Specifications

Administrator’s Guide for SIP-T2xP IP Phones
208
to negotiate the security settings for a network connection using the TLS/SSL network
protocol. IP phones supports the following cipher suites for TLS 1.0:
 DHE-RSA-AES256-SHA
 DHE-DSS-AES256-SHA
 AES256-SHA
 EDH-RSA-DES-CBC3-SHA
 EDH-DSS-DES-CBC3-SHA
 DES-CBC3-SHA
 DHE-RSA-AES128-SHA
 DHE-DSS-AES128-SHA
 AES128-SHA
 IDEA-CBC-SHA
 DHE-DSS-RC4-SHA
 RC4-SHA
 RC4-MD5
 EXP1024-DHE-DSS-DES-CBC-SHA
 EXP1024-DES-CBC-SHA
 EDH-RSA-DES-CBC-SHA
 EDH-DSS-DES-CBC-SHA
 DES-CBC-SHA
 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-RC4-MD5
The following figure illustrates the TLS messages exchanged between the IP phone and
TLS server to establish an encrypted communication channel: