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Cisco Desk Phone 9851 carbon black desktop handset 3.7 inch LCD six line keys

Cisco Systems, Inc.

Cisco Systems, Inc. DP-9851-K9= Desk Phone 9800 Series 3.7" LCD 6 Lines

SKU CH-C7H9-SDJ05 MPN DP-9851-K9=

VoIP desk phone with a 3.7" LCD, six lines, speakerphone and PoE power

  • Additional FeaturesTechnical Information Handset Connectivity Technology: Corde
  • 7" LCD display shows caller details clearly
  • Six programmable lines handle multiple calls simultaneously
  • VoIP technology routes voice over the network
  • PoE ports deliver power and data through one cable
  • PhoneOS software unifies calling, meetings and desk reservations

Cisco Desk Phone 9800 Series 9851

The Cisco DP-9851 is a corded VoIP desk phone with a 3.7 inch LCD and six programmable lines. It suits office workers who need a single device for calling, meetings and desk reservations across multiple cloud platforms.

Check PoE and call platform before ordering

Verify that your network switch provides Power over Ethernet because the phone draws power through its two RJ-45 ports. Confirm that your call control system supports Cisco Unified Communications Manager, Webex Calling, Broadworks or compatible third-party SIP platforms.

Ideal for unified workspaces, not for analogue lines

This phone fits organisations consolidating desk hardware into one secure endpoint for hybrid work. Buyers who need analogue or ISDN connectivity, or who require a colour touchscreen, should look at alternative models.

Highlights

  • 7" LCD display shows caller details clearly
  • Six programmable lines handle multiple calls simultaneously
  • VoIP technology routes voice over the network
  • PoE ports deliver power and data through one cable
  • PhoneOS software unifies calling, meetings and desk reservations

Specifications

BrandCisco Systems, Inc
ModelDP-9851 IP Phone
Part NumberDP-9851
Additional FeaturesTechnical Information
Handset Connectivity Technology:
Corded
Base Unit Connectivity Technology:
Corded
IP Phone Technology:
VoIP
Total Number of Phone Lines:
6
Speakerphone:
Yes
Display & Graphics
Screen Type:
LCD
Screen Size:
3.7"
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:
1.9"
Width:
8.4"
Depth:
8.9"
Weight (Approximate):
2.13 lb
Miscellaneous
Energy Star:
Yes
Shipping weight1.36 kg
Package size315 × 246 × 79 mm

Questions about this item

Does the DP-9851-K9= include a power supply or must I buy one separately?

The phone has two PoE network ports so it can receive power and data over a single Ethernet cable; no separate power supply is required.

How do I decide between the 9800 series models when they all share the same PhoneOS software?

Choose the 9851 for its 3.7 inch LCD and six-line capacity; other 9800 models differ in screen size and line count.

What does the six-line specification mean for daily call handling?

It allows six simultaneous call appearances so you can manage multiple conversations, hold lines, or shared extensions without additional hardware.

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