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Charcoal Cisco 8811 IP desk phone with 5-inch display

Cisco Systems, Inc.

Cisco Systems, Inc. CP-8811-K9= 8811 IP Phone

SKU CH-5XH2-7MA75 MPN CP-8811-K9=

A corded VoIP desk phone with five line keys, a five-inch display, dual RJ-45 ports for PoE connectivity, and wideband audio codecs including G.711, G.722, G.729 and iLBC

  • TypeAccessories
  • ProtocolsTCP/IP
  • Weight3.3
  • SpecificationsAudio codec support : G.711a-law and mu-law, G.722, G.729a,
  • FeaturesNetwork features: Session Initiation Protocol (SIP) for sign
  • Crystal-clear calls with G.711, G.722, G.729 and iLBC codec support
  • Secure voice communications via encrypted signalling and media streams
  • Reliable uptime through Cisco Discovery Protocol and QoS options
  • Flexible deployment with dual RJ-45 ports and PoE power
  • Ergonomic 5-line design boosts productivity for midsize to large enterprises

Business-class VoIP endpoint

The Cisco IP Phone 8811 is a corded VoIP handset built for midsize and large enterprises. It delivers wideband audio through supported codecs including G.711, G.722, G.729a, iLBC and iSAC. The unit connects via two RJ-45 ports with Power over Ethernet support. A 5-inch display and five line keys provide direct access to unified communications features.

Suited for desk-based knowledge workers

This phone fits employees who need reliable, encrypted voice sessions and quick access to multiple lines on a single device. SIP signalling, IPv4 and IPv6, and Cisco Discovery Protocol ensure integration with existing Cisco call-control platforms. Buyers requiring wireless mobility, colour touchscreens or video calling should evaluate other form factors.

Five programmable line keys

Five total line appearances let each user manage several concurrent calls or shared extensions without navigating menus. This line-count directly determines how many distinct conversations or monitoring functions a single handset can handle. Confirm the required line appearance count matches your deployment design before ordering.

Highlights

  • Crystal-clear calls with G.711, G.722, G.729 and iLBC codec support
  • Secure voice communications via encrypted signalling and media streams
  • Reliable uptime through Cisco Discovery Protocol and QoS options
  • Flexible deployment with dual RJ-45 ports and PoE power
  • Ergonomic 5-line design boosts productivity for midsize to large enterprises

Specifications

BrandCisco
ModelCP-8811-K9=
TypeAccessories
ProtocolsTCP/IP
Weight3.3
SpecificationsAudio codec support : G.711a-law and mu-law, G.722, G.729a, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC)
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
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 Fiel
FeaturesNetwork 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 (includin
Shipping weight2.27 kg
Package size127 × 127 × 127 mm

Questions about this item

How does the 5‑line capacity affect daily use on this 8811 phone?

Five programmable line keys let you handle multiple calls, monitor colleagues' extensions or access features like speed dial without scrolling through menus.

What does the dual RJ‑45 interface mean for network speed?

Each port handles standard Ethernet signalling; the phone negotiates the highest rate the connected switch supports.

What mounting options suit the CP‑8811‑K9= in an office?

The handset includes an adjustable desk stand and built‑in wall‑mount slots, so it can sit flat, tilt upward or hang on a standard wall plate.

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