@terapin.com>
- Date: Mon, 4 Jan 1993 16:17:44 GMT
- Lines: 29
-
- paulk@terapin.com (Paul Kienitz) publicly declared:
- >> Hayes Improved Escape Sequence with Guard Time (what a mouthful):
- >> Consists of short delay, followed by three special characters,
- >> usually '+', followed by another short delay. Patented (and
- >> vigorously enforced) by Hayes.
- >
- >Then why does my old Supra 2400 use the same feature? "+++" with a
- >one second delay before and after puts it in command mode.
-
- I can't speak about the Supra 2400 in particular, but several modem
- manufacturers did indeed use the Hayes patented escape sequence without
- licensing. And many used it quite legally once they licensed it from
- Hayes. Just because it's patented doesn't mean no one else can use it;
- it means you can charge people money to use it and sue them if they use
- it without permission, if you so desire. Hayes, obviously, desires to
- do this.
-
- Rockwell has licensed the Hayes Improved Escape Sequence with Guard
- Time from Hayes, so every modem with the Rockwell chipset makes use of
- that escape sequence. Your Supra 2400 doesn't use this chipset, but
- I'd bet dollars to donuts Supra paid Hayes money to use the escape
- sequence. Or neglected to pay Hayes up front, but settled in or out of
- court later...
-
- --
- -------------------------------------------------------+-----------------------
- I'm a juggler. I have balls and I know how to | Steven King
- use them! | Motorola Cellular
- | king@rtsg.mot.com
-