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CDMA AT Commands and the 6225
CDMA AT Commands and the 6225
Sun, 12 Jun 2005 23:10:54 +1000
Mozilla Thunderbird 1.0.2 (X11/20050317)
I've decided to collect what information I can find regarding the Nokia
6225 (and probably other Nokia CDMA phones) for the edification of
others on this mailing list.
Personally I'm using a third party cable on linux. The cable is
supported by a kernel module and I can talk to the phone without any
Back in April, before I joined this list, someone was talking about AT
commands for Nokia's CDMA phones. I have this document also. Anyone else
that wants it can download it from Nokia's site at:
To save other CDMA users running off to grab this document let me tell
you the most important thing: You can't use anywhere near as many AT
commands on the CDMA phones. The commands are limited to modem-control.
There are no extended commands for such activites as recieving or
sending SMS (my personal priority). The NOKIA FBUS command is there,
implying that these phones will work with FBUS.
Another useful(?) document from Nokia is this one:
It indicates that the CDMA devices are quite capable of these
interactions, however I'm not sure if it's just referring to
Nokia's CDMA FAQ
is useless. It's (once again) all about developing software for use on
the phone, not for interfacing with it. However it did give me one
useful piece of marketspeak: Aparently CDMA is the fastest growing
mobile phone protocol, so by workingo on this, I'm not working on a
dying system :)
FBUS on CDMA
Finding documentation on FBUS has been rather difficult. The actual
protocol is discussed at this page:
The author only pays attention to GSM phones and so we can only assume
that a standard FBUS will work across all phones.
Gnokii and my 6225
The 6225 is (aparently) a CDMA version of the 6220 (the SIM slot is
still there even!). Given this, I would assume the same commands would
do the same things. This appears not to be so. In another thread, I've
detailed both using the phone as an AT device and a 6230 (which I found
got further than the 6220).
Using Minicom, I've managed to put the phone into FBUS mode (how do you
get it back without restarting?) and once I do that, gnokii seems to get
further, but still no bananas.
I'm not sure where to go next. Nokia's own PC Suite works fine on
windows so I'm sure we're just missing a small link in the chain. I'm
perfectly willing to find that link, not to mention keen. From other
messages it seems I'm not the only person wanting a CDMA device to work.
The next step I'll take is working with raw FBUS according to the
information in the previously mentioned webpage. If I can at least
confirm that the FBUS commands work in the same manner, I'll start to
work out where gnokii's missing link is.
I'm very keen to hear from other users, particularly developers of
gnokii. Has anyone ever tried to get CDMA phones working? Have you got
anywhere? Has anyone got any more useful documentation? (Nokia's own
developers sites gives a big fat zero for fbus!)
(Followups to come in this thread unless I make a breakthrough and have
something useful to announce)
- CDMA AT Commands and the 6225,
Rick Measham <=