Mobile Communication History: A-Network and B/B2-Network

What is the main function of the ENVELOPE command in GSM technology?

In GSM technology, what is the purpose of the SAT Commands: I/O DISPLAY TEXT?

Which part of GSM technology is responsible for call control by the SIM card?

What component in a GSM network is responsible for managing call routing and roaming information?

Which GSM component holds security-related information for authentication purposes?

In GSM networks, which entity is responsible for managing the interaction between the Mobile Equipment (ME) and the SIM (Subscriber Identity Module)?

What is the responsibility of GSM/MoU regarding the internal specification of Algorithm A5 in GSM?

In GSM authentication, what is the purpose of the Individual Subscriber Authentication Key Ki?

What entity in GSM manages the proposals for Algorithm A3 and A8?

What happens when the fixed subsystem tests the signature SRES for validity in GSM authentication?

In GSM authentication, what does the Mobile Equipment (ME) transmit to the fixed subsystem for validation?

Which algorithm is used by the Mobile Station (MS) to compute the signature SRES in GSM authentication?

What is the purpose of Algorithm A5 in GSM technology?

What is the responsibility of the infrastructure in GSM encryption?

In GSM, what happens if a Mobile Station (MS) indicates it does not support any of the ciphering algorithms required by GSM 02.07?

What is the purpose of Algorithm A8 in GSM according to GSM 03.20?

What is a specific security problem with the COMP 128 authentication algorithm used by some operators in GSM networks?

Which attack on the GSM cipher A5/1 is NOT mentioned in the text?

In a chosen-challenge attack on COMP128 in GSM networks, what is required to determine the Individual Subscriber Authentication Key (Ki)?

What critical question does the text highlight regarding GSM security algorithms?