Product Safety And Security; Safety And Performance Information; Power Outage; Regulatory Domains - Cisco 8841 User Manual

Product Safety and Security

Safety and Performance Information

Power Outage

Your access to emergency service through the phone requires that the phone receive power. If
a power interruption occurs, service or emergency calling service dialing does not function until
power is restored. If a power failure or disruption occurs, you may need to reset or reconfigure
the equipment before you can use service or emergency calling service dialing.

Regulatory Domains

The radio frequency (RF) for this phone is configured for a specific regulatory domain. If you use
this phone outside of the specific regulatory domain, the phone will not function properly, and
you might violate local regulations.

Health-Care Environments

This product is not a medical device and uses an unlicensed frequency band that is susceptible
to interference from other devices or equipment.
External Devices
We recommend that you use good-quality external devices that are shielded against unwanted
radio frequency (RF) and audio frequency (AF) signals. External devices include headsets,
cables, and connectors.
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, we recommend
that you take one or more of these 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.
•
Apply ferrites or other such devices on the cables for the external device.
Cisco cannot guarantee the performance of external devices, cables, and connectors.
In European Union countries, use only external speakers, microphones, and headsets that are
fully compliant with the EMC Directive [89/336/EC].

Bluetooth Wireless Headset Performance

Cisco IP Phones support Bluetooth Class 2 technology when the headsets support Bluetooth.
Bluetooth enables low-bandwidth wireless connections within a range of 30 feet (10 meters).
The best performance is in the 3- to 6-foot (1- to 2-meter) range. You can connect up to five
headsets, but only the last one connected is used as the default.
Because of potential interference issues, we recommend that you move 802.11b/g devices,
Cisco IP Phone 8841/8851 Multiplatform Phones User Guide
Product Safety and Security
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