Headsets; Important Headset Safety Information - Cisco 840 User Manual

Headsets

• USB charger—Use the approved power supply.
• Spare batteries
• Scanner handle—For the Cisco Wireless Phone 840S only.
• Clips
• Cases—For the Cisco Wireless Phone 860 and 860S only.
Related Topics

Headsets

You can use wired and Bluetooth
Although we perform some internal testing of third-party wired and Bluetooth wireless headsets for use with
the Cisco Wireless Phone 840 and 860, we don't certify or support products from headset or handset vendors.
Because of the inherent environmental and hardware inconsistencies in the locations where phones are deployed,
there's not a single "best" solution that is optimal for all environments. We recommend that customers test
the headsets that work best in their environment before deploying many units in their network.
Note
We recommend the use of good quality external devices, like headsets that are screened 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 cell phones and two-way radios, some audio noise may still occur.
The primary reason that a particular headset would be inappropriate for the phone is the potential for an audible
hum. This hum can be heard by either the remote party or by both the remote party and you, the phone user.
Some potential humming or buzzing sounds can be caused by a range of outside sources, for example, electric
lights, electric motors, or large PC monitors. In some instances, the mechanics or electronics of various headsets
can cause remote parties to hear an echo of their own voice when they speak to phone users.

Important headset safety information

Cisco Wireless Phone 840 and 860 User Guide
116
• Cisco Wireless Phone 840 Multicharger
• Cisco Wireless Phone 840 Battery Multicharger
• Cisco Wireless Phone 860 Multicharger Base—Holds up to four 860 Desktop Charger Modules (in
any configuration: Dual or Battery).
Cisco accessory part numbers, on page 127
Charge the battery with the AC power
Charge the battery with the USB cable and a USB port on your
The Cisco Wireless Phone 840 and 860 hasn't been tested for wired and Bluetooth headsets in hazardous
locations.
High Sound Pressure—Avoid listening to high volume levels for long periods to prevent
possible hearing damage.
supply, on page 45
®
headsets with your phone.
Accessories
computer, on page 46