Hello Osmocom community,
Vadim (fixeria) invited me to give a presentation on some of my topics
of expertise on OsmoDevCall; I have given some thought to which topics
I could present on, and I have two proposals:
Presentation 1: Themyscira Wireless: GSM network in sunny California.
In this presentation I will describe the community GSM network I am
building in my corner of the world, using Osmocom CNI software and
whatever BTS hardware fits the bill, currently just one sysmoBTS.
Whereas most well-known community GSM networks such as Rhizomatica
have been built in areas with no commercial cellular coverage of any
kind, my use case is very different: I live in an area where every
square mm is blasted with super-strong 4G and 5G signals from 3 major
carriers, but a community GSM network is needed in order to provide
service specifically to *vintage* mobile phones, which require 2G.
I will cover this unusual telos and the different design choices that
stem from it, I will cover my own software that interfaces to OsmoMSC
via MNCC, and I will cover my interface to USA PSTN via SIP with G.711
voice, including my own implementation of transcoding MGW.
Presentation 2: Calypso chipset history and development boards, from
TI to FreeCalypso. In this presentation I will cover the history of
TI Calypso chipset itself (silicon and DSP revisions, ABB and RF
chips), the history of TI's original support for these chips
(reference fw and development boards), how various commercial Calypso
device vendors changed things (very small changes in the case of
Openmoko, huge changes in the case of Compal), how I entered the scene
with my FreeCalypso brand, and the impact of two most recently
discovered modem modules: Huawei GTM900 and iWOW TR-800. I will cover
my motivations and upcoming new hardware plans, and at the end I would
like to engage in a discussion on how to make FreeCalypso-suitable hw
(meaning hw suitable for running full FC solution) more readily and
less expensively available to interested players.
I have added both of the above talk proposals to the wiki page:
https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCall
but of course nothing is scheduled yet. Given that the schedule is
booked many months in advance these days, it is now up to the community
to decide what y'all are interested in, and if there is interest in
both topics, which should be scheduled first.
Sincerely,
Lady Mychaela N. Falconia,
Mother of FreeCalypso,
Dame of the Order of 2G,
Champion of Published Source Code