Ericsson T39 - Manual (Page 50)

50
WAP profiles 5 WAP profiles, each with its own settings
WTLS (security) Yes,
WTLS Class 1 - Encoding
WTLS Class 2 - Encoding + Server Authentication. Root
Certificates needed in phone
WTLS Class 3 - Encoding + Server Authentication, Client
Certification, Root and Client Certificates needed in phone
Feature Support in the T39 WAP browser