Re: OsmocomBB.TCH.

BTW, I still do not fully understand what Marten wants to do:

I think he wants to turn the GSM into a simple two way radio / talkie-walkie, making two phones talk directly together on a TCH. (with only 2 devices)

If both are pre-aligned on the same cell and if you appropriately set the uplink/downlink frequencies, and make sure there are tracking for frequency offset/toa it could work. But it's way more complex than just 'opening' a TCH with L1CTL, and without a good undertanding of how to setup all that ...

I had thought of this some time ago and its among my 'list of fun thing to try', but I didn't quite get to it yet ...

Cheers,

Sylvain