Cisco DP-9851-K9 IP Desk Phone 6-Line Gigabit PoE VoIP Business PhoneOS Webex

About this item

The Cisco DP-9851-K9 is a 6-line Gigabit VoIP desk phone built for office or hybrid work setups. It runs Cisco PhoneOS, so the same phone can be configured for CUCM, Webex Calling, BroadWorks, or Open SIP platforms. It comes with a 3.7-inch color LCD, dual Gigabit Ethernet ports, USB-A and USB-C connectivity, Cisco HD Voice with noise removal, and PoE power support. Security features include TPM 2.0, TLS 1.3, and SRTP encryption.

• 6-line Cisco Desk Phone 9851 (DP-9851-K9) running Cisco PhoneOS, works with CUCM, Webex Calling, BroadWorks, or Open SIP
• 3.7-inch color LCD (480x240) with 6 programmable line keys, tri-color LEDs, and 4 softkeys
• Dual Gigabit Ethernet ports (LAN + PC passthrough), plus USB-A and USB-C ports for headsets
• Cisco HD Voice with AI-based background noise removal, AEC, AGC, and full-duplex speakerphone
• Powered via PoE (IEEE 802.3 Class 3); supports SIP, SRTP, TLS 1.3, and TPM 2.0 security
• Color: Carbon Black, new unit, model year 2024

Specifications

MPN

DP-9851-K9

Type

VoIP Phone

VoIP

Yes

Brand

Cisco

Color

Black

Model

Cisco 9851

Features

Power Over Ethernet (PoE), Speakerphone, Wideband Audio

Interface

Ethernet (RJ-45), USB, USB-C

Unit Type

Unit

Phone Lines

6

Type Display

LCD display - color

Diagonal Size

3.7"

Unit Quantity

1

VoIP Protocols

SIP, RTCP, RTP, SRTP, SDP

Dialer Location

Base

Country of Origin

China

Network Ports Qty

2 x Ethernet 10Base-T/100Base-TX/1000Base-T

Year Manufactured

2024

Placing / Mounting

Desktop

Compatible Software

Cisco Webex, Cisco Unified Communications Manager, Open SIP/3PCC