Mitel 8620 - Manual (Page 7)

Mitel ® 8620/8622 IP Phone User Guide – Issue 14, June 2010 Page iii
Power Requirements
The phone requires any one of the following power supplies:
• Power Supply Unit, part number 806.1114 or 806.1117 (Europe)
• 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 IP phone 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 IP phone to the centralized power
source.
Make sure the IP phone is plugged into an uninterruptible power supply (UPS). If your IP phone is plugged into the
UPS and the power fails, it should remain powered on for about 10 minutes. If the IP phone is not plugged into a UPS
and the power fails, the current call is dropped and you will not be able to use the IP phone until the power is
restored.
Software and Firmware Updates
The phone may require occasional software updates when new versions are available. The phone 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 IP phone 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 IP phone again. During a reset, your IP phone (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 IP phone. 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
Phone Damage Hazard. Make sure the IP phone is connected to the proper power supply before powering on.
Contact your system administrator for more information.
CAUTION
Phone Damage Hazard. Do not use your IP phone 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 IP
phone from the power supply during the download process. Disconnecting the IP phone’s power supply while the IP
phone is downloading an update may cause serious damage to the IP phone.