National Security Emergency Preparedness Telecommunications Services definition in Computer Security terms:
Definition(s): Telecommunications services that are used to maintain a state of readiness or to respond to and manage any event or crisis (local, national, or international) that causes or could cause injury or harm to the population, damage to or loss of property, or degrade or threaten the national security or emergency preparedness posture of the United States.
Source(s): CNSSI 4009-2015 (47 C.F.R., Part 64 Appendix A)
NIST SP 800-18 Rev. 1
NIST SP 800-53 Rev. 4 (47 C.F.R., Part 64 Appendix A)
reference: CSRC Glossary