Cellular Networks & Forensic Evidence

Question 1

Four elements of cellular network

Answer 1

Mobile Station (MS)
Base Station Subsystem (BSS)
Mobile Switching Center (MSC)
Public Switched Telephone Network (PSTN)

Question 2

Four elements of Mobile Switching Center (MSC)

Answer 2

Home location register (HLR)
Visitor location register (VLR)
Equipment identity register (EIR)
Authentication centre (AUC)

Question 3

Information gathered from mobile phone

Answer 3

Mobile Country Code (MCC)
Location Area Code (LAC)
Group of Base Stations
CellID (CID)
Mobile Network Code (MNC)

Question 4

Base Station Subsystem definition (BSS)

Answer 4

The base transceiver station is the equipment at the cell site that facilitates communication between the cell phone user and the carriers’ network. The base station controller manages the radio signals for these base transceiver stations in terms assigning frequencies and hand-offs between cell sites.

Question 5

Evidence from SIM Card

Answer 5

Abbreviated Dialing Numbers (ADN)
Forbidden Public Land Mobile Network (FPLMN)
Laste Number Dialled (LND)
Location where phone was last powered down (LOCI)
Short Message Service (SMS)

Question 6

Public Switched Telephone Network (PSTN) definition

Answer 6

he PSTN is:
* an aggregate of all Circuit-switched Telephone Networks
* its purpose is to connects all telephone networks worldwide
* this is where tolls for connecting calls across different networks are calculated and assessed.