CP-8811-W-K9= Specification

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

• + 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

• You can control the hookswitch electronically with a third-party headset connected to an auxiliary port.

• 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.

• 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

• 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

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

• 2.58 lb (1.17 kg)

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

• 32 to 104°F (0 to 40°C)

• 14 to 140°F (-10 to 60°C)

• Operating 10 to 90%, noncondensing
• Nonoperating 10 to 95%, noncondensing

• Arabic (Arabic Area)
• English (United Kingdom)