Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!metaphor!xymox!philf
From: philf@xymox.metaphor.com (Phil Fernandez)
Newsgroups: comp.dcom.modems
Subject: Re: TB 2500 query
Message-ID: <848@metaphor.Metaphor.COM>
Date: 15 Oct 89 00:48:21 GMT
References: <4946@orca.WV.TEK.COM>
Sender: news@metaphor.Metaphor.COM
Reply-To: philf@xymox.metaphor.com (Phil Fernandez)
Organization: Metaphor Computer Systems, Mountain View, CA
Lines: 24

In article <4946@orca.WV.TEK.COM> jeffg@orca.WV.TEK.COM (Jeff C. Glover) writes:
>Is there any way to get the TB modem to do an ATZ command upon loss of
>carrier?  Several of these stupid modem programs are setting "S0=0" and
>then nobody else can dial in after their use.  If ATZ were run after
>carrier dropped, everything would be ready for the next user.

Take a look at enhanced register S52. If S52=2, the modem resets when
an on-to-off transition occurs on DTR.  This recalls the user profile,
which you can set to either the A or B EEPROM profile.

The modem won't answer while DTR is off, but many communication
processors, e.g., Bridge/3Com comm servers, have a configuration to
allow DTR to be toggled on disconnect for just this purpose.  The
toggle will reset the modem and re-raise DTR, making the modem ready
for another call.

pmf

+-----------------------------+----------------------------------------------+
| Phil Fernandez              |             philf@metaphor.com               |
|                             |     ...!{apple|decwrl}!metaphor!philf        |
| Metaphor Computer Systems   |"Does the body rule the mind, or does the mind|
| Mountain View, CA           | rule the body?  I dunno..." - Morrissey      |
+-----------------------------+----------------------------------------------+