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Open Source Mobile Comms

Make VoWiFi calls from an open source client using asterisk: osmocom.org/news/297 - osmocom main contributor @sysmocom has recently released a forked version of asterisk that can be used to make VoWiFi calls using nothing but FOSS, a smart card reader and a SIM card.

osmocom.orgMake VoWiFi calls from open source client using asterisk - Open Source IMS Client - Open Source Mobile CommunicationsRedmine

@osmocom @sysmocom hahaha. In 2004 (iirc) I did a 3 months internship at Orange France, they asked me to evaluate if it was possible to implement this on the openmoko phone. They gave me no specs, no hardware, just a desktop computer in a room. most of the internship was spent trying to get an openmoko, without success. I increased my linux skills during the internship, but my answer was a straight "not without a team of specialist telecom engineers, and certainly not in 3 months". That was fun.

@f4grx @osmocom must have been 2006 or 2007, as that was when openmoko was releasing Neo1973 and GTA02. And definitely IMS is way more complicated than even the best intern can do on 3 months...

@osmocom @sysmocom this would seem massive news to me. I've never looked into buying a 4G device for myself, but now if 2G would stop working one day, I could just use a USB SIM reader and with any internet connection I could make and receive calls again?

This seems to be a complete game changer to have a mobile phone number without relying on any proprietary software. (Apart from what's running on the SIM.)

@jschwart @osmocom yes, all you'd need to make and receive calls is a SIM [of a cellular operator supporting VoWiFi], a smart card reader, internet connectivity, a Linux machine and Free Software.

@sysmocom @osmocom it's funny. I use a Sony Ericsson J120i and once received an SMS message "VoLTE has been activated". I couldn't imagine that to be relevant in any way to me at that time :)

I have some old USB SIM readers, so I might be able to try this. I played with Asterisk before too (mainly with ISDN and SIP). This is really amazing to see!!

@jschwart @sysmocom Please do let us know about your experience - ideally at discourse.osmocom.org/ or on the openbsc mailing list if you prefer to use mailing lists.

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