Get highly secure, easy-to use, high-quality wideband audio, and comprehensive, mission-critical VoIP communications. The Cisco IP Phone 8811 is ideal for knowledge workers and remote workers across industries and businesses of all sizes. It can be deployed on Cisco on-premises, hosted, Webex Calling, and third-party call control offer flexible deployment options.

Core Features:

• High-quality, full duplex wideband audio and superior echo cancellation for exceptional clarity
• High-resolution, five-inch, widescreen grayscale display makes it easier to recognize calls and see status information
• Five-way navigation cluster and four context-sensitive soft keys make interactions more efficient
• Choice of headsets from Cisco third-party vendor partners offer flexibility
• Flexible deployment options include Cisco on-premises, hosted, and Webex Calling.
• Cisco Expressway gives remote workers single sign-on access without a VPN client
• Cisco EnergyWise reduces energy cost and carbon footprint in off-work hours
• Gigabit Ethernet and 802.3af/at Power over Ethernet reduce installation and infrastructure costs
• Cisco Webex Phone OS consolidates administration with common software to both IP Phone 8800 Series and IP Phone 7800 Series

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
Operationaltemperature
● 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
● 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)