Using OpenBTS and airprobe_decode.py

[Роман Половинцев]

Hello! I have installed OpenBTS, Asterisk, Wireshark and GR-GSM. Using OpenBTS and Asterisk and 2 phones, I made a test call beetween. I wrote all traffic from OpenBTS in file. For the record, I used tcpdump. How is decoding voice traffic using airprobe_decode.py? Which parameters to specify? Do really get voice traffic using OpenBTS and airprobe_decode.py?

In OpenBTS no coding.

P.S. Sorry for my bad Englis. 

[roman khassraf]

Hi,

you can decode the voice traffic of your setup, but not from your packet dump.
You have to capture the transmissions on the air interface between openbts and your phone. This can be done with airprobe_rtlsdr_capture.py and a rtl-sdr device for example, see https://github.com/ptrkrysik/gr-gsm/wiki/Usage#capturing-and-saving-with-rtl-sdr

br,
Roman