The MeeGo ofono code here:
http://meego.gitorious.org/meego-cellular/ofono
contains a driver for the isi modem (as used in the n900) and a plugin
called n900.c. Both appear to have been written by nokia employees.
This code contains support for Cell Broadcast SMS (something the N900
running Maemo does not support).
Cell Broadcast SMS is where cell towers broadcast messages to all phones in
range. Its used for a number of things but the most common use is that a
number of operators use it to broadcast a cell tower ID of some kind. This
may be the name of the tower (e.g. the suburb the tower is in or the name
of the special location like a major shopping center, airport, train
station or sports field) or it may be a postcode for the tower or a set of
coordinates.
Many phones (including quite a few cheaper Nokias I have seen as well as my
previous Motorola Z6) support Cell Broadcast SMS and can display the tower
ID on the screen.
I wish to attempt to send the same Cell Broadcast SMS commands as ofono
does to see if its possible to write some code for Maemo/Fremantle that
handles Cell Broadcast SMS (for example, a libcbsms and then a cbsms-applet
to actually display the info) but I cant figure out how to send isi/phonet
commands on the N900 inside Maemo.
Does anyone know how to send these commands or have any other ideas on how
we can try the ofono code on Maemo/Fremantle to see if its possible to
build Cell Broadcast SMS support into Maemo/Fremantle without replacing the
entire telephony stack and all the user space telephony apps that depend on
it (dialer, SMS etc)
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