Aastra 9000i Series Administrator's Manual page 243

For the 6739i:
IP Phone UI
Step Action
1 Press the Options key on the phone to enter the Options List.
2 Press the Advanced button. A keyboard displays.
3 Enter the Administrator password using the keyboard. Default is "22222".
4 Press the SIP button.
Configuring Proxy IP and Proxy Port
5 Press Proxy Server and enter an IP address or fully qualified host name in the Proxy Server field.
Default is 0.0.0.0.
6 Press Proxy Port and enter a Proxy Port number in the Proxy Port field for accessing the SIP proxy
server. For example, 5060. Default is 0.
Configuring Registrar IP and Registrar Port
7 Press Registrar Server and enter an IP address or fully qualified host name in the Registrar Server
field. Default is 0.0.0.0.
A global value of 0.0.0.0 disables registration. However, the phone is still active and you can dial
using username@ip address of the phone.
If the Registrar IP address is set to 0.0.0.0 for a per-line basis (i.e, line 1, line 2, etc.), then the
register request is not sent, the "No Service" message does not display, and the message waiting
indicator (MWI) does not come on.
8 Press Registrar Port and enter a Registrar Port number in the Registrar Port field for accessing the
SIP registrar server. For example, 5060. Default is 0.
9 Press until the Options List screen displays.
10 Press Restart to restart the phone for the change to take affect.
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Note: You can set global configuration only using the IP Phone UI.
41-001343-01 Rev 02, Release 3.2.2