Aastra Telecom 9480i CT Series User Manual

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41-001160-03, Rev 00, Releaes 2.4 

IP Phone Administrator Guide

When an IP phone receives an incoming call, the IP phone does the following 
actions:

•

Checks to see if the incoming call is from a registered proxy server.

•

If the call is forwarded via a registered proxy server, then the message has 
already been verified and authenticated by the server. The caller is part of the 
Trust Network. The IP phone UI displays the caller information contained in 
the PAI header. 

•

If the call is not forwarded via a registered proxy server - and therefore is not 
a “Trusted Entity” - the IP phone UI does not display any trust information 
contained in the PAI header. 

You use the following parameters to configure TLS in the configuration files:

For the specific parameters you can set in the configuration files for setting TLS, see Appendix A, the 
section, 

 on 

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