Reset IP 301, 501, 550, 600, 601, and 650
- Power down phone
- Hold down 4,6,8,* while booting.
- When prompted, enter password (default is 456).
- Phone should reset to default and reboot.
- After reboot, press Menu-> 3. Settings->2.Advanced
- Enter default password (456), 1. Admin Settings ->SIP Server configuration
- Server 1 =
Reset IP 320, 321, 330. 331, 335, 430, and 450
Cancel the Boot Process and then press the 1,3,5 and 7 keys together the phone should prompt you the following: Enter Password to Reset Settings: