Overview
Overview of Cisco Desk Phone 9851 VoIP Phone with Trusted Platform Module (TPM) 2.0 (DP-9851-L-K9) | New
The Cisco Desk Phone 9851 (DP-9851-L-K9) with Trusted Platform Module (TPM) 2.0 is a feature-rich, safe corporate VoIP phone made to provide outstanding audio quality, cutting-edge security and contemporary connection for today's workplaces. The 9851 has a bright 3.7-inch color screen, two Gigabit Ethernet connections with PoE Class 3 compatibility, six programmable line keys, USB-A and USB-C interfaces and a smooth integration with Webex Calling and Cisco Unified Communications Manager. Embedded TPM 2.0, FIPS compliance and end-to-end encryption for all communications guarantee strong security. It is perfect for executive offices, knowledge workers and collaborative spaces looking for a future-ready communications experience with unwavering privacy because of its elegant, ergonomic form and simple controls.
Key Features of Cisco Desk Phone 9851
• 3.7-inch Color LCD Display (480 x 240 px) with backlit, intuitive interface for easy navigation and crisp call handling.
• Six Programmable Line Keys with configure speed dials, direct lines or call features for streamlined multitasking.
• Trusted Platform Module (TPM) 2.0 with enhanced hardware-based security for robust device authentication, encryption and FIPS 140-2/3 compliance.
• USB-A and USB-C Ports with integrate headsets, storage and firmware updates for greater flexibility.
• Dual Gigabit Ethernet Portswith PoE that efficiently connect phone and a colocated PC to your network with PoE Class 3 support for simplified cabling.
• Cisco Smart Audio Technologies with wideband audio, echo cancellation, background noise removal and acoustic shock protection ensure crystal-clear calls.
• Comprehensive Codec Support with Opus, G.722, G.711, G.729, iLBC and more for high-definition voice across all environments.
• Customizable Function Keys with dedicated keys for hold, transfer, conference, directory, speakerphone, mute and headset control.
• Modern Security Protocols with secure boot, TLS/SRTP encrypted signaling and media, device authentication and security-enhanced Linux operation.
• Modern, Ergonomic Design with compact footprint, easy-to-read display and user-friendly controls.
Benefits of Cisco Desk Phone 9851
🗹 Protect sensitive communications with TPM 2.0, encrypted media and signaling and compliance with leading security standards.
🗹 Wideband audio, advanced echo cancellation and smart background noise suppression optimize conversation clarity.
🗹 USB-A/USB-C and dual Ethernet ensure seamless compatibility with a wide range of workstyles and peripherals.
🗹 PoE and VLAN tagging streamline installation and management within modern enterprise networks.
🗹 Programmable keys and intuitive interface help users multitask, access contacts and manage calls with minimal effort.
🗹 Designed for compatibility with Cisco’s latest cloud, on-prem and hybrid solutions, supporting evolving workplace needs.
🗹 Matches premium office aesthetics, enhancing reception areas, executive desks and collaborative environments.
Specifications
Specifications for Cisco Desk Phone 9851 VoIP Phone with Trusted Platform Module (TPM) 2.0 (DP-9851-L-K9) | New
Manufacturer | Cisco |
Manufacturer Part Number | DP-9851-L-K9 |
Product Name | Cisco Desk Phone 9851 VoIP Phone with Trusted Platform Module (TPM) 2.0 |
Product Type | VoIP Phone |
Compatible Platforms | Cisco BroadWorks, Cisco Webex Calling, Cisco Webex Dedicate Instance (DI), Asterisk |
Integrated Components | Trusted Platform Module (TPM) 2.0 |
Weight | 34.14 oz |
Body Color | First Light |
Body Material | ABS polycarbonate, 74% post-consumer recycled plastic |
Wireless Interface Provided | NFC |
Call Services | Voice Mail, Caller ID, Call Waiting, Call Hold, Call Transfer, Call Forwarding, Call park/pickup |
Caller ID Type | Caller ID/call waiting |
Dialer Location | Base |
Conference Call Capability | Yes |
Speakerphone | Yes |
Programmable Buttons Qty | 6 |
Volume Control | Yes |
Indicators | Speakerphone indicator, headset, mute indicator, calendar indicator, select indicator, line status indicator, status, busy lamp field (BLF) |
Additional Functions | One button to join (OBTJ), QR code access, conference mode, mute, Music on hold, Do not disturb, call recording, sleep mode, Kensington security slot |
Main Features | Integrated Ethernet switch |
VoIP | Yes |
VoIP Protocols | SIP, SDP, RTCP, RTP, SRTP |
Voice Codecs | Opus, G.722, G.722.2, iSAC, G.711a-law, G.711μ-law, G.729a, G.729b, iLBC |
Lines Supported | 46 lines |
Quality of Service | IEEE 802.1Q (VLAN) |
IP Address Assignment | DHCP, static |
Security | IEEE 802.1X, EAP-FAST, EAP-TLS, FIPS 140-2, TLS 1.3, SRTP |
Power Over Ethernet (PoE) Support | Yes |
Network Protocols | IPv4, IPv6, DHCP, GARP, DNS, TFTP, HTTPS, VLAN, RTP, RTCP, Cisco Discovery Protocol (CDP), Link Layer Discovery Protocol (LLDP), Link Layer Discovery Protocol - Media Endpoint Discovery (LLDP-MED) |
Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX/1000Base-T |
Compatible Software | Cisco WebEx, Cisco Unified Communications Manager |
Voice Features | Acoustic echo cancellation (AEC), forward error correction (FEC), automatic gain control (AGC), comfort noise generation (CNG), voice activity detection (VAD), packet loss concealment (PLC), silence suppression, acoustic shock protection, adaptive jitter buffer (AJB), dual tone multi-frequency (DTMF), HD audio, ultrasonic support |
Network Features | Class 3 PoE |
Type | LCD display - color |
Display Location | Base |
Diagonal Size | 3.7" |
Display Resolution | 240 x 480 pixels |
Backlit | Yes |
Display Languages | Brazilian Portuguese, Catalan, Czech, Danish, Dutch, Finnish, French, French Canadian, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish, Turkish, Ukrainian, Chinese (simplified), Chinese (traditional), Chinese (Traditional, Hong Kong), Spanish (Columbia), UK English, US English |
Connections | Headset jack / RJ-9 ¦ 2 x network / RJ-45 ¦ USB / 4 pin USB Type A ¦ USB Type-C / 24 pin USB-C |
Hearing Aid Compatible | Yes |
Placing / Mounting | Desktop |
Cables Included | Network cable |
ENERGY STAR Certified | Yes |
Power Consumption | 2.82 W (power adapter, display off mode), 2.69 W (PoE, display off mode), 0.24 W (power adapter, deep sleep mode), 0.69 W (PoE, deep sleep mode) |
Width | 8.9 in |
Depth | 8.4 in |
Height | 1.9 in |
Weight | 34.14 oz |