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| Computers Forum Index » Computer - DCOM - Modems » +++ in command/online comman mode - what should I... |
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| John McCabe... |
 Posted: Fri May 08, 2009 6:15 pm |
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Guest
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Hi
Does anyone know whether a modem should respond to "+++" when it's
already in online command mode (or even in command mode)? If it
should, should it return ERROR or OK?
Thanks
John |
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| Moe Trin... |
| Posted: Sat May 09, 2009 12:02 am |
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On Fri, 08 May 2009, in the Usenet newsgroup comp.dcom.modems, in article
<thf805lnpe0q69rs8cfsj6519h8ip1enob at (no spam) 4ax.com>, John McCabe wrote:
Quote: Does anyone know whether a modem should respond to "+++" when it's
already in online command mode (or even in command mode)? If it
should, should it return ERROR or OK?
Depends on the modem - none the less, the two Rockwell and one
USRobotics I've got access to ignore the '+++' in command mode, with
or without the one second guard periods assuming the characters are
not confused with a regular command ("AT+++" would return ERROR, as it
is not a legitimate command). When on-line, all three do return to
command mode if the guard periods are met, as expected.
Old guy |
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| John McCabe... |
| Posted: Tue May 12, 2009 8:43 pm |
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Guest
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On Fri, 08 May 2009 15:02:39 -0500, ibuprofin at (no spam) painkiller.example.tld
(Moe Trin) wrote:
Quote: On Fri, 08 May 2009, in the Usenet newsgroup comp.dcom.modems, in article
thf805lnpe0q69rs8cfsj6519h8ip1enob at (no spam) 4ax.com>, John McCabe wrote:
Does anyone know whether a modem should respond to "+++" when it's
already in online command mode (or even in command mode)? If it
should, should it return ERROR or OK?
Depends on the modem - none the less, the two Rockwell and one
USRobotics I've got access to ignore the '+++' in command mode, with
or without the one second guard periods assuming the characters are
not confused with a regular command ("AT+++" would return ERROR, as it
is not a legitimate command). When on-line, all three do return to
command mode if the guard periods are met, as expected.
Thanks for that. I had a look on the net and couldn't find anything
definitive about what should happen in that case, and I didn't have
any modems to hand other than the one we're developing here and for
which I need to know the answer!! |
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