GSM license approval for HAR2009
David A. Burgess
dburgess at jcis.net
Wed Jul 22 18:22:57 CEST 2009
Congratulations on the license.
One thing we plan do at Burning Man is run an auto-provisioning
system via SMS, using the BTS itself as a SIM reader. When a handset
first tries to register, we will accept the location updating attempt
and then send a text message saying "If you want experimental
service, please reply with your telephone number." The reply to the
text message then goes into a function that creates a new entry in
the provisioning database based on the originating IMSI and the
content of the message. Then we will respond with something like
"Thanks for joining our test. This is an experimental network. WE
DO NOT SUPPORT EMERGENCY CALLS. To quit the test, reply to this
message." In the US, at least, the part about emergency calls is
I realize you don't have a lot of time left to get ready for HAR,
though. This may or may not be a simple hack, depending on the state
of your SMS software. But if it works, it will be a lot faster than
provisioning phone by hand.
On Jul 22, 2009, at 8:38 AM, Harald Welte wrote:
> For those who are planning to attend HAR2009 (http://har2009.org/):
> We have just received regulatory approval for four ARFCN in the
> GSM900 band
> during HAR2009. The Power on each ARFCN for BTS and MS is
> restricted to 100mW.
> There are also some GSM1800 ARFCN's that we can use with up to
> 200mW, though
> I don't yet know their values and how many.
> I have created a wiki page at https://wiki.har2009.org/page/GSM
> for further coordination of GSM related activities at HAR2009.
> It would be great to know which other OpenBSC users/hackers will be
> at the event. As there are multiple things that I'm planning to do
> at HAR2009,
> I would be happy about any help that I might get from you guys.
> Basically there will be
> * A 'stable' GSM network with BS-11 and OpenBSC for people to test
> their phone interoperability with OpenBSC by making/receiving
> calls and
> * A nanoBTS1800 for use by OpenBSC hackers only to test/fix OpenBSC
> before putting it on the BS-11 'stable' network
> * work on airprobe.
> Especially for the 'stable' network, there is a lot of help
> required, among
> * physical setup of the BS-11
> * registration of mobile phones into the network. It would probably
> be good
> to have a setup where people can plug their SIM into a SIM card
> (or phone that can read the IMSI). We can then create the SQL
> entry with
> their IMSI and extension.
> * making sure the network runs and OpenBSC / hfcmulti gets
> restarted in case
> something hangs.
> Please just respond to this mail if you want to help in any way.
> - Harald Welte <laforge at gnumonks.org> http://
> "Privacy in residential applications is a desirable marketing option."
> (ETSI EN 300
> 175-7 Ch. A6)
David A. Burgess
Kestrel Signal Processing, Inc.
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