CP - 8811 - K9 High quality Voice Communication8800 IP Phone Cisco CP-8811-K9 integrates 5 inches high-resolution widescreen backlit grayscale display, localized language support to meet the needs of global users, the five programmable line keys can be configured to support multiple directory numbers and various calling features,the fixed function keys allow you one-touch access to applications, messaging, directory and conference. Backlit acoustic keys provide flexibility for audio path selection and switching. CP-8811-K9 Specifications Audio codec support G.711a-law and mu-law, G.722, G.729a, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC) Call features + 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 an auxiliary port. 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 Layer (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) 2.58 lb (1.17 kg) Phone-casing composition Polycarbonate acrylonitrile butadiene styrene (ABS) textured plastic, Cosmetic class A Operational temperature 32 to 104F (0 to 40C) Nonoperational temperature shock 14 to 140F (-10 to 60C) Humidity Operating 10 to 90%, noncondensing Nonoperating 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) the comparison of Cisco IP Phone 8811, 8831, 8841 and 8851. Model CP-8811-K9 CP-8831-K9 CP-8841-K9 CP-8851-K9 Ethernet Switch 10/100/1000 10/100 10/100/1000 10/100/1000 Programmable Line Keys 4 4 4 4 Number of Line Keys 5 1 5 5 Full Duplex Speakerphone Yes Yes Yes Yes Wideband Audio Yes Yes Yes Yes PoE Classification Class 2 Class 3 Class 2 Class 3 Bluetooth / DECT No DECT (mics) No Bluetooth Third-party Call Control Yes Yes Yes Yes Replaceable Bezel Yes (Black, Silver) No Yes (Black, Silver) Yes (Black, Silver) Wall Mountable Yes No Yes Yes
