Re: [NTLK] [MP2100] MODEMtoMODEM communication problem

From: Peter H. Coffin (hellsop_at_ninehells.com)
Date: Mon Nov 29 2004 - 13:34:47 PST


On Fri, Nov 26, 2004 at 07:25:20PM +0100, arfalas wrote:
> Start the connection on mp side -> open NCU/NBU
> [nothing happens,NCU/NBU does not see the mp]
> Start the connection on mp side -> using Kermit / Zmodem / Black Night
> to give auto answer (ATA) and some other strings -> open NCU/NBU
> [the newt and the terminal emulation program "talk" but I cannot open
> NCU/BU because the modem port is being used by another app]

Yup.

> Start the connection on mp side -> using Kermit to give auto answer
> (ATA) or some other strings and "File / Transfer to.. -> NCU/NBU
> [the newt and the terminal emulation program "talk" but NCU/BU does
> not see the mp]

Is the terminal program closed and then NCU opened at this point? If the
terminal program owns the connection, NCU won't be able to get it.

You'll need a terminal program on the computer side that A) is willing
to leave the modem connected and B) properly releases control of the
serial port, and C) have NCU then grab the serial port and use the
previously-established hardware session.

> Start the connection on mp side -> using Black Night (set to not hang
> up when quitted) to give auto answer (ATA) or some other strings ->
> open NCU/NBU
> [the newt and the terminal emulation program "talk" but NCU/BU does
> not see the mp]
>
> I've tried the above things in all the manner, reversing, waiting,
> launching after the newt compose the number, after the newt connect,
> before, while, it's driving me crazy *_*.Oh, the last thing, the
> oputput of the terminal emulation apps:
>
> OK
> ATA
>
> CONNECTED XXXXX
> (some strange characters)

What exactly *are* the strange characters, and what is the XXXXX? That
almost sounds like a possible speed-mismatch depending on the characters
coming back. xxxxx`xxxx`xxxxxxxx`xxx I think was fairly symptomatic of a
mismatch between 1200 and 2400 bps.

Gads, I thought I recycled those braincells...

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