Cisco 9851 Desk Phone (DP-9851-K9)

The Cisco 9851 Desk Phone (DP-9851-K9) is a feature-rich business communications solution designed for professionals who require enhanced visibility, advanced audio capabilities, and efficient call management. Featuring a vibrant 3.7-inch color display, support for up to 46 programmable line keys, AI-powered noise removal, and Cisco HD Audio, the Cisco 9851 helps users stay productive in modern office and hybrid work environments.

Ideal for managers, administrative staff, receptionists, customer service teams, and professionals who regularly manage multiple calls, the Cisco 9851 combines performance, security, and usability in a modern desktop phone.

Features

3.7-inch color LCD display
480 x 240 resolution
Backlit color screen
6 physical line keys
Supports up to 46 programmable line keys
AI-powered noise removal
Cisco HD Audio
Full-duplex speakerphone
USB-A connectivity
USB-C connectivity
Action button
Calendar button
Favorite button
Advanced call management controls
Call forwarding
Do Not Disturb (DND)
Conference calling
Modern user interface
Enterprise-grade security
Secure Boot
SIP OAuth authentication
Professionally tested
Warranty included

Specifications

Manufacturer: Cisco
Model: 9851
Part Number: DP-9851-K9
Product Type: Desk Phone
Display Size: 3.7 Inches
Display Resolution: 480 x 240 Pixels
Display Type: Backlit Color LCD
Physical Line Keys: 6
Maximum Programmable Line Keys: 46
Audio:
- Cisco HD Audio
- AI Noise Removal
- Full-Duplex Speakerphone
USB Ports:
- 1 x USB-A Port
- 5V / 0.5A Under PoE
- 1 x USB-C Port
- 5V / 0.5A Under PoE
Power:
- IEEE Power over Ethernet (PoE) Class 3
- Input Rating: 48V DC, 0.42A
Security:
- Secure Boot
- SIP OAuth Authentication
- Advanced Enterprise Security Features

Key Calling Features

Call Forward
Do Not Disturb
Conference Calling
Hold and Resume
Transfer
Favorites Access
Calendar Integration
Quick Action Controls

Compatibility

Compatible with supported Cisco collaboration and calling platforms.

Why Choose the Cisco 9851?

The Cisco 9851 is designed for users who require more functionality than entry-level desk phones. Its color display, expanded programmable key capacity, AI-enhanced audio technology, and dual USB connectivity make it ideal for professionals who manage multiple calls and require quick access to communications features.

For users who need even greater scalability, Cisco also offers the Cisco 9861 Desk Phone, featuring a larger 5-inch display, additional line keys, and support for up to 130 programmable line keys.

Professionally Tested

Each Cisco 9851 Desk Phone (DP-9851-K9) is professionally tested to help ensure reliable performance and compatibility with supported Cisco communications environments.

Package Includes

Cisco 9851 Desk Phone
1-Year Warranty

Related Products

Browse our selection of Cisco 9800 Series desk phones, replacement handsets, power accessories, headsets, conference phones, and business communications equipment.

Documentation

Need setup and operating instructions for the Cisco 9851 Desk Phone?

Download the User Guide for detailed information on installation, administration, configuration, and operation.

Download Cisco 9851 Datasheet (PDF)

Cisco 9851 Desk Phone (DP-9851-K9)