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Teledex IP250D User’s Guide SIP/MGCP Part Number 600-0480-6023
APPENDICES
Once the downloader application is running, the unit’s web page will display downloader
options only, and not application choices such as protocol (SIP or MGCP) and audio
codecs. In any of the above safe modes, VLAN will be disabled.
8.1 ’SAFE’ MODES ON AN IP PHONE
The IP Phone can be forced into a ‘safe’ downloader mode by doing the following:
1) Take the handset off-hook.
2) To restore the device's factory defaults (no call agent, boot using DHCP),
continue holding down the ‘1’ key for four (4) seconds during power up.
The IP250D’s LCD will display a countdown during the four second timeout.
After four seconds, the config file will be erased, and the unit will reboot the
main application.
3) To use 10.1.0.54, press the star (*) key during power up.
4) To use a previously-configured fixed IP address, press the ‘0’ key during power
up. If no fixed IP address was previously configured, the unit will use DHCP to
acquire an IP address.
5) To use DHCP, press the pound (#) key during power up.
9 Appendix C: Restoring Factory Defaults
This section describes how to restore the factory default settings of your IP250D.
Restoring the default settings is equivalent to clearing the internal ROM configuration
file. The IP250D can be restored to its default settings by doing the following:
1) Take the handset off hook.
2) Power cycle the device while holding down key ‘1’ for four (4) seconds. The
display will count down, indicating the time remaining until the factory defaults
will be restored. After four (4) seconds, the message DEFAULTS RESTORED will be
displayed on the LCD, and the phone will reboot.
The same result can be obtained by using the t2burn application and specifying an empty
configuration file. For example:
t2burn NONE NONE empty.cfg <platform>
(where empty.cfg is an empty config file).
Note: It is important that the ‘1’ key be held for four (4) seconds from the point at which
the unit reboots. Releasing the ‘1’ key before four seconds elapse will abort the restoration
and continue with the normal booting procedure.