Aastra Telecom 53I - Manual (Page 109)

Sylantro Interoperability Features
RN-001029-00, Rev 03, Release 2.1 103
5i Series IP Phone Release Notes
Configuring Whitelist Proxy Support Using the Aastra Web UI
Use the following procedure to configure the whitelist proxy feature using the
Aastra Web UI.
Aastra Web UI
1 Click on Advanced Settings->Global SIP->Advanced SIP Settings
2 The "Whitelist Proxy" field is disabled by default. To enable this field, check the box. This feature
allows you to enable or disable the whitelist proxy support on the IP Phone.
3 Click to save your changes.