tl;dr: we will operate our own cellular network at 36C3. Bring your
mobile phone(s) and C3SIM card(s). Check the Wiki for latest status and device support.

Like previous years at 36C3 the C3GSM team will run a local cellular
network for mobile phones, alongside the
POC’s DECT system and the NOC’s IPv4 and IPv6 systems. As core network
for our cellular network we use the open source projects osmocom (for
2G/3G) and NextEPC (for 4G). There will only be a very limited number of
SIM cards available to buy. However, cards from previous CCC events can
be used, so please don’t forget to bring them. …

We are pleased to inform you that even with Resource Exhaustion the registration of telephone extensions for the 36th Chaos Communication Congress is open. Don’t get confused by the social media, it works without any voucher :-). You can claim your DECT, SIP or GSM extension in the Generic User Registration Utility (GURU). Like last year, you can register your devices on site yourself. Don’t forget your devices and chargers, chasing records, this year we want to break last year’s 6488 extensions.

Stay connected!

Good news everybody. There will be a mobile phone network at the camp.
We will setup a 2G/3G network and experiment with 4G as well.

Our network will support general data and voice services. The mobile
network will be connected to the POC, IOW it’s possible to call between
DECT and GSM numbers as usual.

Number registration is done via the guru UI.

Additionally we’re planning to add an interface to send and receive SMS
over HTTP. So you can create your own SMS-IRC gateway!

You will need to use a congress or camp SIM card to connect to our
network, so please bring your SIM cards from previous …

This year, we want to show that it is possible to provide reliable, secure communications infrastructure with the highest quality and premium service. For you!

DECT, SIP or GSM extensions can be reserved in the new GURU3. The old accounts and data from  GURU2 have been migrated. It is now possible to select a random free extension or to display all free numbers at the push of a button.

Last year we wrote: “Unfortunately it is technically not possible to speed up or parallelize the process [of the telephone registration]“. And because it seemed impossible to us, we built …

Needless to say, we will provide to you a phone infrastructure at Leipzig. Please do not forget to bring your DECT and mobile phone with you (and the correct charger, maybe even a headset if you have one). The congress is hosted in Leipzig for the first time, really the biggest congress location ever and maybe we have some unknown constraints. We are prepared for this big event with up to four system components (in Hamburg we had one) and up to 60 antennas (in Hamburg we had 45). We try our best to provide a comprehensive DECT network, but can’t promise because of the unknown building. If you …

Good news: There will be GSM at 33c3! Bad news: There are no SIM Cards available! At the past events we spread thousands. Please bring your SIM Card(s) and share your SIM Cards.

To (hopefully) prevent so much questions during the very short setup time, here is our plan ™:

• 23.11. – Extension registration in GURU for 33c3 is open.
• 23.12. – Starting GSM setup.
• 24.12. – Setup the Eventphone PBX, hang up DECT antennas.
• 25.12. – 11:00 a.m. Start issuing preregistered orga DECT phones, rollout wired devices, registration of new orga DECT phones if (inter)network is working.
• 26.12. – 11:00 a.m. Start …