Change SSL and TLS Version
This topic describes how to change SSL and TLS version used on the Yeastar K2 IPPBX.
Procedure
- Log in to PBX web interface, go to .
- In the drop-down list of System Security Level,
select a type to change the SSL and TLS version.
- High Level: The system only supports TLS
1.2 protocol. Note: We recommend that you select High Level to ensure secure communication over network.
- Low Level: The system only supports TLS
1.0, TLS 1.1, TLS 1.2, and SSL 3.0 protocols. Note: If users wants to access the PBX via a web browser or a 3-rd party software, which doesn't support TLS 1.2 protocol, select Low Level.
- High Level: The system only supports TLS
1.2 protocol.
- Click Save.
Result
The web browser or the 3rd-party software needs to enable the same version of TLS/SSL before they can access the PBX.