home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.dcom.modems
- Path: sparky!uunet!decwrl!wsrcc!wolfgang
- From: wolfgang@wsrcc.com (Wolfgang S. Rupprecht)
- Subject: Re: ZyXEL not hanging up on DTR off
- Message-ID: <BxFu61.9p6@wsrcc.com>
- Organization: W S Rupprecht Computer Consulting, Fremont CA
- References: <TIM.92Nov6140214@coors.boxhill.com> <WBE.92Nov8174702@crystal.bbn.com>
- Date: Mon, 9 Nov 1992 07:30:00 GMT
- Lines: 40
-
- wbe@bbn.com (Winston Edmond) writes:
- >I should clarify my previous post, just so to be clear on what "doesn't hang
- >up" means. The modem "hangs up" in the sense that it sends the appropriate
- >(v.42?) "please hang up" message to the remote end, which dutifully hangs up,
- >ending the telephone call. However the modem remains "off hook" at the local
- >end, with the CD (Carrier Detect), OH (Off hook), EC (Error correction), and
- >SQ (signal quality) lights lit as if it still had a valid, working
- >connection. It doesn't go On Hook until I manually prod it to do so.
-
- I've an even stranger problem w. 5.02. I can dial out of the xyzel
- just fine manually by connecting to it and typing:
-
- atdtw5551212
-
- If I get tip to issue the *exact* same string the modem balks... Both
- times the computer-modem speed is the same 38400b/s. Of course the
- intercharacter delay is a bit more when I type by hand. ;-)
-
- From the computer if I have it type:
-
- at\r\n
- <wait for OK>
- at\r\n
- <wait for OK>
- at\r\n
- <wait for OK>
- at\r\n
- <wait for OK>
-
- I don't get an ok every other time. Strange. I wonder if it is
- dropping chars in command mode.
-
- Anyone have any guesses? I tried delays before the output routines,
- just in case I was ansering too fast after the "OK", but that didn't
- seem to help.
-
- -wolfgang
- --
- Wolfgang Rupprecht wolfgang@wsrcc.com (or) decwrl!wsrcc!wolfgang
- Snail Mail: 39469 Gallaudet Drive, Fremont, CA 94538-4511
-