Course: Building and Running Community Cellular Networks with OpenBTS.
- OpenBTS: An open-source GSM/SIP gateway that converts 2G GSM into standard VoIP protocols.
- FreeSWITCH: An open-source PBX/SIP Switch that routes all SIP traffic in the network.
- smqueue: An open-source Short Message Service Center (SMSC) that routes SMS messages.
- sipauthserve: An open-source Home Location Register (HLR) that maintains the Subscriber Registry (SR)
I attended Maker Faire, which was a blast. I attended Zero to Maker: Getting to Speed with the Maker Movement (got a book signed by David Lang) and The Industrial Age is Over: Welcome to the Maker Age with Douglas Rushkoff. There were many interesting talks and presentations – archived videos from the main and live stages are at Maker Faire | Live.
A shout out to Makerbar and the members of Makerbar who put together the Orbital Rendersphere (five Editor’s Choice awards!). After helping dismantle their stand, we hung out together afterwards in Flushing, consuming soup dumplings (xiao long bao) and other delicious Shanghainese foods.
World Maker Faire Media Coverage:
IMT-Advanced explained – *I want to slap the T-Mobile spokes model in back of head NCIS style* – what is being marketed as 4G is more honestly 3.5G, what’s marketed as LTE is only 4G-capable and what being called 5G (LTE-Advanced?) is really just full 4G.
Hanging out at Makerbar, I was researching and picking brains on my next project: Software Defined Radio (SDR). I was inspired by a recent IEEE Spectrum article to check it out. The USB dongle costs around twenty bucks, and it can be easily combined with a Raspberry Pi.
From the article comments and research on the web, I ordered from NooElec their R820T.
Also, fellow Makerbar buddies recommended the HackRF Jawbreaker. I’ll keep an eye out for when it comes out.
I’ve come across some recent presentations and readings on protocols: