Cisco IP Phone CP-8841-K9, widescreen VGA, High-quality Voice Communication, cisco EnergyWise

Audio codec support

• G.711 a-law and mu-law, G.722, G.729a, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC)

Key call features support

• + Dialing

• Abbreviated dialing

• Adjustable ring tones and volume levels

• Adjustable display brightness

• Agent greeting

• Auto-answer

• Auto-detection of headset

• cBarge

• Busy Lamp Field (BLF)

• Busy Lamp Field (BLF) Pickup

• Busy Lamp Field (BLF) speed dial

• Callback

• Call forward

• Call forward notification

• Call filter

• Call history lists

• Call park

• Call pickup

• Call timer

• Call waiting

• Call chaperone

• Caller ID

• Corporate directory

• Conference, including traditional Join feature

• Cross Cluster Extension Mobility (EMCC)

• Direct transfer

• Extension mobility

• Fast-dial service

• Forced access codes and client matter codes

• Group call pickup

• Hold

• Intercom

• Immediate divert

• Malicious-caller ID

• Message-waiting indicator (MWI)

• Meet-me conference

• Mobility

• Music on hold (MoH)

• Mute

• Network profiles (automatic)

• On- and off-network distinctive ringing

• Personal directory

• PickUp

• Predialing before sending

• Privacy

• Private Line Automated Ringdown (PLAR)

• Redial

• Ring tone per line appearance

• Service Uniform Resource Locator (URL)

• Shared line

• Silent monitoring and recording

• Speed dial

• Time and date display

• Transfer

• Uniform Resource Identifier (URI) dialing

• Visual voice mail

• Voice mail

• Whisper coaching

Electronic hookswitch

• You can control the hookswitch electronically with a third-party headset connected to either the USB port or auxiliary port, or directly paired with the phone through bluetooth.

Cisco Intelligent Proximity

• Audio path moving sends audio through the IP Phone 8851 for a mobile device-connected call.

• Call history synchronization allows you to view placed and missed calls of your mobile device from the
  IP Phone 8851.

• Contact synchronization allows you to synchronize the contact objects from your mobile device to your
  IP Phone 8851.

Quality-of-service (QoS) options

• The phone supports Cisco Discovery Protocol and 802.1Q/p standards, and can be configured with an 801.1Q VLAN header containing the VLAN ID overrides configured by the Admin VLAN ID.

Network features

• Session Initiation Protocol (SIP) for signaling

• Session Description Protocol (SDP)

• IPv4 and IPv6

• User Datagram Protocol (UDP) (used only for Real-Time Transport Protocol [RTP] streams)

• Dynamic Host Configuration Protocol (DHCP) client or static configuration

• Gratuitous Address Resolution Protocol (GARP)

• Domain Name System (DNS)

• Trivial File Transfer Protocol (TFTP)

• Secure Hypertext Transfer Protocol (HTTPS)

• VLAN

• Real-Time Transport Protocol (RTP)

• Real-Time Control Protocol (RTCP)

• Cisco Peer-to-Peer Distribution Protocol (PPDP)

• Cisco Discovery Protocol

• LLDP (including LLDP-MED)

• Switch speed auto-negotiation

Security features

• Secure boot

• Secure credential storage

• Device authentication

• Configuration file authentication and encryption

• Image authentication

• Random bit generation

• Hardware cryptographic acceleration

• Certificate Authority Proxy Function (CAPF)

• Manufacturer-Installed Certificates (MIC)

• Locally Significant Certificates (LSC)

• Ethernet 802.1x supplicant options: Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST) and Extensible Authentication Protocol-Transport Layer Security (EAP-TLS)

• Signaling authentication and encryption using TLS

• Media authentication and encryption using SRTP

• HTTPS for client and server

• Secure Shell (SSH) Protocol server

• Secure Sockets Later (SSL)-based VPN client

Physical dimensions
(H × W × D)

• 9.02 x 10.13 x 1.57 in. (229.1 x 257.34 x 40 mm) (excluding foot stand)

Weight (with handset)

• 2.62 lb (1.19 kg)

Phone-casing composition

• Polycarbonate acrylonitrile butadiene styrene (ABS) textured plastic; Cosmetic class A

Operational temperature

• 32 to 104°F (0 to 40°C)

Nonoperational temperature shock

• 14 to 140°F (-10 to 60°C)

Humidity

• Operating 10 to 90%, noncondensing

• Non-operating 10 to 95%, noncondensing

Language support

• Arabic (Arabic Area)

• Bulgarian (Bulgaria)

• Catalan (Spain)

• Chinese (China)

• Chinese (Hong Kong)

• Chinese (Taiwan)

• Croatian (Croatia)

• Czech (Czech Republic)

• Danish (Denmark)

• Dutch (Netherlands)

• English (United Kingdom)

• Estonian (Estonia)

• French (France)

• French (Canada)

• Finnish (Finland)

• German (Germany)

• Greek (Greece)

• Hebrew (Israel)

• Hungarian (Hungary)

• Italian (Italy)

• Japanese (Japan)

• Latvian (Latvia)

• Lithuanian (Lithuania)

• Korean (Korea Republic)

• Norwegian (Norway)

• Polish (Poland)

• Portuguese (Portugal)

• Portuguese (Brazil)

• Romanian (Romania)

• Russian (Russian Federation)

• Spanish (Columbia)

• Spanish (Spain)

• Slovak (Slovakia)

• Swedish (Sweden)

• Serbian (Republic of Serbia)

• Serbian (Republic of Montenegro)

• Slovenian (Slovenia)

• Thai (Thailand)

• Turkish (Turkey)

Certification and compliance

• Regulatory compliance

?   CE Markings per directives 2004/108/EC and 2006/95/EC

• Safety

?   UL 60950 Second Edition

?   CAN/CSA-C22.2 No. 60950 Second Edition

?   EN 60950 Second Edition (including A11 & A12)

?   IEC 60950 Second Edition (including A11 & A12)

?   AS/NZS 60950

?   GB4943

• EMC - Emissions

?   47CFR Part 15 (CFR 47) Class B

?   AS/NZS CISPR22 Class B

?   CISPR22: 2005 w/Amendment 1: 2005 Class B

?   EN55022: 2006 w/Amendment 1: 2007 Class B

?   ICES003 Class B

?   VCCI Class B

?   EN61000-3-2

?   EN61000-3-3

?   KN22 Class B

• EMC - Immunity

?   EN55024

?   CISPR24

?   EN60601-1-2

?   KN24

?   Armadillo Light

• Telecom

?   FCC Part 68 HAC

?   CS-03-HAC

?   AS/ACIF S004

?   AS/ACIF S040

?   NZ PTC 220

?   Industry Standards: TIA 810 and TIA 920

?   Industry Standards: IEEE 802.3 Ethernet, IEEE 802.3af and 802.3at

?   Korea (RRA Public Notification 2010-36, Nov 01, 2010)

?   Korea (RRA Announce 2011-2, Feb 28, 2011)

• Radio

?   FCC Part 2.1093 (BT RF Exposure TR)

?   RSS-102 (BT RF Exposure TR)

?   RSS-210

?   EN 300.328

?   EN50385 (BT RF Exposure TR)

?   EN 301-489-1

?   EN 301-489-17

?   NCC LP0002

?   Korea (RRL No. 2006-128, RRL No. 2006-129)

?   Japan Bluetooth GFSK/EDR