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Grandstream Networks, Inc. HT496 User Manual Page 29 of 29
Firmware 1.0.3.86 Last Updated: 7/2007
RESTORE FACTORY DEFAULT SETTING
WARNING! Restoring the Factory Default Setting will DELETE all configuration information of the phone.
Please BACKUP or PRINT out all the settings before you approach to following steps. Grandstream will
not take any responsibility if you lose all the parameters of setting and cannot connect to your VoIP
service provider.
RESET VIA IVR
1. Find the MAC address of the device. It is a 12 digits HEX number located on the bottom
of the unit.
2. Encode the MAC address. Please use the following mapping:
0-9: 0-9
A: 22
B: 222
C: 2222
D: 33
E: 333
F: 3333
For example, if the MAC address is 000b8200e395, it should be encoded as
“0002228200333395”.
3. To perform factory reset:
- Pick up the headset and dial “***” for voice prompt.
- Enter “99” and get the voice prompt “Reset”.
- Enter the encoded MAC address of the device.
- Wait for 15 seconds. The device will reboot automatically and restore to factory
default setting.
NOTE:
1. Factory Reset will be disabled if the “Lock keypad update” is set to “Yes”.
2. By default, the HT496 WAN side HTTP access is disabled.
3. After a factory reset, the device’s web configuration page accessible only from its LAN port.