CP-8841-K9 – Five-Line IP Phone – Color Display – Enhanced UCL

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CP-8841-K9 Description

The CP-8841-K9 is a Cisco IP Phone 8800 Series desk phone for office desks that share one network drop with a PC. The phone has five line keys, a 5-inch 800 x 480 color display and a two-port Gigabit Ethernet switch, and it draws IEEE PoE Class 2 power. The phone does not support Key Expansion Modules, and it needs an Enhanced User Connect License to register to Cisco Unified Communications Manager.

Quick Specs

Parameter

Specification

Product ID

CP-8841-K9

Product type

Cisco IP Phone 8841 desk phone

Color

Charcoal

Programmable line and feature keys

5

Display

5 in. 800 x 480 24-bit color WVGA display

Integrated switch

10/100/1000BASE-T with LAN and co-located PC connectivity

Headset ports

RJ-9 analog headset port and auxiliary EHS port

PoE class

IEEE Power over Ethernet Class 2

Power input rating

0.917A, 48V DC

CUCM license

Enhanced User Connect License

CUCM support

Cisco Unified Communications Manager 12.5 and later

Application Scenarios

Shared Desk With A PC

At an office desk with a single cable run, the phone passes traffic for a co-located PC through its internal Gigabit Ethernet switch, so one access-switch port serves both devices.

Color Screen For Staff Desks

Staff desks in a Cisco Unified Communications Manager deployment get a 5-inch 800 x 480 color display and five programmable line and feature keys for everyday call handling.

Desks Without PoE Ports

Where a desk drop comes from a switch without PoE, the phone runs from a Cisco IP Phone Power Cube 4 fitted with the country-specific AC cord.

Product Comparison

Parameter

CP-8841-K9

CP-8841-W-K9

CP-8811-K9

Display

5 in. 800 x 480 24-bit color WVGA

5 in. 800 x 480 24-bit color WVGA

5 in. 800 x 480 grayscale

Programmable line and feature keys

5

5

5

Integrated switch

10/100/1000BASE-T

10/100/1000BASE-T

10/100/1000BASE-T

PoE class

IEEE Power over Ethernet Class 2

IEEE Power over Ethernet Class 2

IEEE Power over Ethernet Class 2

Power input rating

0.917A, 48V DC

0.917A, 48V DC

0.917A, 48V DC

Key expansion module support

Not supported

Not supported

Not supported

CP-8841-K9 and CP-8811-K9 share five line keys, an 800 x 480 display, a gigabit switch and PoE Class 2, but CP-8841-K9 has a 24-bit color WVGA screen where CP-8811-K9 is grayscale, so the grayscale phone suits desks that only need voice. CP-8841-W-K9 is the white version of CP-8841-K9 with the same specifications, so that choice is shell color only. Neither CP-8841-K9 nor CP-8811-K9 supports a Key Expansion Module; a desk that needs extra line keys moves to CP-8851-K9, which takes up to two KEMs and expands 5 line keys to 61 or 66. A desk that needs 720p video moves to CP-8845-K9.

Ordering Checklist

  • Unified CM license: Add an Enhanced User Connect License for each CP-8841-K9 registering to Cisco UCM. Without it the phone cannot be added to Cisco UCM.
  • Power source: Use PoE Class 2 from the switch, or CP-PWR-CUBE-4= (CP-PWR-CUBE-4-S= with switch) plus one cord from CP-PWR-CORD-{AP,AR,AU,BZ,CE,CN,JP,NA,SW,UK}=. A non-PoE desk has no power, and Power Cube 4 ships without a country cord.
  • Wall mount, stand and bezel: Add CP-8800-WMK= for wall mounting, CP-8800-FS= for the foot stand, and CP-8800-B-BEZEL= (black) or CP-8800-S-BEZEL= (silver). These are separate spare-part PIDs and are not added by the phone order.

Product Front

The following table describes the Cisco IP Phone 8800 Series Buttons.

The Cisco IP Phone 8800 Series has two distinct hardware types:

  • Cisco IP Phones 8811, 8841, 8851, 8851NR, and 8861—do not have a camera.
  • Cisco IP Phones 8845, 8865, and 8865NR—have a built-in camera.

1

Incoming call or voicemail indicator

2

Camera (Cisco IP Phone 8845 and 8865)

3

Feature and session buttons

4

Softkeys

5

Back, Navigation cluster, and Release

6

Hold, Transfer, and Conference

7

Headset, Speakerphone, and Mute

8

Voicemail, Applications, and Directory

9

Volume

Specifications

Parameter Specification Parameter Specification
Product ID CP-8841-K9 Cisco ordering ID CP-8841-K9=
Product type Cisco IP Phone 8841 desk phone Color Charcoal
Color comparison SKU CP-8841-W-K9= is Cisco IP Phone 8841, White Display comparison SKU CP-8811-K9= is Cisco IP Phone 8811, Charcoal
Programmable keys 5 Display 5 in. 800 x 480 24-bit color WVGA display
Ethernet switch 10/100/1000BASE-T with two-port Cisco Ethernet switch PC connectivity Single LAN connection for phone and co-located PC
PoE class IEEE Power over Ethernet Class 2 PoE standards Compatible with IEEE 802.3af and 802.3at switch blades
Power input rating 0.917A, 48V DC Local power option Cisco IP Phone Power Cube 4 for non-PoE deployments
CUCM support Cisco Unified Communications Manager 12.5 and later Unified CME support 10.0 and later through fast track
BE 6000 support 8.6.2, 9.1.2, 10.5.2, 11.0 and later HCS support 8.6.2 and later using supported UCM versions
CUCM license Enhanced User Connect License Signaling protocol Session Initiation Protocol
Codec support G.711, G.722, G.722.2, G.729ab, iLBC, iSAC, OPUS QoS 802.1Q/p
Discovery protocols Cisco Discovery Protocol, LLDP-MED Switch speed Auto-negotiation
Handset Wideband-capable RJ-9 handset Analog headset Wideband-capable RJ-9 audio port
AUX port Electronic hookswitch control with a third-party headset Speakerphone Full-duplex speakerphone
Foot-stand positions 35 degrees and 50 degrees Wall mounting Optional wall-mount kit available separately
Dimensions 9.02 x 10.13 x 1.57 in. excluding foot stand Weight 2.58 lb with handset
Operating temperature 0°C to 40°C (32°F to 104°F) Operating humidity 10% to 90%, noncondensing
Phone casing composition Polycarbonate ABS textured plastic Security slot Kensington Security Slot compatible

Quality Certifications

Customer Reviews

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    Wayne Baker
    Posted on 26/03/2026
    Verified Buyer
    5.0

    Vendor lock-in usually concerns me. With Layer23 I’m happy to be locked in.

    Christopher Thomas
    Posted on 29/12/2025
    Verified Buyer
    4.0

    The manufacturer’s QR code scanned correctly to the official registry.

    Juan Zhang
    Posted on 24/12/2025
    Verified Buyer
    5.0

    Layer23 has earned a recurring spot in our quarterly purchasing.

    Jerry
    Posted on 15/08/2024
    Verified Buyer
    5.0

    Works great! Buttons are nice and clicky. Cobbler approves!

    Network Admin
    Posted on 25/04/2024
    Verified Buyer
    5.0

    Solid mid-range phone. Color screen but no video. Perfect for our agents.

Questions & Answers

  • Which call platforms does CP-8841-K9 register to?

    CP-8841-K9 registers to Cisco Unified Communications Manager 12.5 and later, and every phone needs an Enhanced User Connect License. Signaling uses Session Initiation Protocol, and Cisco Hosted Collaboration Solution 8.6.2 and later is also listed.
  • What PoE class does CP-8841-K9 need, and what powers it without PoE?

    CP-8841-K9 draws IEEE Power over Ethernet Class 2 from the switch port, with a 0.917A, 48V DC input rating. A desk without PoE uses Cisco IP Phone Power Cube 4, CP-PWR-CUBE-4= (CP-PWR-CUBE-4-S= with switch), plus a country power cord, because the cube ships without one.
  • Can CP-8841-K9 register to Cisco Unified Communications Manager Express?

    Yes. CP-8841-K9 is listed for Cisco Unified Communications Manager Express from CME 10.0 (IOS load 15.3(3)M). SRST fallback is listed from version 8.0 (IOS load 15.1(1)T), per the Cisco IP Phone 8800 Series firmware release notes for 14.3 and 14.4. Check the branch router image against both before deploying.
  • Which firmware file installs release 14.4(1)SR1 on CP-8841-K9?

    Use cmterm-88xx-sip.14-4-1-0101-153.k4.cop.sha512 as a COP file, or copy cmterm-88xx.14-4-1-0101-153.zip to the TFTP server by hand. Per the 14.3 and 14.4 release notes, Unified CM must first run an up-to-date device package, otherwise the firmware may not work correctly. Load the file on the server before the phones reset.
  • Which spare handset and handset cord PIDs fit CP-8841-K9?

    The datasheet lists CP-DX-HS= and CP-DX-W-HS= as spare handsets, and CP-DX-CORD= and CP-DX-W-CORD= as handset cords, in charcoal and white. Match the color of the phone when ordering so the handset and cord look the same on the desk.
  • Which PoE standards and discovery protocols does CP-8841-K9 use for power?

    CP-8841-K9 accepts IEEE 802.3af or 802.3at power at Class 2. It negotiates power through CDP and LLDP-PoE, per the 8841 datasheet, so the switch port needs one of those protocols enabled. Check this when a port is configured for static power, because the phone then reports a class the switch must accept.
  • What operating temperature and weight does CP-8841-K9 specify?

    CP-8841-K9 operates from 0 to 40°C. It weighs 1.17 kg with the handset and measures 229.1 x 257.34 x 40 mm, per the 8841 datasheet. Use those figures for desk-space and wall-mounting planning, and keep the phone out of rooms that leave the temperature range.

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DataSheet Downloads

  • CP-8841-K9 Datasheet