What is Centralized Automatic Message Accounting (CAMA)?

What is Centralized Automatic Message Accounting (CAMA)?

• A. A centralized point for the recording of switched message toll call information.
• B. A signaling protocol used for control information.
• C. A centralized toll call accounting system.
• D. A centralized toll call accounting system.

Answer: (A)

Centralized Automatic Message Accounting is about collecting toll-call data in a single place. In traditional circuit-switched telephone networks, each long-distance (toll) call generates a record at the switch that handles the call. Those Automatic Message Accounting records are then sent to a centralized facility that stores and forwards them for billing, auditing, and settlement. The emphasis is on centralizing the recording of switched voice-call information, not on signaling protocols or on running the whole toll-billing system. This is why the best description is a centralized point for recording switched toll-call information.

Centralized Automatic Message Accounting is about collecting toll-call data in a single place. In traditional circuit-switched telephone networks, each long-distance (toll) call generates a record at the switch that handles the call. Those Automatic Message Accounting records are then sent to a centralized facility that stores and forwards them for billing, auditing, and settlement. The emphasis is on centralizing the recording of switched voice-call information, not on signaling protocols or on running the whole toll-billing system. This is why the best description is a centralized point for recording switched toll-call information.