[Openbts-discuss] Protocol Analysis on OpenBTS-UMTS

[Leo L <leo...@gm...>]

Hi all,

Been reading these mailing lists for a while, they've certainly helped me
set up anf camp onto OpenBTS and its UMTS variant on the Ettus N210 and
B200 respective; however I have some questions:

1) Is the OpenBTS-UMTS project still being maintained? It seems like only
web data is enabled but the likes of SMS with SMQueue and Voice calls with
asterisk are still not properly implemented since its official release in
2014

2) When analysing the UMTS traffic AFAIK I note capturing on SGSNtun will
log UE Transport data on the UE's OS (using a Oneplus One).

When on the configs i use "rawconfig Control.GSMTAP.TargetIP 127.0.0.1" I
was able to see some non-userdata (e.g. SIM r/w commands, RRC paging
commands) in the transactions.

Is it possible to view what is being sent on the individual channels on the
UMTS stack (e.g. the DCCH and the RACH.FACH pair) via Wireshark's protocol
decoding functions? If not, are there any viable alternatives for
lower-level protocol analysis?

I think that's all of the current questions floating in my mind worth
asking- if I'm misunderstanding anything about this by all means correct
me! :-)

Leo