Comments on: Turning the Neo1973 into an (expensive) external GSM modem http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/ My Weblog Tue, 24 Nov 2009 09:27:07 +0000 http://wordpress.org/?v=2.8.6 hourly 1 By: Andrzej Zaborowski http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/comment-page-1/#comment-636 Andrzej Zaborowski Fri, 02 Nov 2007 20:27:16 +0000 http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/#comment-636 nc doesn't touch the data it transmits. The original tty mangles newlines if it hasn't been initialised by gsmd before, so this is not an issue (similarly as will the emulated pty if it isn't initialised). SMS works for me. More detailed information about the procedure pasted by Thomas, and other trick to ease gsmd debugging can be found here: http://unadventure.wordpress.com/2007/10/28/qpe-430-plus-qemu/ nc doesn’t touch the data it transmits. The original tty mangles newlines if it hasn’t been initialised by gsmd before, so this is not an issue (similarly as will the emulated pty if it isn’t initialised). SMS works for me.

More detailed information about the procedure pasted by Thomas, and other trick to ease gsmd debugging can be found here:
http://unadventure.wordpress.com/2007/10/28/qpe-430-plus-qemu/

]]> By: Wally Ritchie http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/comment-page-1/#comment-631 Wally Ritchie Wed, 31 Oct 2007 04:43:38 +0000 http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/#comment-631 This doesn't seem to work correctly because of handling of CR and LF. These appear to be mangled by nc. Perhaps there are stty settings that can make it work. The modem uses CR and LF and any program handling the modem must also use CR LF and be transparent to all characters. While you can get some AT commands working with arbitrary mangling of CR LF the mux (as well as SMS) will not work if any characters at all are mangled. Hardware flow control has to be handled correctly as well. This doesn’t seem to work correctly because of handling of CR and LF.
These appear to be mangled by nc. Perhaps there are stty settings that
can make it work. The modem uses CR and LF and any program handling the
modem must also use CR LF and be transparent to all characters. While
you can get some AT commands working with arbitrary mangling of CR LF
the mux (as well as SMS) will not work if any characters at all are
mangled. Hardware flow control has to be handled correctly as well.

]]> By: Leon Stringer http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/comment-page-1/#comment-629 Leon Stringer Tue, 30 Oct 2007 22:56:13 +0000 http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/#comment-629 I'll ask this here because it's the kind of obscure thing that FOSS people are (hopefully) good at. We've got a niche but important application for using cellphones as a Bluetooth fax modem. Is there any scope for getting this working with a consumer Neo or planned OpenMoko device? I’ll ask this here because it’s the kind of obscure thing that FOSS people are (hopefully) good at. We’ve got a niche but important application for using cellphones as a Bluetooth fax modem. Is there any scope for getting this working with a consumer Neo or planned OpenMoko device?

]]> By: thos http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/comment-page-1/#comment-627 thos Tue, 30 Oct 2007 16:49:48 +0000 http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/#comment-627 I did use ser2net initially, but nc is built into busy box, which means you don't need to set up a cross compiler to get this working. I did use ser2net initially, but nc is built into busy box, which means you don’t need to set up a cross compiler to get this working.

]]> By: anonymous http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/comment-page-1/#comment-626 anonymous Tue, 30 Oct 2007 15:49:02 +0000 http://blogs.gnome.org/thos/2007/10/30/turning-the-neo1973-into-an-expensive-external-gsm-modem/#comment-626 You know, there are real standards with real applications to export a serial port? Look here http://www.lysator.liu.se/~astrand/projects/cyclades-serial-client http://www.lysator.liu.se/~astrand/projects/sercd I have used this combination with good success to access a HSDPA modem from an embedded design that did not yet include a UMTS terminal. You know, there are real standards with real applications to export a serial port?
Look here
http://www.lysator.liu.se/~astrand/projects/cyclades-serial-client
http://www.lysator.liu.se/~astrand/projects/sercd

I have used this combination with good success to access a HSDPA modem from an embedded design that did not yet include a UMTS terminal.

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