Analyzing GSM capture on Wireshark

1. When looking at GSM frames, the term channel is used a lot. What does channel refer to?

2. What frequency and ARFCN is this network operating on? Show a screenshot that clearly shows you found the correct type of BCCH with this info. Describe the ARFCNs and what their actual frequencies would be.

3. The network broadcasts neighboring ARFCNs. This is so your phone knows what bands it can handoff to that are nearby. Find the data in the appropriate BCCH and include a screenshot. (note, there are two different batches that were available, depending on which BCCH you look at and what band the phone is capable of, just include one)

4. When searching through the BCCHs, youll find one of the types that contains the network area identification parameters. This includes our MCC and MNC! Take a screenshot that clearly shows you found the MCC/MNC. Describe them, who is the actual carrier?