Telephone systems used for sensitive or classified conversations encrypt all traffic that passes over external systems.
Topic
Protecting conversations
Applicable to
all
History
Priority
must
2015
Agencies intending to use telephone systems for the transmission of sensitive or classifiedinformation must ensure that:• the system has been accredited for the purpose• all sensitive or classified traffic that passes over external systems isappropriately encrypted.
2010
Agencies intending to use telephone systems for the transmission of classified information must ensure:• the system has been accredited for the purpose• all classified traffic that passes over external systems is appropriately encrypted.
2008
Agencies intending to use telephone systems for the transmission of classified information must ensure that: a. the system has been accredited for the purpose, including the completion of a risk assessment and formal acceptance of the residual risks b. all classified traffic that passes over external systems is encrypted in accordance with the level of encryption specified for the classification of the information being communicated.