Cisco 7920 Phone Manual page 20

When discarding a battery pack, contact your local waste disposal provider regarding
Caution
local restrictions on the disposal or recycling of batteries.
To obtain a replacement battery, contact your local dealer. Use only the batteries that have
Caution
a Cisco part number.
Standard battery—
Extended use battery—CP-BATT-7920-EXT
Caution Use only the Cisco power supply that was provided with your phone. If you need to replace
your power supply, refer to the list of Cisco part numbers.
North America—CP-PWR-7920-NA
Central Europe—
United Kingdom—CP-PWR-7920-UK
China—CP-PWR-7920-CN
Japan—CP-PWR-7920-JP
To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance
and Safety Information for the Cisco Wireless IP Phone 7920 document that accompanied this
product.
Power Outage
Your accessibility to emergency service through the phone is dependent on the wireless access point
being powered. If there is an interruption in the power supply, Service and Emergency Calling Service
dialing will not function until power is restored. In the case of a power failure or disruption, you may
need to reset or reconfigure equipment before using the Service or Emergency Calling Service dialing.
Using External Devices
The following information applies when you use external devices with the Cisco Unified IP Phone:
Cisco recommends the use of good quality external devices (such as headsets) that are shielded against
unwanted radio frequency (RF) and audio frequency (AF) signals.
Depending on the quality of these devices and their proximity to other devices such as mobile phones
or two-way radios, some audio noise may still occur. In these cases, Cisco recommends that you take
one or more of the following actions:
• Move the external device away from the source of the RF or AF signals.
• Route the external device cables away from the source of the RF or AF signals.
• Use shielded cables for the external device, or use cables with a better shield and connector.
• Shorten the length of the external device cable.
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CP-BATT-7920-STD
CP-PWR-7920-CE
OL-9474-01