Lennox Hearth INTER-TEL 8662 - Manual (Page 7)

Mitel ® Model 8662 User Guide – Issue 12, October 2008 Page iii
Power Requirements
The IP endpoint requires any one of the following power supplies:
• Inter-Tel Power Supply Unit, part number 806.1114 or 806.1117 (Europe), or Mitel Universal Power Supply Unit,
part number 828.1766
• Red Hawk Single Port PowerSense TM , Part Number 901.0407
• An industry-standard IEEE 802.3af Power over Ethernet (PoE) power supply unit
If your endpoint uses a centralized PoE power supply unit, do not use the 48-volt DC Ethernet power adaptor. If
necessary, contact your system administrator for assistance before connecting your endpoint to the centralized power
source.
Make sure the endpoint is plugged into an uninterruptible power supply (UPS). If your endpoint is plugged into the
UPS and the power fails, it should remain powered on for about 10 minutes. If the endpoint is not plugged into a UPS
and the power fails, the current call is dropped and you will not be able to use the endpoint until the power is restored.
Software and Firmware Updates
If you are using an IP endpoint, it may require occasional software updates when new versions are available. The
endpoint is configured to download the updates automatically. Contact your system administrator for more
information. During the download process several messages are shown on the display that indicate the status of the
download. The final display message, FIRMWARE DOWNLOAD SUCCESS or BOOT DOWNLOAD SUCCESS,
indicates that the software or firmware update was downloaded successfully.
Immediately following the download your endpoint will re-synchronize with the telephone system by performing a
reset. When the display returns to your extension number, your user name, the time of day, and the date, the reset is
complete and you can use your endpoint again. During a reset, your endpoint (and all connected devices) lose
connectivity with the network for approximately 10 -20 seconds.
Software Compatibility
Depending upon which software version your telephone system is using, some of the features included in this guide
may not be available for your endpoint. Check with your system administrator to see which software version your
telephone system currently uses and if there are any feature restrictions for your system.
CAUTION
Endpoint Damage Hazard. If you are using an IP endpoint, make sure it is connected to the proper power supply
before powering on. Contact your system administrator for more information.
CAUTION
Endpoint Damage Hazard. Do not use your IP IP endpoint or disconnect it from the power supply while it is updating
software.This ensures that the software or firmware update is downloaded successfully. Do not disconnect the
endpoint from the power supply during the download process. Disconnecting the endpoint’s power supply while the
endpoint is downloading an update may cause serious damage to the endpoint.