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Cisco 9841 IP desk phone, dark finish, 3.5" LCD screen, four line keys

Cisco Systems, Inc.

Cisco Systems, Inc. DP-9841-K9= 9841 IP Phone 4 Line 3.5" LCD

SKU CH-GYA0-X4VBK MPN DP-9841-K9=

Corded VoIP desk phone with four lines, a 3.5" LCD and dual PoE network ports for power and data over one cable

  • Additional FeaturesTechnical Information Base Unit Connectivity Technology: Cor
  • VoIP technology reduces call costs over the Internet
  • 4 programmable lines handle multiple simultaneous conversations
  • 5" LCD display shows caller details clearly
  • PoE support delivers power and data through one cable
  • PhoneOS software unifies calling, meetings and desk reservations

Cisco 9841 IP Phone — 4-line VoIP desk phone

The Cisco 9841 IP Phone is a corded VoIP desk phone built for modern office environments. It delivers secure enterprise calling, meetings and desk reservations in a single device. The phone runs PhoneOS software for a simplified user experience across desk and meeting-room workflows. It supports Cisco Unified Communications Manager, Webex Calling, BroadWorks and third-party cloud platforms.

Power and connectivity — single-cable PoE deployment

Electrical power and data travel over one Ethernet cable through the two RJ-45 network ports, removing the need for a separate power adapter. The corded base unit ensures a stable connection without wireless interference. This PoE design simplifies installation in lobbies, guest rooms and conference halls. Network infrastructure handles both power delivery and voice traffic simultaneously.

Four programmable lines for multi-call handling

The phone provides four total lines, allowing users to manage multiple concurrent calls or shared appearances. Each line can be configured for different directories, call parks or feature keys. This line count suits knowledge workers, receptionists and hot-desking scenarios. Buyers needing more than four simultaneous line appearances should consider other models.

Highlights

  • VoIP technology reduces call costs over the Internet
  • 4 programmable lines handle multiple simultaneous conversations
  • 5" LCD display shows caller details clearly
  • PoE support delivers power and data through one cable
  • PhoneOS software unifies calling, meetings and desk reservations

Specifications

BrandCisco Systems, Inc
Model9841 IP Phone
Part NumberDP-9841-K9=
Additional FeaturesTechnical Information
Base Unit Connectivity Technology:
Corded
IP Phone Technology:
VoIP
Total Number of Phone Lines:
4
Caller ID:
Yes
Speakerphone:
Yes
Display & Graphics
Screen Type:
LCD
Screen Size:
3.5"
Interfaces/Ports
Network (RJ-45):
Yes
Number of Network (RJ-45) Ports:
2
USB:
Yes
PoE (RJ-45) Port:
Yes
Physical Characteristics
Color Family:
Black
Product Color:
Carbon Black
Form Factor:
Desktop
Height:
8.4"
Width:
8.4"
Depth:
1.9"
Weight (Approximate):
2.10 lb
Miscellaneous
Energy Star:
Yes
Shipping weight13.61 kg
Package size315 × 246 × 79 mm

Questions about this item

How do I install the Cisco 9841 IP Phone and which step is often missed?

Connect the corded handset, then plug one RJ-45 cable into the network port and the other into the PoE port; the step often missed is using the PoE port so the phone powers up without a separate adapter.

What maintenance or replacement will the Cisco 9841 IP Phone need later?

The 3.5" LCD screen and keypad may need cleaning; the handset cord can wear and should be replaced if audio quality drops.

What limit appears first on the Cisco 9841 IP Phone during sustained use?

The four-line capacity is the first limit; once all four lines are active, additional calls cannot be handled until a line frees up.

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