To display the TLS versions that have been enabled, run the following command:
# show link-encryption h248reg
TLS : yes
TLS 1.3 : yes
TLS 1.2 : no
TLS 1.1 : no
TLS 1.0 : yes
PTLS : no
Unencrypted : yes
# show link-encryption sla
TLS : yes
TLS 1.3 : yes
TLS 1.2 : no
TLS 1.1 : yes
TLS 1.0 : yes
# show link-encryption syslog
TLS : yes
TLS 1.3 : yes
TLS 1.2 : yes
TLS 1.1 : yes
TLS 1.0 : yes