Q. With reference to the introduction of Calling Name Presentation (CNAP) in telecommunication networks, consider the following statements:
1.It will facilitate mobile number portability by the user without the need of visiting the store.
2.It requires the originating service provider to send the caller’s name during call setup.
Which of the statement(s) given above is/are correct?
Answer: D
Notes:
Explanation –
Statements 1 and 2 are incorrect. CNAP is a supplementary service that displays the caller’s name to the called party, it has no direct relation to mobile number portability. The caller’s name (CNAM) is not sent by the originating service provider during call setup. Instead, the terminating service provider performs a database lookup using the caller’s phone number to retrieve the name information from a trusted data source and display it to the called party. It aims to empower subscribers to identify callers and take an informed decision on receiving calls from unknown/spam callers.
Source: The Hindu
