Configuring Security Features
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IP phones support TLS version 1.0. A cipher suite is a named combination of authentication,
encryption, and message authentication code (MAC) algorithms used to negotiate the security
settings for a network connection using the TLS/SSL network protocol. IP phones support the
following cipher suites:
DHE-RSA-AES256-SHA
DHE-DSS-AES256-SHA
AES256-SHA
EDH-RSA-DES-CBC3-SHA
EDH-DSS-DES-CBC3-SHA
DES-CBC3-SHA
DES-CBC3-MD5
DHE-RSA-AES128-SHA
DHE-DSS-AES128-SHA
AES128-SHA
RC2-CBC-MD5
IDEA-CBC-SHA
DHE-DSS-RC4-SHA
RC4-SHA
RC4-MD5
RC4-64-MD5
EXP1024-DHE-DSS-DES-CBC-SHA
EXP1024-DES-CBC-SHA
EDH-RSA-DES-CBC-SHA
EDH-DSS-DES-CBC-SHA
DES-CBC-SHA
DES-CBC-MD5
EXP1024-DHE-DSS-RC4-SHA
EXP1024-RC4-SHA
EXP1024-RC4-MD5
EXP-EDH-RSA-DES-CBC-SHA
EXP-EDH-DSS-DES-CBC-SHA
EXP-DES-CBC-SHA
EXP-RC2-CBC-MD5
EXP-RC4-MD5