What purpose does the Defence Fixed Telephone System (DFTS) serve?

The Defence Fixed Telephone System (DFTS) is designed specifically to facilitate internal military communication within the armed forces. Its primary purpose is to provide secure and reliable voice communication capabilities for military personnel, enabling them to coordinate operations, share critical information, and maintain effective command and control. This system is essential for ensuring that communications among military units remain confidential and safeguarded from external interference.

Choosing this option highlights the specific nature of the DFTS, which is tailored to meet the communication needs of military operations, as opposed to general public communications, air traffic control-related communication, or emergency response systems. These other communication systems serve different audiences and functions that do not align with the primary role of the DFTS in supporting military infrastructure and operational readiness.