Question: When transporting supplementary service operations, what does the inclusion of 'e.g.' before a message name or list of messages imply?
Option 1: It indicates that only the specified messages are mandatory for transporting the operation.
Option 2: It suggests that the listed messages are examples, and any message carrying the Facility information element consistent with the transaction state can be used.
Option 3: It signifies that the operation requires a list of messages to be sent in sequence.
Option 4: It implies that the message(s) are deprecated for the specified supplementary service operation.
Explanation: The inclusion of 'e.g.' (example) before a message name or list signifies flexibility in message choice, provided the selected message contains the Facility information element and aligns with the current transaction state. This allows for adaptability in implementing supplementary services without being restricted to only the exemplified messages.