Which system provides secure telephone data and video teleconferencing?

Which system provides secure telephone data and video teleconferencing?

• A. INMARSAT B
• B. INMARSAT A
• C. INMARSAT C
• D. MILSTAR

Answer: (A)

The ability to carry secure voice, data, and video in real time over global distances comes from a high-bandwidth satellite system designed for multimedia communications. Inmarsat B fits this role because it provides the necessary bandwidth and real-time capability to support not just telephone-grade voice and data, but video teleconferencing as well, across oceans. Security is achieved through the use of encryption at the endpoints, enabling confidential voice and data transmission over the link. In contrast, Inmarsat A is an older, heavier system with lower practical suitability for high-rate multimedia like video. Inmarsat C is designed for low-rate, store-and-forward messaging rather than live multimedia. MILSTAR is a dedicated military secure satcom focused on highly secure strategic communications and may not be described as the general system used for secure telephone data and video teleconferencing in typical, non-specialized contexts.

The ability to carry secure voice, data, and video in real time over global distances comes from a high-bandwidth satellite system designed for multimedia communications. Inmarsat B fits this role because it provides the necessary bandwidth and real-time capability to support not just telephone-grade voice and data, but video teleconferencing as well, across oceans. Security is achieved through the use of encryption at the endpoints, enabling confidential voice and data transmission over the link.

In contrast, Inmarsat A is an older, heavier system with lower practical suitability for high-rate multimedia like video. Inmarsat C is designed for low-rate, store-and-forward messaging rather than live multimedia. MILSTAR is a dedicated military secure satcom focused on highly secure strategic communications and may not be described as the general system used for secure telephone data and video teleconferencing in typical, non-specialized contexts.