In my Wireshark Network traffic I get both 2G and 3G data packets (gsm_map). How to filter only 2g or only 3g data packets?
We usually concern about AnyTimeInterrogation message in GSM.
asked 23 Oct '13, 05:43
I found answer myself.
In display filter, I need to use,
answered 23 Oct '13, 23:53
It might be possible to filter on AnyTimeInterrogationRes and values in SubscriberInfo like lastRAT-Type but the element is Optional so I'm not sure.
answered 23 Oct '13, 08:02
Pranitkothari, just make sure that you don't run into cases where the subscriber is reachable by UMTS but the SAI is not included in the ATI return. A few things to note about your approach here:
Those items might sound like paranoia if you're literally just looking for ATI responsees where the location returned was in UMTS coverage, but depending on your network environment that it's possible to be available in UMTS but not have an SAI included in ATI response to the interrogator. The solution may work for you depending on your case though.
answered 24 Oct '13, 17:55
edited 24 Oct '13, 17:58