AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 177)

4-14 41-001343-01 Rev 03, Release 3.2.2
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For the 6739i:
1 Press the Options key on the phone to enter the Options List.
2 Press Advanced. A keyboard displays.
3 Enter the Administrator password using the keyboard. Default is “22222”.
4 Press Network.
5 Press DHCP Settings.
6 Press DHCP Download Options.
7 Select and press the “Option 77” value.
8 Press until the Options List screen displays.
9 Press Restart to restart the phone for the change to take affect.
Aastra Web UI
1 Click on Advanced Settings->Network->Advanced Network Settings.
2 In the “DHCP User Class” field, enter a DHCP User Class to apply to your phones. For example,
“admin”. Valid values are up to 64 alpha-numeric characters.
Aastra IP Phone UI
Step Action
DHCP User Class