Path: utzoo!utgpu!watmath!clyde!mcdchg!chinet!patrick
From: patrick@chinet.chi.il.us (Patrick A. Townson)
Newsgroups: comp.dcom.modems
Subject: Re: modem problem
Message-ID: <7642@chinet.chi.il.us>
Date: 5 Feb 89 15:23:23 GMT
References: <787@hawkmoon.MN.ORG> <277@gp.govt.nz>
Reply-To: patrick@chinet.chi.il.us (Patrick A. Townson)
Organization: Chinet - Public Access Unix
Lines: 24

In article <277@gp.govt.nz> gpwrdcs@gp.govt.nz (Don Stokes, Govt Print, Wellington) writes:
>In article <787@hawkmoon.MN.ORG>, root@hawkmoon.MN.ORG (Admin) writes:
>> 
>> But nooo..  As soon as i issue the +++, the carrier drops the carrier like a hot
>> potato.  What the heck am i doing wrong here?  The USR manual mentions nothing
>> like:
>
>Well, that certainly isn't normal behaviour for a Hayes compatoble modem...

Some modems, such as my US Robotics Courier 2400 have a dip switch setting
which allows +++ to be treated in one of two ways. With the dip switch 
set one way, the three plusses will retain the phone connection and return
to command state. Set the other way, this causes the modem to hang up and
send a NO CARRIER result code.

In the US Robotics Courier 2400 instruction manual see page C-4, and refer
to Switch 9. I don't personally know why anyone would want to use it in
the mode where it immediatly disconnects the phone, but I guess some people
must use it that way.

-- 
Patrick Townson 
  patrick@chinet.chi.il.us / US Mail: 60690-1570 (personal zip code)
  FIDO: 115/743 / AT&T Mail: 529-6378 (!ptownson) /  MCI Mail: 222-4956