[hylafax-devel] Re: hylafax-devel: Re: atz

[Arjan Knepper <arjan@jak.nl>]

"Dr. Harald Pollack" wrote:
> 
> On Mon, 17 Apr 2000 10:42:54 +0200, Bernd Proissl wrote:
> 
> hello bernd!
> 
> >> It is a good practice (but sometimes slow) to send EACH command
> >> to modem enclosed by AT + CR.
> >
> >this was mainly my intention.
> >i will rewrite the thing again.
> 
> This methode (treat each modem command as a single one) has also the advantage, that some modem
> misbehaviours (I do not write faults :-) can be detected very easy and SOON.

TRUE!
 
> I have knowledge of a lot of complainst against modem behaviour, and often the behaviour can be
> reduced to such incredible strings like AT&X*Y%ZA1B2C3D4.... which will yield finaly OK but if
> submitted one be one, there IS sometimes response ERROR or even nothing which points either to a
> wrong command or a wrong command syntax.

Very very very true!!!
 
> Often, command syntax differs slighty, depending on actually used firmware version of modem. Such
> improperties can never be localized with such large (and often senseless) commandstrings.

We experienced exactly what you discribed here. We had to break
up the modem dial cmd string in to several command strings to
solve the problem.

Success,

Ing. Arjan Knepper