DP-9800-KEM – 40 Programmable Keys – 5-Inch Color LCD – 9800 Series Phone Expansion Module

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DP-9800-KEM Description

The DP-9800-KEM is a Cisco Desk Phone 9800 Series key expansion module that adds programmable line, speed-dial and feature keys beside a compatible desk phone. The module has a 5-inch backlit color LCD at 480 x 800 with 20 physical keys across 2 pages, which gives 40 programmable positions, and it measures 226.0 x 126.0 x 48.5 mm at 483 g. The module has no power supply of its own and draws power from the host phone over USB-A, and it does not work with the DP-9811-K9 or DP-9841-K9.

Quick Specs

Product ID

DP-9800-KEM

Display

5-inch backlit color LCD, 480 x 800

Programmable keys

20 physical keys across 2 pages, 40 positions

Compatible phones

DP-9851-K9, DP-9861-K9, DP-9871-K9

Modules per phone

1 on PoE Class 3; up to 3 on DP-9861-K9 and DP-9871-K9 with Cisco Power Adapter 3

Power input

Fed by the host phone over USB-A; no dedicated power supply

Wall mounting

DP-9800-KEM-WMK= wall mount kit

Application Scenarios

Reception Attendant Console

At a lobby or front desk, the operator maps frequently dialed extensions across the module’s 40 key positions beside a DP-9851-K9 or DP-9861-K9 to answer, screen and transfer calls for the whole office.

Executive Assistant Desk

On an assistant’s desk, the module gives each manager’s shared line its own labeled key next to a DP-9871-K9, so line status stays visible without paging through the phone screen.

Wall-Mounted Nursing Station

At a ward or clinical station with no free desk surface, the module mounts beside a wall-mounted phone with its own wall mount kit and gives staff keys for several departments.

Selection Guide

DP-9800-KEM attaches to DP-9851-K9, which takes one module, and to DP-9861-K9 and DP-9871-K9, which take one module on PoE Class 3 or up to three on Cisco Power Adapter 3. Desks with DP-9811-K9 or DP-9841-K9 cannot use it and need a host change to one of those three phones. A desk that needs more than 40 key positions requires DP-9861-K9 or DP-9871-K9 on local power.

Ordering Checklist

  • Host phone: Pair the module with DP-9851-K9 (1 module), DP-9861-K9 or DP-9871-K9 (1 on PoE Class 3, up to 3 on Cisco Power Adapter 3). DP-9811-K9 and DP-9841-K9 do not support the module, and it draws power from the host phone.
  • Local power for 3 modules: Add Cisco Power Adapter 3 in the regional PID, such as CP-PWR-ADPT-3-NA= or CP-PWR-ADPT-3-EU=, on DP-9861-K9 or DP-9871-K9 hosts. Without the adapter the host phone limits the desk to 1 module.
  • Wall mount: Add DP-9800-KEM-WMK= for a module beside a wall-mounted phone; the module has its own wall mount kit, separate from the phone kit.

Specifications

Parameter Specification Parameter Specification
Product ID DP-9800-KEM Cisco ordering ID DP-9800-KEM=
Color Carbon Black Display 5-inch color LCD, backlit
Display resolution 480 x 800 Physical keys 20, with page toggle key
Key pages 2 Programmable positions 40
Compatible phones DP-9851-K9, DP-9861-K9, DP-9871-K9 Modules on DP-9851-K9 1, on PoE Class 3 or Cisco Power Adapter 3
Modules on DP-9861-K9 / DP-9871-K9 1 on PoE Class 3; up to 3 with Cisco Power Adapter 3 Power input From the host phone over USB-A; no dedicated power supply
Downstream USB-A output 0.75W on PoE hosts; 2.5W on a locally powered DP-9851-K9; 5W on a locally powered DP-9861-K9 or DP-9871-K9; 0.75W in three-module chains Wall mount kit DP-9800-KEM-WMK=
Dimensions 226.0 x 126.0 x 48.5 mm Weight 483 g
Operating temperature 0 to 40°C Operating humidity 10 to 90%, noncondensing
Unit package 25.4 x 17.3 x 8.13 cm; 0.71 kg

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    Emily W.
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    clear communication from start to finish

    William Thompson
    Posted on 18/06/2026
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    5.0

    correct part. much better than list. first time ordering here and the site made it simple.

    D P.
    Posted on 03/06/2026
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    4.0

    fair pricing and no surprises.

    Rafael W.
    Posted on 01/06/2026
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    5.0

    well packaged, good price

    Clint W.
    Posted on 29/05/2026
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    fast delivery

Questions & Answers

  • What is DP-9800-KEM used for?

    DP-9800-KEM is a key expansion module for compatible Cisco Desk Phone 9800 Series phones, adding programmable line, speed-dial, and feature positions. Its Carbon Black sidecar format places labeled keys beside the host phone.
  • How many programmable positions does DP-9800-KEM provide?

    DP-9800-KEM provides 20 physical keys across 2 pages for 40 programmable positions. A page toggle changes the labels shown on its 5-inch color LCD at 480 x 800.
  • Which desk phones are compatible with DP-9800-KEM?

    DP-9800-KEM attaches to DP-9851-K9, DP-9861-K9, and DP-9871-K9. DP-9811-K9 and DP-9841-K9 do not accept the expansion module, so those phones cannot host the sidecar.
  • Can DP-9800-KEM deliver 5W to a downstream USB device when its host uses PoE?

    No, DP-9800-KEM provides 0.75W from its downstream USB-A port when the host phone uses PoE. The 5W output applies only to a locally powered DP-9861-K9 or DP-9871-K9, not to a host phone receiving power through PoE.
  • How does host power affect the DP-9800-KEM module count?

    DP-9800-KEM is limited to 1 module when the host uses PoE Class 3. DP-9861-K9 and DP-9871-K9 can run up to 3 modules when powered by Cisco Power Adapter 3, while DP-9851-K9 remains limited to 1.
  • Where does DP-9800-KEM receive operating power?

    DP-9800-KEM receives power from the host phone over USB-A and has no dedicated power supply. The phone's PoE or Cisco Power Adapter 3 arrangement therefore determines the supported module chain.
  • Which wall-mount hardware fits DP-9800-KEM?

    DP-9800-KEM uses DP-9800-KEM-WMK= when the sidecar is installed beside a wall-mounted phone. The phone wall mount kit does not carry the expansion module, so both mounting roles must be covered separately.
  • When is DP-9800-KEM the wrong desk-phone accessory?

    DP-9800-KEM is the wrong accessory when the phone already provides enough programmable positions or when a desk expects multiple modules on DP-9851-K9, which supports only one. Roles needing 80 or 120 positions require DP-9861-K9 or DP-9871-K9 with Cisco Power Adapter 3.

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