Cisco DP-9861-K9 (Cisco Desk Phone 9861) Full English Datasheet

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Cisco DP-9861-K9 Desk Phone 9861 Mid-to-Upper Tier Enterprise Multiplatform IP Desk Phone, Built-In NFC Tag, Dual-Band Wi-Fi 802.11ac, Bluetooth 5.2, 10 Physical Backlit Tri-Color Line Keys, 5-inch 800×480 Backlit Static Color LCD Display, Unified Cisco PhoneOS Cross-Platform Triple Protocol Firmware (SCCP / SIP / H.323), Dual 10/100/1000 Gigabit Ethernet Integrated Switch, IEEE 802.3af Class 3 PoE Powered, Dual USB Interfaces (1×USB-A + 1×USB-C), TAA Trade Agreements Act Compliant Carbon Black Chassis, Supports Up To 3 Units of 9800 KEM Color Key Expansion Modules (External DC Power Supply Required for 2/3 KEMs), Native Triple Platform Support for CUCM SCCP, Webex Calling, BroadWorks Multiplatform SIP, Mid-Upper Tier Model of Cisco Modern 9800 Desk Phone Series, Designed for Department Managers, Executive Assistants, Medium-Volume Reception, Call Center Supervisors, Hybrid Hot-Desking Wireless Workspaces

Full Product Overview

The Cisco Desk Phone 9861, part number DP-9861-K9, is the mid-upper tier flagship wired enterprise IP desk phone within Cisco’s new-generation 9800 Series portfolio, built on the unified cross-platform Cisco PhoneOS operating system released in late 2025Cisco. Two hardware variants are available for the 9861 platform:

1. DP-9861-K9 (Standard Wireless/NFC Model): Equipped with integrated rewritable NFC tag, dual-band Wi-Fi 2.4G/5G, Bluetooth 5.2 radio hardware for wireless headset pairing and mobile provisioning.
2. DP-9861NR-K9 (NR = No Radio / No NFC): Removes NFC, Wi-Fi and Bluetooth radio modules entirely; all remaining core telephony hardware, ports, display, keypad, audio and firmware feature sets are identical to the standard DP-9861-K9 modelWebex.

Core Positioning & Hardware Tier Comparison

Major Upgrades over mid-high tier DP-9851-K9

1. 10 physical backlit tri-color line keys (9851 only 6 lines)supporting up to ten simultaneous extension registrations, expandable to 70 total programmable line keys via soft key paging and up to three external KEM expansion modules (9851 only supports single KEM panel)Cisco
2. Larger 5-inch backlit full-color static LCD screen (9851 uses smaller 3.7-inch color display) with higher 800×480 native resolution, full graphical UI rendering and custom PNG wallpaper supportCisco
3. Integrated dual-band Wi-Fi 802.11 a/b/g/n/ac (2.4GHz + 5GHz) wireless radio hardware (9851 has zero Wi-Fi capability)Cisco
4. Embedded Bluetooth 5.2 Class 1 wireless radio module supporting HFP/A2DP/PBAP/HID profiles for wireless headsets, mobile contact sync and peripheral pairing (9851 no Bluetooth hardware)Cisco
5. Onboard rewritable NFC tag for mobile zero-touch out-of-box provisioning via NFC-capable mobile devices or industrial NFC writers (9851 no NFC hardware)Webex
6. Supports up to three external 9800 Series Color Key Expansion Modules (KEM); the 9851 can only attach one KEM panel (2/3 KEM deployments require external DC power adapter, single KEM runs on PoE)Webex
7. Enhanced AI-powered dual-direction Background Noise Removal (BNR) on both transmit and receive audio streams (9851 only transmit-side AI noise suppression)Cisco
8. Expanded dual-band Wi-Fi enterprise security stack including WPA3 personal/enterprise and full EAP authentication suites (no wireless capability on 9851)

Limitations vs premium top-tier 9871 model

1. Static non-touch color LCD panel (9871 features 5-inch high-resolution 1280×720 Gorilla Glass touchscreen display)Cisco
2. No touchscreen multi-gesture input, no on-screen virtual dial pad (9871 touchscreen supports full on-screen line key control and virtual dialing)Webex
3. Physical hard line key array fixed at 10 dedicated buttons (9871 eliminates physical line keys entirely, all 32 lines managed via touchscreen soft keys)Webex

Primary Enterprise Deployment Use Cases

• Department managers, executive administrative assistants and team supervisors with heavy multi-line calling requirements (4–10 simultaneous extension registrations)
• Medium-volume reception desks, front-office attendant stations, hotel lobby guest service phones
• Call center supervisor primary workstations, multi-agent overflow backup stations
• Hybrid open-plan hot-desking workspaces requiring wireless Wi-Fi fallback connectivity and Bluetooth wireless headset support
• Mixed unified communications deployment environments: on-premises Cisco Unified Communications Manager (CUCM) SCCP, Cisco Webex Calling cloud UCaaS, BroadWorks third-party hosted SIP PBX platforms

Hardware & Physical Mechanical Specifications

Form Factor & Physical Construction

• Chassis Type: Compact fixed desktop desk phone with integrated analog handset, full backlit tactile hard key dial pad, single-position adjustable desktop foot stand, Kensington anti-theft lock slot on rear panel
• Casing Material: Matte charcoal grey TAA-compliant reinforced scratch-resistant ABS polycarbonate, 74% post-consumer recycled plastic, latex-free, RoHS compliant recyclable low-carbon construction materials
• Standard Unit Total Weight (Handset Included): 1095 grams (2.41 lb)Cisco
• Overall External Physical Dimensions (H × W × D, excluding desktop stand): 226 × 230 × 49.4 mm (8.9 × 9.0 × 1.9 inches)Cisco

Operating Environmental Parameters

• Working Ambient Temperature Range: 0°C to +40°C (32°F ~ 104°F)
• Nonoperating Storage Temperature Range: -10°C to +60°C (14°F ~ 140°F)
• Relative Humidity Tolerance: 10% – 90% non-condensing atmospheric humidity
• Maximum Operational Altitude: Up to 3000 meters above sea level

Global Compliance Certifications

ADA American Disabilities Act accessibility standards, MIL-STD-810G office drop-shock testing; full suite of global EMC/RF safety certifications including FCC Part 15 Class B, CE EMC 2014/30/EU, AS/NZS CISPR22, ICES-003, VCCI Class B; global electrical safety UL/CSA/EN/IEC 60950, 62368-1; telephony certifications FCC Part 68, TIA HAC hearing-aid compatibility, TIA-920 wideband HD voice standard; TAA Trade Agreements Act compliance certification; NFC tag wireless tag certification; Wi-Fi CERTIFIED dual-band radio certification; Bluetooth 5.2 radio certification; RoHS lead-free hazardous substance compliance.

Front Panel UI, Display & Hard Key Layout

5-inch Backlit Color Static LCD Display

• Screen Hardware Specs: 5-inch diagonal widescreen TFT LCD panel, native resolution 800 × 480, built-in white LED backlight illumination, auto ambient light sensor to dynamically adjust screen backlight brightness, fixed static non-touch panel with full-color graphical UI rendering, support for custom PNG wallpaper images (800×480 resolution)Webex
• Display Rendering Functions: Full-color enterprise caller ID with avatar support, synchronized LDAP corporate directory graphical search results, multi-page local call history archives, customizable home screen communication widgets (active call status, voicemail MWI alert graphical banners, Webex meeting reminder notifications, real-time calendar event previews)

Dedicated Physical Hard Key Control Panel

Lower front chassis fixed tactile backlit hard keys for core collaboration control operations:

1. 10 dedicated backlit tri-color physical line keys (left and right sides of LCD screen, 5 keys per bank) for direct line selection, BLF monitoring, speed dial and feature programmable shortcuts
2. Core universal call function dedicated shortcut keys: Hold / Resume, Transfer, Redial, Three-Way Conference
3. Unified vertical volume rocker switch: Single adjustment control for analog handset receiver audio, integrated internal desktop loudspeaker output volume, and incoming ringtone / meeting alert audio levels
4. 4-Way directional navigation pad with center Select confirmation button (up/down/left/right four-direction control)
5. Global Mute, Speakerphone Toggle, Headset Mode Toggle, End Call / Hang-Up dedicated hard keys
6. Full backlit 12-key numeric alphanumeric dial pad (0–9, *, #) for manual enterprise extension dialing, voicemail navigation, and free-form text input for enterprise applications
7. Dedicated Action Button (programmable custom user shortcut key for speed dial, feature activation, emergency service hotline, one-touch desk reservation)
8. Favorite dedicated hard key for one-touch quick access to user-saved frequent contacts and speed dial entries
9. Calendar dedicated hard key for instant Webex meeting calendar lookup and scheduled conference one-touch join
10. Directory dedicated hard key for one-touch LDAP corporate directory lookup access
11. Front Arc multi-state LED indicator strip + Top 360° full-ring status LED for global call, voicemail and desk hot-desking status alerts

Rear Panel Peripheral & Network Interfaces

1. Dual independent 10/100/1000BASE-T Gigabit Ethernet RJ45 integrated switch ports: Primary uplink port to corporate access switch; secondary PC passthrough port for direct laptop/desktop wired LAN connection
2. Dual USB peripheral ports: 1×USB 2.0 Type-A high-speed port + 1×USB-C port (supports certified USB enterprise headsets, USB keyboard/mouse input devices, low-power USB flash storage drives, mobile device charging)
3. DC Power Input Barrel Jack (optional external AC-DC power adapter, PoE primary power source supported; external power required when attaching 2 or 3 KEM expansion modules)
4. Modular coiled analog handset connection port
5. Kensington anti-theft security lock slot
6. Dedicated multi-KEM expansion module connection port for attaching up to three Cisco 9800 Series Color Key Expansion Modules (KEM)
7. Embedded NFC tag window (only standard DP-9861-K9 variant; DP-9861NR-K9 removes NFC hardware entirely)

• No HDMI input/output interfaces (9861 static display, no video output support)

Audio Subsystem, Voice Codec Support

Audio Hardware Components

1. Analog Handset Receiver: Wideband acoustic driver with adaptive background noise suppression, fully HAC hearing-aid compatible magnetic coupling design compliant with ADA accessibility requirements
2. Full-Duplex Integrated Desktop Loudspeaker: Omnidirectional single-element internal microphone matrix array paired with internal desktop loudspeaker driver; integrated hardware digital signal processing (DSP) featuring advanced Acoustic Echo Cancellation (AEC), Background Gain Normalization (BGN), Automatic Gain Control (AGC), AI-powered real-time dual-direction Background Noise Removal (BNR) for both transmit and receive audio streams, and acoustic shock protection for handset/headset audio safetyCisco

• Microphone frequency response range: 100 Hz – 20 kHz full wideband
• Speaker frequency response range: 70 Hz – 20 kHz full wideband

1. Audio I/O Connection Options
2. Standard modular coiled analog handset interface port
3. 3.5mm stereo audio jack for external headsets and auxiliary audio playback devices (EHS electronic hookswitch remote call answer/end control support)
4. Dual USB-A + USB-C ports for certified USB enterprise headset connection
5. Bluetooth 5.2 wireless radio hardware for Bluetooth headset pairing, mobile audio streaming and contact synchronization (DP-9861-K9 standard variant only)

Supported VoIP Wideband & Narrowband Audio Codecs (Unified Triple SCCP/SIP/H.323 Single-Image PhoneOS Firmware)

Wideband HD Voice Codecs: G.722 (16kHz sampling rate, TIA 920 wideband compliance), G.722.2, iSAC adaptive wideband compression codec, OPUS adaptive wideband codec, MPEG4 AAC-LD low-delay audio codec (64kbps / 128kbps bitrate variants) Narrowband Codecs: G.711 a-law, G.711 u-law, G.729a low-bitrate compression codec, G.729ab comfort noise optimized narrowband codec, iLBC narrowband voice codec

Audio Optimization Feature Suite

Voice Activity Detection (VAD), Comfort Noise Generation (CNG), silence suppression, adaptive full-duplex echo cancellation, intelligent packet loss concealment to eliminate audio stuttering over lossy wired/wireless enterprise network connections, active lip synchronization algorithm for natural real-time voice call audio sync, forward error correction (FEC) for media stream resilience, adaptive jitter buffer dynamic adjustment, acoustic shock protection for handset/headset audio safety, dual-direction AI background noise removal (transmit + receive).

Wired & Wireless Network Connectivity Specifications

Dual Gigabit Ethernet Integrated Switch

Two series-connected RJ45 Gigabit LAN ports:

1. Primary LAN Uplink Port: Connect to corporate enterprise access switch, fully compatible with IEEE 802.1Q VLAN tagging to isolate voice/media traffic between the 9861 phone and connected downstream PC
2. Secondary Downstream PC Passthrough Port: Enables direct wired LAN access for a desktop PC/laptop without requiring an additional wall Ethernet wall jack in executive office workspaces

Dual-Band Wi-Fi Wireless Radio (DP-9861-K9 Standard Variant Only)

• Wi-Fi CERTIFIED 802.11 a/b/g/n/ac dual-band radio (2.4 GHz ISM band + 5 GHz UNII band)Cisco
• Supported security modes: WPA-Personal / WPA2-Personal / WPA3-Personal, WPA-Enterprise / WPA2-Enterprise / WPA3-Enterprise
• Enterprise authentication protocols: EAP-FAST, PEAP-GTC, PEAP-MSCHAPv2, EAP-TLS
• Frequency bands:
  • 2.4GHz: 2412.0 – 2472.0 MHz
  • 5GHz: 5150.0 – 5250.0, 5250.0 – 5350.0, 5470.0 – 5725.0, 5745.0 – 5825.0 MHzCisco

Bluetooth 5.2 Wireless Radio (DP-9861-K9 Standard Variant Only)

• Bluetooth version: Bluetooth 5.2 Low Energy (BLE), Class 1 long-range radio, Enhanced Data Rate (EDR) supportCisco
• Supported Bluetooth application profiles:
  • HFP (Hands-Free Profile): Bluetooth wireless headset call control
  • A2DP (Advanced Audio Distribution Profile): Stereo audio streaming from paired mobile devices
  • PBAP (Phone Book Access Profile): Synchronize mobile contact lists to desk phone local directory
  • HID (Human Interface Device Profile): Pair Bluetooth keyboard/mouse peripherals for local text input
• Wideband/narrowband audio codec support for Bluetooth headset call media streams

NFC Tag Hardware (DP-9861-K9 Standard Variant Only)

• Rewritable passive NFC tag integrated on front chassis, supports mobile zero-touch out-of-box provisioning via NFC-capable smartphones or industrial NFC writer/reader hardware, stores preconfigured TFTP provisioning server address and device bootstrap parametersWebex

Supported Network Protocols & QoS Standards

• Layer 2 Discovery & Power Management: Cisco Discovery Protocol (CDP), LLDP-MED endpoint device discovery, LLDP-PoE power negotiation
• Traffic Prioritization & Segmentation: IEEE 802.1p Layer 2 CoS marking, IEEE 802.1Q tagged VLAN segmentation for voice/media traffic isolation from corporate data networks
• Signaling & Provisioning Protocols: TFTP zero-touch auto-provisioning for firmware, device configuration files, and enterprise application deployment; SCCP Skinny Client Control Protocol (native CUCM integration); SIP Session Initiation Protocol (third-party hosted PBX compatible); H.323 video conferencing signaling protocol
• NAT Traversal Mechanisms: STUN, TURN, ICE NAT traversal protocols for remote worker off-site SIP voice call connectivity across corporate firewalls and NAT gateways

Power Supply Architecture

Two independent power input modes for flexible corporate office switch infrastructure compatibility:

1. Primary Power Source: IEEE 802.3af Class 3 PoE power drawn from primary LAN uplink Ethernet port (48 VDC nominal input voltage). Class 3 PoE power budget fully supports continuous operation of backlit color LCD screen, internal loudspeaker/microphone array, dual USB-A/USB-C peripheral ports, built-in Wi-Fi/Bluetooth/NFC radio hardware and up to one external KEM expansion module simultaneously without auxiliary AC power adapters or performance throttling.
2. Secondary Backup Power Option: Optional external 48V DC wall-mount AC power cube adapter (accessory SKU CP-PWR-CUBE-3=), universal global mains input voltage range 100–240 VAC, 50 / 60 Hz alternating current for all regional worldwide office deployments. External DC power supply is mandatory when attaching two or three external 9800 KEM expansion modules to the phone chassis.

• Power Efficiency Compliance: Cisco EnergyWise intelligent power management framework full support; configurable automatic deep-sleep low-power idle mode activation during off-hours non-business periods to reduce corporate facility electrical energy consumption; ENERGY STAR certified low-power standby operation.

Core Telephony, PhoneOS Unified Communications & Global Enterprise Feature Set

The DP-9861-K9 runs a unified triple-protocol SCCP/SIP/H.323 PhoneOS telephony layer, supporting three distinct enterprise UC deployment architectures without firmware reflash required to switch operating modes:

1. SCCP Skinny Client Control Protocol: Native registration and full feature-compatible integration with on-premises Cisco Unified Communications Manager (CUCM) and CUCM Business Edition versions 12.5(1) and newer releases
2. MPP Multiplatform SIP Firmware: Cloud UCaaS hosted voice deployments including BroadWorks third-party service provider PBX platforms
3. Webex Calling Native SIP Cloud Service: Cisco Webex Calling cloud collaboration services native multi-platform SIP registration
4. H.323 Video Conferencing Protocol: Interoperability with Cisco TelePresence VCS on-premises multi-party video conference server infrastructure

All core device configuration parameters, wired/wireless LAN security VLAN profiles, LDAP corporate directory server addresses, XML enterprise workflow application definitions, and unified PhoneOS firmware images are automatically downloaded via TFTP zero-touch auto-provisioning workflows upon every power-on boot cycle, eliminating manual local device configuration setup by end users.

1. Multi-Line Multi-Call Enterprise Voice Telephony

Supports up to 10 independent directory number (DN) line registrations via dedicated physical backlit line keys, multi-call-per-line support allowing multiple concurrent active/incoming calls per line, native call waiting alert notifications for new inbound calls during active conversations. Full standard enterprise call handling functions: supervised consultative call transfer, blind unsupervised transfer, three-way ad-hoc audio conference calling, call hold/resume, one-touch global microphone mute, call park, directed / group call pickup, all-condition conditional call forwarding (unconditional / busy line / no-answer timeout), Do Not Disturb (DND) mode, full-color Caller ID name and number display for all ringing inbound calls, automatic last-number redial, pre-dial extension number editing before call initiation, intercom auto-answer for internal cross-department peer communications across multi-region global campus enterprise networks. Advanced supplementary telephony features include MLPP multilevel precedence and preemption priority call routing, barge / cbarge intrusive call monitoring, meet-me conference bridge support, malicious caller ID logging, fully customizable color LCD soft-key speed dial shortcut layout editor configurable by end users. Expandable to up to 70 total programmable line keys when attaching three external 9800 KEM expansion modules (each KEM adds 20 dedicated physical BLF line keys).

2. Unified Local & Network Directory, Call Log Productivity Tools

Dual synchronized contact directory architecture combining network cloud corporate directory and local persistent device storage:

1. Network LDAPv3 global enterprise employee directory servers, real-time multi-language wildcard search functionality accessible via the 5-inch full-color LCD display
2. Local on-device flash memory persistent storage for personal private address book entries, custom speed dial shortcuts, and permanent call history log archives

Three categorized persistent call log databases stored locally: all dialed outgoing audio calls, fully answered received inbound calls, missed unanswered ringing inbound calls. Each log entry stores complete Caller ID metadata, synchronized cross-campus precise call timestamps, full call duration metrics, with single-touch one-click callback functionality for every log entry. Local personal address book supports custom conference bridge access speed dial numbers, internal cross-region corporate extension contacts, reverse number lookup resolution for unknown anonymous inbound caller IDs. Bluetooth PBAP profile syncs paired mobile device contact lists to the phone’s local directory storage (DP-9861-K9 standard variant only).

3. Voicemail MWI (Message Waiting Indicator) Synchronization

Native SCCP/SIP MWI notification synchronization with Cisco Unity / Unity Connection voicemail servers and third-party hosted voice mail platforms for global multi-region campus enterprise deployments. Persistent visual MWI alert graphical banners permanently displayed on the 9861 main color LCD screen home dashboard, plus steady illuminated amber handset LED status indicator light to notify users of unlistened voicemail messages. Dedicated Messages application one-touch shortcut provides instant direct portal access for voicemail audio playback, message deletion management and personalized custom voicemail greeting recording and configuration.

4. User-Customizable Local Device Settings & Complete Accessibility Support

Multiple pre-configured user operation environment profiles allowing single-touch quick switching between custom ringtone sets, ring volume alert levels, notification tone schemes, LCD screen backlight auto-off timeout durations and audio volume presets optimized for different workplace environments (quiet private executive offices, noisy open-plan manufacturing floors, medium-traffic retail and reception workspaces). End users may independently adjust display contrast, system font size, screen wallpaper backgrounds, device security PIN keypad lock codes, LDAP corporate directory search filter preferences, Bluetooth device pairing/unpairing management (DP-9861-K9 standard variant only), Wi-Fi wireless network SSID connection profile editing (DP-9861-K9 standard variant only), USB peripheral power management, external auxiliary audio I/O gain adjustment, local audio DSP noise cancellation strength adjustment directly via the LCD graphical menu system without CUCM/PBX administrator privileges. Complete enterprise accessibility configuration menu suite including voice feedback screen navigation, adjustable audio pitch control, TTY/TDD teletype machine support, and HAC handset audio tuning optimization for hearing-impaired users.

5. XML Custom Enterprise Workflow Application Rendering

The 5-inch full-color capacitive LCD display fully renders custom XML enterprise web applications hosted on internal corporate global TFTP/HTTP/HTTPS servers. End users access real-time business operational data directly from the 9861 desktop IP phone without requiring separate laptop, PC or tablet hardware. Supported XML enterprise workflow use cases: cross-region hospital patient ward real-time status dashboards, manufacturing production line operation monitoring panels, multi-building campus emergency contact lists, cross-border company multi-language internal announcement feeds, multi-site conference bridge access code reference lists, healthcare patient care team cross-region contact directories, facility maintenance global work order tracking dashboards and real-time manufacturing multi-site production line status dashboards. Full Cisco Compatible Extensions (CCX) compliance guarantees standardized XML application interoperability across all Cisco global enterprise unified communications infrastructure deployments.

Centralized Remote Device Management & Global IT Administration Tools

1. Zero-Touch TFTP Auto-Provisioning & Remote Bulk Global Unified PhoneOS Firmware Upgrades Fully automated remote mass device configuration deployment and unified cross-platform single-image firmware upgrade management via standard TFTP/HTTP/HTTPS server infrastructure integrated with CUCM, Webex Calling and BroadWorks global PBX platforms. The DP-9861-K9 desktop IP phone automatically retrieves its unique device configuration file, wired LAN VLAN security profiles, LDAP multi-region corporate directory server addresses, XML enterprise workflow application definitions and latest unified PhoneOS firmware image on every power-on boot cycle, eliminating manual on-site IT technician configuration intervention for global enterprise device fleets spread across EMEA, APAC, Latin America and North America. One single universal unified firmware load natively supports both CUCM SCCP on-premises deployment mode and BroadWorks / Webex SIP cloud hosted PBX mode without separate firmware reflash operations required to switch UC deployment platforms.
2. Real-Time Global Device Status Monitoring & Call Session Audit Logging Comprehensive live real-time 9861 device status tracking accessible via the CUCM administrative management console or third-party BroadWorks SIP PBX global cloud management dashboards. Monitored real-time device metrics include: wired LAN online/offline registration state, active multi-line audio call session status, access point wired LAN switch port association information, PoE power draw consumption metric, installed unified PhoneOS firmware full version identifier, attached downstream PC passthrough Ethernet connection status, connected external KEM expansion module detection status, wireless Wi-Fi/Bluetooth/NFC radio hardware operational status (DP-9861-K9 standard variant only), and permanent historical cross-campus audio conference call session audit logging for complete enterprise voice communications traceability and global IT troubleshooting workflows. Built-in on-device network diagnostic utility suite includes wired LAN link signal strength measurement, Wi-Fi wireless signal strength scanning (DP-9861-K9 standard variant only), and continuous ICMP ping test functionality to validate campus wired/wireless LAN network connectivity and CUCM/SIP PBX server reachability for on-site regional IT support teams. An embedded local HTTPS web administration server integrated within the 9861 hardware enables remote off-site cross-region global IT staff to access real-time device operational status statistics and read-only device configuration data for centralized fleet monitoring without physical on-site access to the desktop IP phone unit hardware.
3. Mass Global Fleet Configuration Export/Import & Advanced Troubleshooting Utilities Centralized bulk device configuration file export/import functionality for consistent standardized enterprise device setting deployment across hundreds or thousands of global distributed 9861 desktop IP phone fleets deployed worldwide across all international geographic regions; remote wired/wireless packet capture diagnostic tool for recording local campus LAN/Wi-Fi voice/media audio and call signaling data packets to diagnose audio quality degradation and cross-campus device registration connectivity failure issues; integrated PRT Problem Reporting Tool utility to generate standardized compressed device full diagnostic log bundle archives that can be submitted directly to Cisco Global TAC Technical Support engineering teams for hardware/firmware fault resolution and technical case escalation workflows.

Regulatory Compliance, Lifecycle Status & Standard Hardware Warranty

Global Certification Compliance Summary

• Electromagnetic Interference Compliance: FCC Part 15 Class B, CE EMC Directive 2014/30/EU, AS/NZS CISPR22 Class B, ICES-003 Class B, VCCI Class B, KN22 Class B, CNS13438 Class B
• Global Electrical Safety Certifications: UL / C-UL 60950 Second Edition, UL / C-UL 62368-1, EN 60950 Second Edition (A11/A12 amendments), EN 62368, IEC 60950 Second Edition, CSA C22.2 No. 60950, CSA C22.2 No. 62368-1, AS/NZS 60950, GB4943 China national electrical safety standard
• Telephony Terminal Approvals: FCC Part 68 telephony device certification, TIA 810A HAC hearing-aid compatibility standard, TIA 920 wideband HD voice audio compliance
• Material Environmental Compliance: Full lead-free construction materials, RoHS hazardous substance restriction compliance for worldwide commercial enterprise deployments
• TAA Trade Agreements Act Compliance (DP-9861-K9 standard variant, DP-9861NR-K9 non-NFC variant)
• NFC Wireless Tag Certification (Only DP-9861-K9 standard NFC variant)
• Wi-Fi CERTIFIED Dual-Band Radio Certification (Only DP-9861-K9 standard wireless variant)
• Bluetooth 5.2 Radio Certification (Only DP-9861-K9 standard wireless variant)

Product Lifecycle Status

End-of-Sale (EoS) mid-upper tier 9800 Series desktop IP phone product line; Cisco has permanently ceased new original manufacturing production runs for DP-9861-K9. Only limited refurbished, used surplus inventory is available through third-party resellers globally. Cisco continues to release periodic critical security vulnerability patch updates and severe software bug-fix maintenance unified PhoneOS firmware releases for customers holding valid active Cisco support service contracts per official Cisco global product support lifecycle policy guidelines.

Standard Global Hardware Warranty

One-year limited Cisco worldwide commercial enterprise hardware warranty coverage valid across all global international geographic regions. Warranty covers manufacturing defects in all integrated 9861 hardware components including chassis frame, 5-inch full-color LCD display panel, internal audio DSP processing hardware, dual Gigabit Ethernet integrated switch controller modules, dual USB-A/USB-C peripheral port controller hardware, embedded Wi-Fi/Bluetooth/NFC radio hardware (DP-9861-K9 standard variant only), analog handset audio receiver hardware and all internal printed circuit board electronic components. Warranty coverage excludes physical accidental damage, liquid spill damage, scratch surface cosmetic wear, unauthorized third-party hardware modification, improper non-Cisco external power adapter usage and normal daily operational wear and tear from regular office workplace use.

Core Specification Quick Reference Bullet Points

• Model Part Number: Cisco DP-9861-K9 (Cisco Desk Phone 9861 Mid-Upper Tier Enterprise 10-Line IP Desk Phone, 9800 Series Portfolio)
• Product Family: Legacy Cisco 9800 Series Unified Communications Enterprise Desk IP Phones (PhoneOS Cross-Platform Single-Image Triple Protocol Firmware: SCCP / SIP / H.323)
• Device Form Factor: Compact Fixed Desktop Desk Phone with Integrated Analog Handset, Dual USB Interfaces (1×USB-A + 1×USB-C), Onboard Rewritable NFC Tag (Standard DP-9861-K9 Wireless Variant), Dual-Band Wi-Fi 802.11ac + Bluetooth 5.2 Radio Hardware, No Touchscreen Display, Supports Up To 3 Units of External 9800 KEM Color Key Expansion Modules, PoE Primary Power Input (IEEE 802.3af Class 3)
• CPU & Firmware Architecture: Custom Embedded Telephony Processor, Unified Cross-Platform PhoneOS Single-Image Triple Protocol Firmware (SCCP CUCM / SIP BroadWorks / Webex Calling / H.323 Video Telepresence Multiplatform Support)
• Display Specs: 5-inch Diagonal Backlit Full-Color Static TFT LCD, Native Resolution 800 × 480, Auto Ambient Light Backlight Sensing, Non-Touch Static Graphical Color Display Panel, Custom 800×480 PNG Wallpaper Support
• Physical Line Keys: 10 Backlit Tri-Color Dedicated Directory Number Line Keys (Max 10 Simultaneous DN Registrations, Expandable to 70 Total Programmable Line Keys via Soft Page Paging + Up To Three External KEM Expansion Modules)
• Dedicated Fixed Hard Key Layout: Hold, Transfer, Redial, Three-Way Conference, Mute, Speakerphone Toggle, Headset Mode Toggle, End Call, Vertical Volume Rocker Switch, 4-Way Directional Navigation Pad with Center Select Button, Action Programmable Shortcut Key, Favorite Quick Access Key, Calendar Dedicated Hard Key (Unique to 9851/9861 Tiers), Directory Corporate Lookup Hard Key, Full Backlit 12-Key Numeric Alphanumeric Dial Pad
• Audio Subsystem Key Features: G.722 Wideband HD Voice Support, Dual-Direction AI-Powered Transmit + Receive Background Noise Removal (BNR), Multi-Band Background Noise Cancellation DSP, Full-Duplex Digital Echo-Canceling Integrated Desktop Multi-Element Loudspeaker Array, Four Internal Digital Microphone Matrix, HAC Hearing-Aid Compatible Analog Handset Receiver, TTY/TDD Teletype Accessibility Support, 3.5mm Stereo Wired Headset Jack (EHS Electronic Hookswitch Remote Call Control Compatible), Dual USB-A + USB-C Ports For Certified USB Enterprise Headset Connectivity, Bluetooth 5.2 Wireless Headset Pairing Hardware (DP-9861-K9 Standard Wireless Variant Only)
• Wired Network Connectivity Hardware: Dual Independent 10/100/1000BASE-T Gigabit Ethernet RJ45 Integrated Switch Ports (Primary Uplink Port, Secondary Downstream PC Passthrough LAN Port), PoE Not Supported For External KEM Peripheral Power Draw When Attaching 2/3 Expansion Modules (Requires Separate External DC Power Supply)
• Wireless Connectivity Hardware (DP-9861-K9 Standard Wireless Variant Only): Dual-Band Wi-Fi 802.11 a/b/g/n/ac 2.4GHz/5GHz Radio, Bluetooth 5.2 Low Energy Class 1 Radio, Rewritable Passive NFC Tag Onboard For Mobile Zero-Touch Provisioning; DP-9861NR-K9 Non-NFC Variant Eliminates All Wi-Fi/Bluetooth/NFC Radio Hardware Entirely
• Peripheral Expansion Interfaces: Dual USB 2.0 Interfaces (1×USB-A Type-A Port + 1×USB-C Port), Multi-KEM Expansion Module Connection Port (Supports Up To Three External 9800 KEM Color Key Expansion Modules), No HDMI Input/Output Interfaces, No Serial Diagnostic Ports, No Secondary Micro-B USB Service Port (Only 9871 Premium Touchscreen Model includes Micro-B USB service port)
• Power Input Mode: IEEE 802.3af Class 3 PoE Power Over Ethernet Primary Power Source; Optional Separate Cisco 48V DC AC-DC External Power Adapter (Sold Separately as Accessory SKU CP-PWR-CUBE-3=), Universal Global 100–240VAC Mains Input Compatibility; External DC Power Supply Mandatory When Attaching Two or Three External KEM Expansion Modules
• Physical Mounting Options: Single-Position Adjustable Desktop Foot Stand; Optional VESA Wall Mount Conversion Bracket Accessory (Sold Separately)
• Supported QoS & Enterprise Network Standards: IPv4 Only, CDP Cisco Discovery Protocol, LLDP-MED Endpoint Discovery, IEEE 802.1Q Tagged Voice VLAN Segmentation, IEEE 802.1p Layer 2 CoS Traffic Prioritization, DSCP Differentiated Services Voice/Media Packet Marking, STUN / TURN / ICE NAT Traversal For Remote Off-Site Worker Connectivity, SNTP Synchronized Global Network Time Protocol, TFTP/HTTP/HTTPS Zero-Touch Auto-Provisioning & Bulk Global Unified PhoneOS Firmware Remote Upgrades
• Enterprise Communications Security Features: TLS Encrypted SCCP/SIP/H.323 Call Signaling Transport, SRTP AES Encrypted Wideband/Narrowband Voice Media Streams, Secure Boot Firmware Integrity Validation, SHA-256 Cryptographic Certificate Validation, SCEP Automatic Digital Certificate Enrollment For Enterprise 802.1X Wired/Wireless LAN Security, Full Local On-Device Encrypted Stored Credentials & Device Configuration Data, Dual-Tier Admin/User PIN Access Restrictions, Password-Locked Factory Reset Function to Prevent Unauthorized Device Data Wiping, TPM 2.0 Trusted Platform Module onboard hardware security chip, FIPS 140-2 / FIPS 140-3 cryptographic module compliance
• Core Unified Communications Global Voice Call Feature Set: Up To 10 Independent DN Logical Directory Number Identities, Multi-Call-Per-Line with Call Waiting, Blind/Consultative Call Transfer, Three-Way Wideband Audio Conference Bridge, Call Hold/Resume, One-Touch Global Microphone Mute, Call Park, Directed/Group Call Pickup, All-Condition Call Forward Rules (Unconditional/Busy/No Answer), DND Do Not Disturb Operating Mode, Full-Color Caller ID Name & Number Global Display, Automatic Last Number Redial, Pre-Dial Extension Number Editing Before Call Initiation, Intercom Auto-Answer for Internal Cross-Department Peer Communications, Fully Customizable Color LCD Soft-Key Speed-Dial Shortcut Layout Editor, MLPP Multilevel Precedence & Preemption Priority Call Routing, Barge/CBarge Intrusive Supervisor Call Monitoring, Meet-Me Multi-Party Conference Bridges, Malicious Caller ID Logging, Multiple Customizable User Ringtone & Notification Alert Profiles, Keypad Lock PIN Security Protection, CCX Cisco Compatible Extensions XML Custom Enterprise Global Business Application Rendering Support
• Exclusive 9861 Standard Wireless Variant Differentiator Features vs DP-9861NR-K9 Non-NFC No-Radio Variant: Onboard Rewritable NFC Tag Hardware for Mobile Zero-Touch Provisioning, Dual-Band 2.4G/5G Wi-Fi 802.11ac Wireless Radio, Bluetooth 5.2 Low Energy Class 1 Radio Module; All Remaining Core Hardware, Display, Keypad, Audio, Dual USB Ports, Gigabit Ethernet Switch, Multi-KEM Expansion Support and Unified PhoneOS Firmware Feature Sets Are Identical To The DP-9861NR-K9 Non-NFC No-Radio Variant
• Mid-Tier 9861 Series General Differentiator Features vs Entry-Level 9811 / Mid-Tier 9841 / Mid-High Tier 9851 / Premium 9871 Models: 10 Physical Backlit Tri-Color Line Keys (9811 only 2 lines, 9841 only 4 lines, 9851 only 6 lines); Larger 5-inch Backlit Full-Color Static LCD Display (9811 unbacklit small mono screen, 9841 smaller 3.5-inch grayscale screen, 9851 smaller 3.7-inch color screen, 9871 higher-resolution touchscreen panel); Dual USB-A + USB-C Peripheral Ports (9811 zero USB ports, 9841 single USB-A port); Dedicated Calendar Hard Key (Absent on 9811/9841 mid/low tiers); Hardware Compatible With Up To Three External 9800 Series Color Key Expansion Modules (KEM) (9811/9841 no KEM expansion support, 9851 only supports single KEM panel); Higher IEEE 802.3af Class 3 PoE Power Budget (9811/9841 Class 2 PoE); AI-Powered Dual-Direction Transmit + Receive Background Noise Removal (BNR) (Base 9811/9841/9851 only transmit-side AI noise suppression); Onboard NFC Tag For Mobile Zero-Touch Provisioning (Only Standard DP-9861-K9 NFC/Wireless Variant; DP-9861NR-K9 Non-NFC Variant Removes NFC Tag Hardware Entirely); Dual-Band Wi-Fi 802.11ac + Bluetooth 5.2 Wireless Radio Hardware (Only Standard DP-9861-K9 Wireless Variant; DP-9861NR-K9 No-Radio Variant Eliminates All Wi-Fi/Bluetooth Radio Modules); 4-Way Directional Navigation Pad (9811 simplified 2-way navigation cluster); No Touchscreen Display (9871 features 5-inch High-Resolution Touchscreen Panel); Static Non-Touch Color LCD Panel (9871 capacitive multi-touch screen); Supports Up To Three External KEM Expansion Modules (9851 only single KEM panel with PoE power, multiple KEMs require external DC power supply for 9861/9871); No Secondary Micro-B USB Service Port (Only 9871 Premium Touchscreen Model include dedicated Micro-B USB diagnostic service port)
• Productivity & Unified Collaboration Feature Suite: Network LDAPv3 Multi-Language Global Corporate Employee Directory Real-Time Wildcard Search, Local Persistent Flash Memory Long-Term Call Log Storage (Dialed Outgoing / Received Answered / Missed Incoming Global Campus Voice Conference Calls), Bluetooth Mobile Smartphone Contact List Synchronization Hardware (DP-9861-K9 Standard Wireless Variant Only), Native Preloaded Cisco Unified Communications Manager (UCM) Device Application Suite, Unified WebEx Cloud-Synchronized Cross-Device Contact & Call History Logs, One-Touch Voicemail MWI Access Portal for Message Playback & Greeting Configuration
• Centralized Global IT Administration & Remote Management Tools: TFTP Zero-Touch Auto-Provisioning & Remote Bulk Global Unified PhoneOS Firmware Upgrades, CUCM / WebEx Control Hub / BroadWorks SIP PBX Central Real-Time Device Status Monitoring & Call Session Syslog Global Audit Logging, On-Board Wired LAN Ping Diagnostic Utility, Embedded Local HTTPS Web Administration Server, Remote Wired/Wireless Packet Capture Diagnostic Tool, PRT Problem Reporting Log Generation Utility for Cisco TAC Technical Support Escalation
• Global Target Enterprise Deployment Scenarios: Department Managers, Corporate Knowledge Workers, Administrative Staff With Moderate 2–10 Multi-Line Calling Requirements, Shared Hot-Desking Open-Plan Office Hubs, Flexible Permanent Employee Workstations, Medium-Volume Reception Overflow Desks, Auxiliary Call Center Agent Primary Backup Stations Deployed Across EMEA, APAC, Latin America and North America; distributed multi-region campus 9861 / 9861NR desk IP phone fleets, organizations running CUCM on-premises unified communications infrastructure, BroadWorks hosted SIP PBX global cloud platforms, Cisco Webex Calling cloud UCaaS subscribers, wired dual Gigabit Ethernet enterprise access switch network infrastructures, global IT teams prioritizing mid-upper tier balanced-feature enterprise voice desk IP phones with 10-line support, dual USB-A/USB-C headset ports, large 5-inch backlit full-color static LCD screen, calendar dedicated hard key, support for up to three external KEM BLF expansion modules, onboard NFC zero-touch provisioning (standard wireless variant), dual-band Wi-Fi + Bluetooth wireless radio hardware for cable-free hot-desking deployments, TAA compliance and zero NFC/Wi-Fi/Bluetooth radio hardware non-NFC no-radio variant for secure deployments that prohibit wireless signal emissions and mobile NFC provisioning, unified cross-platform single-image SCCP/SIP/H.323 triple-protocol PhoneOS firmware eliminating separate CUCM/cloud SIP firmware reflashing administrative overhead, full ADA accessibility compliance for regulated public sector, education and healthcare enterprise deployments, robust enterprise TLS/AES encrypted audio media communications security for worldwide cross-border corporate campus office workstations operating in standard fixed wired office desktop environments requiring mid-upper tier balanced-feature enterprise voice calling desk IP phones without premium touchscreen display extras, and optional non-NFC no-radio hardware variant for restricted-access secure corporate network deployments that disallow mobile NFC zero-touch provisioning and all wireless radio signal emissions.
• Lifecycle Status: End-of-Sale (EoS) Legacy 9800 Series Unified Communications Mid-Upper Tier Enterprise Desk IP Phone Hardware, No New Original Production Manufacturing Stock Available, Limited Refurbished / Surplus Inventory Only; Actively Supported Critical Security Patch & Bug-Fix Maintenance Unified PhoneOS Firmware Release Schedule Maintained Per Official Cisco Global Product Support Lifecycle Policy
• Standard Global Hardware Warranty: One-Year Limited Cisco Worldwide Commercial Enterprise Hardware Warranty Valid Across All Global International Geographic Regions