Cisco 8851NR User Manual

Step 4 Press Exit.
Headsets
There are a number of Cisco and third party headsets available for use on your Cisco IP phones and devices.
For additional information about Cisco headsets, see http://www.cisco.com/c/en/us/products/
unified-communications/uc_endpoints_accessories.html. For a list of suggested third party headsets and other
audio accessories, see
http://www.cisco.com/c/en/us/products/unified-communications/uc_endpoints_accessories.html..
Related Topics
Supported Accessories, on page 91
Important Headset Safety Information
High Sound Pressure—Avoid listening to high volume levels for long periods to prevent
possible hearing damage.
When you plug in your headset, lower the volume of the headset speaker before you put the headset on. If
you remember to lower the volume before you take the headset off, the volume will start lower when you
plug in your headset again.
Be aware of your surroundings. When you use your headset, it may block out important external sounds,
particularly in emergencies or in noisy environments. Don’t use the headset while driving. Don’t leave your
headset or headset cables in an area where people or pets can trip over them. Always supervise children who
are near your headset or headset cables.
Cisco Headset 500 Series
The following Cisco headsets are available:
• Cisco Headset 521—A headset with a single earpiece that comes with an inline USB controller.
• Cisco Headset 522—A headset with a dual earpiece that comes with an inline USB controller.
• Cisco Headset 531—A headset with a single earpiece that can be used as either a standard headset or a
USB headset with the USB adapter.
• Cisco Headset 532—A standard headset with a dual earpiece that can be used as either a standard headset
or a USB headset with the USB adapter.
• Cisco Headset 561—A wireless headset with a single earpiece that comes with a base.
• Cisco Headset 562—A wireless headset with a dual earpiece that comes with a base.
Cisco Headset 521 and 522
The Cisco Headset 521 and 522 are two wired headsets that have been developed for use on Cisco IP Phones
and devices. The Cisco Headset 521 features a single earpiece for extended wear and comfort. The Cisco
Headset 522 features two earpieces for use in a noisy workplace.
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Cisco 8851NR Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Case material	Acrylonitrile butadiene styrene (ABS)
Product color	Charcoal
Wall mountable	Yes
Lines quantity	5 lines
Phonebook capacity	- entries
Number of VoIP accounts	-
Volume control	Digital
Display diagonal	5 \
Display resolution	800 x 480 pixels
Voice codecs	G.711Mu, G.711a, G.722, G.729A, iLBC
Number of microphones	1
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	IEEE 802.3i/802.3u/802.3ab
Ethernet LAN (RJ-45) ports	2
Storage temperature (T-T)	-10 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 90 %
Number of handles included	- pc(s)

Weight and Dimensions

Depth	257.34 mm
Width	229.1 mm
Height	40 mm
Weight	1190 g