Aastra Telecom SIP 480I - Manual (Page 252)

Advanced Operational Features
6-4 41-001129-00 Rev 09, Release 1.4.1
IP Phone Administrator Guide
Advanced Operational Features
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Aastra Web UI
Step Action
1 Click on Advanced Settings->Global SIP->Advanced SIP Setting.
2 Enable the "Send MAC Address in REGISTER Message" field by checking the check box.
(Disable this field by unchecking the box).
3 Enable the "Send Line Number in REGISTER Message" field by checking the check box.
(Disable this field by unchecking the box).
4 Click to save your settings.
Note: The session prompts you to restart the IP phone to apply the configuration settings.
5 Select Operation->Reset and click ..