Aastra Telecom 53I - Manual (Page 37)

Security Features
RN-001029-00, Rev 03, Release 2.1 31
5i Series IP Phone Release Notes
Configuring TLS Using the Aastra Web UI
To configure TLS using the Aastra Web UI, you must enable TLS or Persistent
TLS first. Then you must define the TLS certificate file names that you want the
phone to use. Use the following procedure to configure TLS using the Aastra Web
UI.
Aastra Web UI
1 Click on Advanced Settings->Global SIP->Advanced SIP Settings.
2 In the "Transport Protocol" field, select TLS or Persistent TLS.
Note: If configuring Persistent TLS, you must go to Advanced Settings->Global SIP->Basic Network
Settings and configure the “Outbound Proxy Server” and “Outbound Proxy Port” parameters.
3 Click to save your changes.