14 Jan
2010
14 Jan
'10
10:33 p.m.
Hi all,
I'm cross-posting this to both OpenBTS and OpenBSC mailing lists
in a hope to get wider audience. Sorry if you get this message twice.
Ivan and I are working on USSD support for OpenBTS now. We've got
all our test phones working except old Siemens A52 (newer A65 is ok).
When we request more information from the phone in order to create
menu-like experience, this phone deny processing any further USSD
with "NOT EXECUTED" error, while still keeping L3 channel open.
This looks quite much like a bug in the phone, but also seems we have
a problem in our code too - I tested it with my working SIM card and
my normal operator USSD menu and it works.
So I kindly ask everyone who have Nokia 3310 with MBUS cable or
any other GSM sniffer and have access to live network with working
USSD to help us with gathering some real-network data. Please:
1) Call some simple USSD request, which just return a single piece
of data. Like "Show my balance"
2) Call some menu-like USSD request and go through several levels
of it. On our network we have a kind of "Self-care service" through
USSD which works that way.
3) If you know how to summon network-originated USSD request or
notification - we will appreciate if you include this too. I have never
seen this on my home network, though.
4) Send me your trace.
Thanks!
--
Regards,
Alexander Chemeris.
22 Jan
22 Jan
6:37 p.m.
Hi all,
Since no one replied and I'm tired of waiting, we've made our own
debug Nokia phone. I gave up searching for a cable and we just
soldered cable to the M-BUS pins. We used old data cable for
Siemens as a USB-Serial converter, they were PL2303 based.
This works like a charm and is a very cheap solution. If you lack
special cable for your Nokia - take this way into consideration.
To my surprise, latest Wireshark is able to decode everything
I need - all USSD messages. I didn't expect this. Many
thanks to those who contributed all that code to Wireshark.
--
Regards,
Alexander Chemeris.
27 Jan
27 Jan
11:42 a.m.
On Fri, Jan 22, 2010 at 09:37:46PM +0300, Alexander Chemeris wrote:
Hi all,
Since no one replied and I'm tired of waiting, we've made our own
debug Nokia phone. I gave up searching for a cable and we just
soldered cable to the M-BUS pins. We used old data cable for
Siemens as a USB-Serial converter, they were PL2303 based.
This works like a charm and is a very cheap solution. If you lack
special cable for your Nokia - take this way into consideration.
great to see you're making progress.
I would have loved to generate/provide USSD traces, but to be honest
I've never seen USSD in use here in Germany...
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
11:48 a.m.
On Wednesday 27 January 2010 12:42:04 Harald Welte wrote:
great to see you're making progress.
I would have loved to generate/provide USSD traces, but to be honest
I've never seen USSD in use here in Germany...
I think services like balance of Simyo and other prepaid cards are realized
with it.
4:21 p.m.
Holger,
On Wed, Jan 27, 2010 at 14:48, Holger Freyther <zecke(a)selfish.org> wrote:
On Wednesday 27 January 2010 12:42:04 Harald Welte
wrote:
Very probably.
Balance check is by far the most popular USSD request here too, usually
looking like *100#. USSD menu here can be invoked by *111# for all three
operators.
--
Regards,
Alexander Chemeris.
great to see you're making progress.
I would have loved to generate/provide USSD traces, but to be honest
I've never seen USSD in use here in Germany...
I think services like balance of Simyo and other prepaid cards are realized
with it. 
5:50 p.m.
This is how balance checking works on Blau, also. I'd try *111# but
I'm out of credits and can't buy e-Plus cards in the US.
Remember also that USSD applications live in the SIM's home network,
not in the local carrier's network. If a carrier uses USSD for
account management, the USSD features should work the same way
anywhere in the world.
On Jan 27, 2010, at 8:21 AM, Alexander Chemeris wrote:
Very probably.
Balance check is by far the most popular USSD request here too,
usually
looking like *100#. USSD menu here can be invoked by *111# for all
three
operators.
--
Regards,
Alexander Chemeris.
David A. Burgess
Kestrel Signal Processing, Inc.
5:58 p.m.
David,
On Wed, Jan 27, 2010 at 20:50, David A. Burgess <dburgess(a)jcis.net> wrote:
Remember also that USSD applications live in the
SIM's home network, not in
the local carrier's network. If a carrier uses USSD for account management,
the USSD features should work the same way anywhere in the world.
Not exactly. There is a range of numbers which should be forwarded to your
HPLMN, while others are to be processed by your roaming operator.
IIRC, all 1xx should be forwarded to HPLMN. That's why it is used for balance
checking, etc.
--
Regards,
Alexander Chemeris.
8:33 p.m.
Am 27.01.2010 um 18:50 schrieb David A. Burgess:
This is how balance checking works on Blau, also.
I'd try *111# but
I'm out of credits and can't buy e-Plus cards in the US.
O2 even offers a full menu with response-possibility if you use *100#.
Balance is *101#, but you can also use *100# and choose 1 then. It
also allows you do send full texts etc back where necessary.
--
Jonathan
9:18 p.m.
Hi,
On Wed, Jan 27, 2010 at 23:33, Jonathan Schleifer
<js-openbsc(a)webkeks.org> wrote:
Am 27.01.2010 um 18:50 schrieb David A. Burgess:
Aha, Harald, I know you should have o2 SIM ;)
Could you, please, generate some traces with *101# and then with walking
through *100# menu, with normal finish (like after you receive balance info)
and with MO release (press C on 3310 to break connection manually).
Jonathan, thank you for information!
--
Regards,
Alexander Chemeris.
This is how balance checking works on Blau, also.
I'd try *111# but I'm
out of credits and can't buy e-Plus cards in the US.
O2 even offers a full menu with response-possibility if you use *100#.
Balance is *101#, but you can also use *100# and choose 1 then. It also
allows you do send full texts etc back where necessary.
4:19 p.m.
Harald,
On Wed, Jan 27, 2010 at 14:42, Harald Welte <laforge(a)gnumonks.org> wrote:
On Fri, Jan 22, 2010 at 09:37:46PM +0300, Alexander
Chemeris wrote:
Interesting why - USSD is a convenient technology for self-care
and VAS. All three Russian mobile operators engage it. Web-site
based self-care has more features, but USSD is very convenient
when you don't have internet access or need to switch some feature
on/off quickly.
Btw I found that all three operators implement USSD menu as
MT-USSD, while we where trying to implement it vice versa.
Probably this is to circumvent buggy MO-USSD in old phones
like Siemens A52 I have. But from the Standard point of view
this is surprisingly non-obvious way.
I think I can upload captured traces somewhere if someone wants
to look at them.
--
Regards,
Alexander Chemeris.
Hi all,
Since no one replied and I'm tired of waiting, we've made our own
debug Nokia phone. I gave up searching for a cable and we just
soldered cable to the M-BUS pins. We used old data cable for
Siemens as a USB-Serial converter, they were PL2303 based.
This works like a charm and is a very cheap solution. If you lack
special cable for your Nokia - take this way into consideration.
great to see you're making progress.
I would have loved to generate/provide USSD traces, but to be honest
I've never seen USSD in use here in Germany...
5726
days inactive
5739
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9 comments
5 participants
participants (5)
-
Alexander Chemeris -
David A. Burgess -
Harald Welte -
Holger Freyther -
Jonathan Schleifer