Datasheet

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Other key features of the phone follow:
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The Cisco IP Phone 8851 offers a 5-in. high-resolution (800 x 480) widescreen VGA backlit color display.
Localized language support, including right-to-left on-screen text, meets the needs of global users.
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The phone supports a built-in Gigabit Ethernet switch for your PC connection.
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Support for Cisco EnergyWise
™
technology makes the Cisco IP Phone 8851 more energy-efficient and
ecofriendly; the phone is qualified by the Energy Star organization.
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An optional wall-mount kit is orderable as a spare part for customers seeking this capability.
Features and Benefits
Table 1 lists features and benefits of the Cisco IP Phone 8851.
Table 1. Features and Benefits of Cisco IP Phone 8851
Features
Benefits
Hardware Features
Ergonomic design
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The phone offers an easy-to-use interface and provides a traditional telephony-like user experience.
Graphical display
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The 800 × 480, 24-bit color, 5-in. WVGA display provides scrollable access to calling features and text-based
XML applications.
Handset
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The handset is a standard wideband-capable audio handset (connects through an RJ-9 port).
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The standard coiled cord has a custom end for concealed cable routing beneath the phone
(cord length is approximately 21 in. [55 cm] coiled and up to 72 in. (183 cm) extended).
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The handset is hearing aid-compatible (HAC) and meets Federal Communications Commission (FCC)
loudness requirements for the Americans with Disabilities Act (ADA). You can achieve Section 508 loudness
requirements by using industry-standard inline handset amplifiers such as Walker Equipment W-10 or CE-100
amplifiers. The dial pad is also ADA-compliant.
Speaker phone
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A full-duplex speakerphone gives you flexibility in placing and receiving calls with hands free.
Analog headset
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The analog headset jack is a standard wideband-capable RJ-9 audio port.
AUX port
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You can use an auxiliary port to support electronic hookswitch control with a third-party headset connected
to it.
USB
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A side USB port enhances the usability of call handling by enabling wired or wireless headsets, as well as
provides up to 500-mA power output at 5V or 2.5W for smartphone charging.
Ethernet switch
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An internal 2-port Cisco Ethernet switch allows for a direct connection to a 10/100/1000BASE-T Ethernet
network (IEEE 802.3i/802.3u/802.3ab) through a RJ-45 interface with single LAN connectivity for both the
phone and a co-located PC.
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The system administrator can designate separate VLANs (IEEE 802.1Q) for the PC and phone, providing
improved security and reliability of voice and data traffic.
Bluetooth
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Bluetooth 3.0 Enhanced Data Rate (EDR) Class 1 technology (up to 66-ft [20m] range) is supported.
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Hands-Free Profile (HFP) is supported for untethered headset connections and voice communications.
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Phone Book Access Profile (PBAP) is supported for phone book object exchange between devices.
Keys
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The phone has the following keys:
◦ Line keys
◦ Soft keys
◦ Back and release keys
◦ Four-way navigation and select keys
◦ Hold/Resume, Transfer, and Conference keys
◦ Messaging, Application, and Directory keys
◦ Standard keypad
◦ Volume-control toggle key
◦ Speakerphone, headset, and mute keys
Backlit indicator
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The phone supports backlit indicators for the audio path keys (handset, headset, and speakerphone), select
key, line keys, and message waiting.
Replaceable bezel
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The phone includes a black bezel; an optional silver bezel is also orderable separately.