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000417_news@columbia.edu _Tue Jul 18 12:40:49 2000.msg
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From: "Mr. Scott" <scott_davis@my-deja.com>
Subject: Re: Wierd dialing problems
Date: Tue, 18 Jul 2000 16:23:40 GMT
Organization: Deja.com - Before you buy.
Message-ID: <8l209m$tu3$1@nnrp1.deja.com>
To: kermit.misc@columbia.edu
In article <8l008u$ge5$1@newsmaster.cc.columbia.edu>,
fdc@watsun.cc.columbia.edu (Frank da Cruz) wrote:
> In article <8kvv01$eg7$1@nnrp1.deja.com>,
> Mr. Scott <scott_davis@my-deja.com> wrote:
> : These problems relate to kermit 7.0.197 on AIX 4.2
> :
> : Problem 1.
> : When dialing, kermit sends the flow control commands BEFORE it sends
> : the init string. Is this correct? Shouldn't the init string be the
> : first thing sent!?
> :
> That would seem to make sense, but since flow control is not part of
> the init string, it turns out to be essential to send the flow control
> command first, otherwise the init string (which can be rather long)
> might cause buffer overruns in the modem's UART.
But the init string is ATZ, which hoses the previously set flow-control.
So the sequence of events transpires like this:
A) kermit sets flow control to hardware,
B) kermit sends the initialization string which changes it,
C) things screw up
> It sounds like a flow control issue. What kind of modem is it, what
> kind of modem did you tell Kermit it is, and which kind of flow
control
> are you using?
It is a 3com OfficeConnect 56K.
I set it to use RTS flow control, and the Unix port is set the same.
Here is the macro I use to described it to kermit:
define describe-3com-modem {
assign modem-name 3com
set modem type user-defined
set modem name 3com
set modem capabilities AT SB HWFC SWFC EC DC
set modem maximum-speed 38400
set modem speed-matching off
set modem flow-control rts
set modem hangup-method modem-command
set modem dial-command ATDT%s\{13}
set modem command no-flow-control AT&H0&I0&R1\{13}
set modem command software-flow AT&H2&I2&R1\{13}
set modem command hardware-flow AT&H1&I0&R2\{13}
set modem command init-string ATZ\{13}
set modem command error-correction off AT&M0\{13}
set modem command error-correction on AT&M4\{13}
set modem command compression off AT&K0\{13}
set modem command compression on AT&K1\{13}
set modem command speaker off ATM0\{13}
set modem command speaker on ATM1\{13}
set modem command volume low ATL1\{13}
set modem command volume medium ATL2\{13}
set modem command volume high ATL3\{13}
set modem command autoanswer off ATS0=0\{13}
set modem command autoanswer on ATS0=1\{13}
set modem command hangup-command ATH\{13}
echo The 3com modem bank configuration settings are now active.
}
Sent via Deja.com http://www.deja.com/
Before you buy.
From news@columbia.edu Tue Jul 18 12:40:49 2000
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From: fdc@columbia.edu (Frank da Cruz)
Subject: Re: Wierd dialing problems
Date: 18 Jul 2000 16:37:56 GMT
Organization: Columbia University
Message-ID: <8l2154$17g$1@newsmaster.cc.columbia.edu>
To: kermit.misc@columbia.edu
In article <8l209m$tu3$1@nnrp1.deja.com>,
Mr. Scott <scott_davis@my-deja.com> wrote:
: In article <8l008u$ge5$1@newsmaster.cc.columbia.edu>,
: fdc@watsun.cc.columbia.edu (Frank da Cruz) wrote:
: > In article <8kvv01$eg7$1@nnrp1.deja.com>,
: > Mr. Scott <scott_davis@my-deja.com> wrote:
: > : These problems relate to kermit 7.0.197 on AIX 4.2
: > :
: > : Problem 1.
: > : When dialing, kermit sends the flow control commands BEFORE it sends
: > : the init string. Is this correct? Shouldn't the init string be the
: > : first thing sent!?
: > :
: > That would seem to make sense, but since flow control is not part of
: > the init string, it turns out to be essential to send the flow control
: > command first, otherwise the init string (which can be rather long)
: > might cause buffer overruns in the modem's UART.
:
: But the init string is ATZ, which hoses the previously set flow-control.
:
Well, ATZ is an init string that you defined, not the built-in one. So
if you want ATZ as the init string, then you should set the profile that
is restored by ATZ to not hose flow control.
: So the sequence of events transpires like this:
: A) kermit sets flow control to hardware,
: B) kermit sends the initialization string which changes it,
: C) things screw up
:
: > It sounds like a flow control issue. What kind of modem is it, what
: > kind of modem did you tell Kermit it is, and which kind of flow
: > control are you using?
:
: It is a 3com OfficeConnect 56K.
: I set it to use RTS flow control, and the Unix port is set the same.
: Here is the macro I use to described it to kermit:
:
: define describe-3com-modem {
: assign modem-name 3com
: set modem type user-defined
: set modem name 3com
: set modem capabilities AT SB HWFC SWFC EC DC
: set modem maximum-speed 38400
: set modem speed-matching off
: set modem flow-control rts
: set modem hangup-method modem-command
: set modem dial-command ATDT%s\{13}
: set modem command no-flow-control AT&H0&I0&R1\{13}
: set modem command software-flow AT&H2&I2&R1\{13}
: set modem command hardware-flow AT&H1&I0&R2\{13}
: set modem command init-string ATZ\{13}
: set modem command error-correction off AT&M0\{13}
: set modem command error-correction on AT&M4\{13}
: set modem command compression off AT&K0\{13}
: set modem command compression on AT&K1\{13}
: set modem command speaker off ATM0\{13}
: set modem command speaker on ATM1\{13}
: set modem command volume low ATL1\{13}
: set modem command volume medium ATL2\{13}
: set modem command volume high ATL3\{13}
: set modem command autoanswer off ATS0=0\{13}
: set modem command autoanswer on ATS0=1\{13}
: set modem command hangup-command ATH\{13}
: echo The 3com modem bank configuration settings are now active.
: }
:
This definition looks substantially like the built-in USR definition.
How come you didn't just "set modem type usr" and use that? Is there
a problem with it?
- Frank