Documentation in various places refers to SSL, TLS or SSL/TLS. I believe that since only TLS 1.0, 1.1 and 1.2 are enabled (by default) in the broker (ENTMQ-1605, ARTEMIS-563), it would be best to call it TLS consistently.
I am not sure how it is with Interconnect in this regard.

• https://github.com/rh-messaging/amq7-documentation-contrib/search?utf8=%E2%9C%93&q=SSL
• https://github.com/rh-messaging/amq7-documentation-contrib/search?utf8=%E2%9C%93&q=TLS