Cisco Refresh DP-9841-K9 VoIP IP Desk Phone 4-Line Gigabit SIP PoE HD Audio

About this item

Cisco 9841 IP Desk Phone DP-9841-K9 - 4-Line Gigabit SIP VoIP Carbon Black - Refresh The Cisco 9841 IP Desk Phone (DP-9841-K9) is a 4-line Gigabit SIP VoIP desk phone running Cisco PhoneOS , built for hybrid work, hot-desks, and enterprise call-center deployments. This Cisco Refresh unit is factory-remanufactured by Cisco and certified to new-product performance standards. It features a 3.5-inch backlit grayscale LCD (384x160) , Cisco HD wideband audio , a full-duplex speakerphone , and dual Gigabit Ethernet ports . One device registers with Cisco Unified Communications Manager (CUCM) , Webex Calling , Webex Dedicated Instance , BroadWorks , or Asterisk — all interoperability-tested and certified by Cisco. Cisco 9841 IP Desk Phone - Key Features & Benefits 4 Physical Line Keys — 4 Programmable Line Appearances: The 9841 has 4 physical line keys and supports a maximum of 4 programmable line keys on this device . Your calling platform may support additional SIP identities (up to 16 on Webex Calling / Open SIP), but the phone itself displays and rings on its 4 physical keys Cisco HD Wideband Audio with AI Noise Removal (Sending Side): Per Cisco's 9800 Series Data Sheet, the 9841 includes conventional and AI-based background noise removal on the sending side , plus a full-duplex speakerphone with DTMF tone masking and a bass-enhancing acoustic enclosure for more natural-sounding voices 3.5-inch Backlit Grayscale LCD — 384x160 Resolution: Sharp, easy-to-read display with a dedicated Action button , Favorite button , and Front-arc / Top status LEDs for message waiting, missed-call, and hot-desk availability Dual Gigabit Ethernet (10/100/1000BASE-T): Integrated 2-port Ethernet switch with PC passthrough; supports separate voice and data VLANs (IEEE 802.1Q) for secure deployment Power over Ethernet (IEEE 802.3af Class 2): Class 2 PoE on the 9841 (compatible with both 802.3af and 802.3at switches); optional Cisco Power Adapter 3 available for non-PoE deployments (sold separately) USB-A Port for Plug-and-Play Headsets: Side-mounted USB-A (0.25A / 1.25W under PoE) supports USB wired headsets; an additional Auxiliary port is for Cisco console log collection only Government-Grade Security — TPM 2.0, TLS 1.3, SRTP, FIPS 140-2: Trusted Platform Module (TPM) 2.0 , Secure Boot , SIP OAuth , signed firmware, and end-to-end encrypted media via SRTP ; FIPS 140-2 and UCR 2013 compliant per Cisco data sheet Cisco 9841 IP Desk Phone - Technical Specifications Manufacturer: Cisco Part Number: DP-9841-K9 Product Type: 4-Line Gigabit SIP VoIP Desk Phone • Color: Carbon Black Display: 3.5-inch backlit grayscale LCD, 384x160 resolution Physical Line Keys: 4 • Max programmable line keys on device: 4 Audio Codecs: OPUS, G.722, G.722.2, iSAC, G.711 (a-law/µ-law), G.729a/b, iLBC Audio Features: Cisco HD audio (TIA-810/920 compliant), full-duplex speakerphone, AI noise removal (sending side), HAC handset, AEC, AGC, CNG, VAD, PLC Speakerphone Frequency Response: 100 Hz – 20 kHz (handsfree) Network Ports: 2x RJ45 10/100/1000BASE-T (LAN + PC passthrough, IEEE 802.3i/802.3u/802.3ab) Other Ports: 1x USB-A (headset) • 1x RJ-9 (handset) • 1x Auxiliary (Cisco console log only) Power: IEEE 802.3af PoE Class 2 (802.3at compatible) • Input 0.42A, 48V DC • Optional Cisco Power Adapter 3 Network Protocols: SIP, SDP, RTP/RTCP, IPv4/IPv6, CDP, LLDP, LLDP-MED, DHCP, DNS, HTTPS, TFTP, 802.1X (EAP-FAST / EAP-TLS) Security: TPM 2.0, TLS 1.3, SRTP, Secure Boot, SIP OAuth, FIPS 140-2 compliant, UCR 2013 compliant Platform Support (Cisco-certified): Cisco UCM, Webex Calling, Webex Dedicated Instance, BroadWorks, Asterisk Dimensions (H×W×D): 8.43 x 8.43 x 1.94 in. (214 x 214 x 49.4 mm) Weight: 954 g (2.1 lbs) Operating Temperature: 32°F to 104°F (0°C to 40°C) Mounting: Desktop footstand • Optional wall mount kit DP-9800-WMK= (sold separately) Sustainability: 74% post-consumer recycled plastic • ENERGY STAR

• Phone Lines: 4
• VoIP Protocols: SIP, RTCP, RTP, SRTP, SDP
• MPN: DP-9841-K9-RF
• Year Manufactured: 2024
• Conference Call Capability: Yes
• Depth: 8.4 in
• Power Over Ethernet (PoE) Support: Yes
• Unit Type: Unit
• Features: Bluetooth, Power Over Ethernet (PoE), Speakerphone, Wideband Audio, Integrated Ethernet switch, CNG, VAD, AEC, PLC, Silence suppression, HD audio, RJ-45
• Height: 1.9 in

Specifications

MPN

DP-9841-K9-RF

Type

Corded Telephone

VoIP

Yes

Brand

Cisco

Color

Black

Depth

8.4 in

Model

Cisco 9841 IP Desk Phone

Width

8.4 in

Height

1.9 in

Backlit

Yes

Features

Bluetooth, Power Over Ethernet (PoE), Speakerphone, Wideband Audio, Integrated Ethernet switch, CNG, VAD, AEC, PLC, Silence suppression, HD audio, RJ-45

Interface

Ethernet (RJ-45)

Unit Type

Unit

Phone Lines

4

Diagonal Size

3.5"

Unit Quantity

1

VoIP Protocols

SIP, RTCP, RTP, SRTP, SDP

Display Location

Base

Network Features

Class 2 PoE

Country of Origin

China