Aastra 9143i Series Administrator's Manual page 698

IP Phone Administrator Guide
Advanced Operational Features
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.
Configuring TLS Using the Configuration Files
You use the following parameters to configure TLS in the configuration files:
• sip transport protocol
• sips persistent tls
• sips root and intermediate certificates
• sips local certificate
• sips private key
• sips trusted certificates
Configuration Files
For the specific parameters you can set in the configuration files for setting TLS, see Appendix A, the
section, "Transport Layer Security (TLS) Settings"
6-28
on page A-105.
41-001160-03, Rev 00, Releaes 2.4