Cisco DP-9871-K9 IP Phone

Cisco DP-9871-K9 IP Phone – Cisco Desk Phone 9871 Overview

The Cisco DP-9871-K9 IP Phone is a premium enterprise desk phone from the Cisco Desk Phone 9800 Series, designed for organizations that need advanced business communication, intuitive touchscreen operation, flexible network connectivity, and enterprise-grade security. The Cisco 9871 combines a 5-inch color touchscreen, Gigabit Ethernet, dual-band Wi-Fi, Bluetooth 5.2, Power over Ethernet, advanced Cisco Smart Audio, and a wide range of enterprise calling features in a modern desktop phone.

As one of the advanced models in the Cisco IP Phones portfolio, the DP-9871-K9 is designed for professional users who need more than a basic VoIP endpoint. Its high-resolution touchscreen provides an intuitive interface for managing calls, contacts, directories, meetings, and supported collaboration features, while its wired and wireless connectivity options make it suitable for a variety of enterprise network environments.

The Cisco Desk Phone 9871 is also designed to work with supported Cisco and third-party calling platforms. Cisco lists interoperability with Webex Calling, Cisco Unified Communications Manager, Webex Dedicated Instance, Cisco BroadWorks, Microsoft SIP Gateway, and Asterisk, subject to platform requirements, firmware, configuration, and licensing.

Watch Product Video Cisco DP-9871-K9 IP Phone  
Download PDF Datasheet|Cisco DP-9871-K9 IP Phone

DP-9871-K9 5-Inch 1280 × 720 Color Touchscreen

One of the most important features of the Cisco DP-9871-K9 is its 5-inch backlit color touchscreen. The display provides a 1280 × 720 resolution, giving users a clear and modern interface for everyday business communication.

Unlike Cisco desk phones that rely primarily on a conventional LCD interface and physical line keys, the Cisco 9871 IP Phone uses a touchscreen-centered experience. This makes navigation between supported calling functions, contacts, directories, meetings, and other applications more intuitive for users who are accustomed to modern smartphones and collaboration devices.

The 5-inch touchscreen also gives the Cisco 9871 enough screen space to present detailed call information and application interfaces without requiring an unnecessarily large desktop footprint. Display brightness can be adjusted, and Cisco also supports customizable wallpaper and logo functionality on the 9871 model, depending on the registered calling platform and configuration.

Cisco 9871 IP Phone Display and User Experience

The combination of a color display and 1280 × 720 resolution is particularly useful for users who frequently interact with directories, contacts, collaboration features, and multiple communication functions throughout the working day. The touchscreen interface is one of the main characteristics that differentiates the DP-9871-K9 from more traditional Cisco business IP phones.

For organizations comparing different models in the same product family, the Cisco DP-9861-K9 is a useful alternative. Both belong to the Cisco Desk Phone 9800 Series, but the DP-9861-K9 uses a 5-inch 800 × 480 color LCD, while the DP-9871-K9 provides a 5-inch 1280 × 720 color touchscreen.

Cisco DP-9871-K9 IP Phone with Advanced Cisco Smart Audio

Clear voice communication is a critical requirement for enterprise IP telephony. The Cisco DP-9871-K9 IP Phone includes Cisco HD Audio and Cisco Smart Audio technologies designed to improve the quality of business conversations.

Cisco Smart Audio combines conventional and AI-based background-noise and voice removal on the sending side for supported models including the 9871. Cisco also specifies conventional and AI-based background-noise removal on the receiving side for the 9861 and 9871. For supported PSTN calling scenarios, these models can also enhance low-fidelity narrowband audio toward wideband quality.

The result is an enterprise desk phone designed to provide clearer conversations in environments where background noise can interfere with communication. This can be particularly useful in modern offices, open-plan workspaces, shared offices, customer service environments, and other business locations where multiple people may be speaking or working nearby.

DP-9871-K9 HD Voice and Audio Codec Support

The Cisco 9871 supports a broad range of enterprise voice technologies and audio codecs, including OPUS, G.722, G.722.2, iSAC, G.711 a-law/u-law, G.729a/b, and iLBC. Cisco also documents acoustic echo cancellation, automatic gain control, comfort noise generation, voice activity detection, packet loss concealment, adaptive jitter buffering, and other audio-processing capabilities.

These technologies allow the Cisco Desk Phone 9871 to support different enterprise voice environments while maintaining a focus on voice quality and communication reliability.

Cisco 9871 Wi-Fi and Bluetooth 5.2 Connectivity

The DP-9871-K9 provides both wired and wireless connectivity options. The standard Cisco 9871 supports dual-band Wi-Fi across the 2.4 GHz and 5 GHz frequency bands using 802.11a/b/g/n/ac standards. Cisco identifies the 9871 as Wi-Fi CERTIFIED, with support for enterprise wireless security technologies including WPA, WPA2, and WPA3.

Wireless connectivity can provide additional flexibility for organizations deploying desk phones in environments where a conventional Ethernet connection may not always be the preferred deployment method. It can also simplify certain office moves and workplace configurations.

The standard DP-9871-K9 also includes Bluetooth 5.2, Bluetooth Low Energy, and Bluetooth Enhanced Data Rate functionality. Supported Bluetooth profiles include Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Human Interface Device Profile (HID), and Phone Book Access Profile (PBAP).

It is important to distinguish the standard DP-9871-K9 from the DP-9871NR-K9. Cisco documents the NR version as the no-radio variant without Wi-Fi, Bluetooth, and NFC capabilities. The standard DP-9871-K9 is the appropriate model when integrated wireless functionality is required.

DP-9871-K9 Gigabit Ethernet and PoE Connectivity

For organizations that prefer a wired network deployment, the Cisco DP-9871-K9 IP Phone includes an internal two-port 10/100/1000BASE-T Ethernet switch. This provides Gigabit Ethernet connectivity for the phone while also allowing a co-located computer to share the network connection through the phone.

The phone supports VLAN configuration for separating voice and data traffic, helping administrators design more structured enterprise network deployments. The combination of Gigabit Ethernet and an integrated Ethernet switch makes the Cisco 9871 suitable for office environments where both voice communication and desktop network connectivity are required.

The Cisco 9871 also supports IEEE 802.3af Power over Ethernet Class 3. When compatible PoE infrastructure is available, the phone can receive power through the Ethernet connection rather than requiring a separate local power connection.

For organizations building a complete Cisco network infrastructure, the Cisco C1200-8P-E-2G Managed Switch and Cisco C1200-8FP-2G can be considered as related network infrastructure products, depending on the required port count and PoE capacity.

Cisco Desk Phone 9871 Enterprise Calling Features

The Cisco Desk Phone 9871 is designed for business users who need a broad set of enterprise telephony functions rather than simple point-to-point calling. Depending on the registered calling platform, available features can include caller ID, call waiting, call hold and resume, call forwarding, call transfer, conference calling, call park, call pickup, speed dial, busy lamp field, voicemail, shared lines, directory search, call history, do-not-disturb, redial, and other business communication functions.

The Cisco 9871 also supports selected Webex features, including unified call history, unified directory, hybrid calendar, meetings, and One Button To Push meetings where supported by the deployment environment.

For supported Cisco collaboration environments, the 9871 can also provide features such as in-meeting transcription, in-call transcription, Webex In-Meeting Summary, hot desking, custom wallpaper and logo, Cisco Headset Smart Pairing, and other collaboration capabilities.

DP-9871-K9 for Webex and Unified Communications

The DP-9871-K9 is particularly relevant for organizations that are building or upgrading a unified communications environment. Its combination of touchscreen operation, Webex-related features, wireless connectivity, advanced audio processing, and enterprise security makes it a flexible endpoint for supported Cisco collaboration deployments.

Organizations comparing Cisco collaboration endpoints can also review the Cisco DP-9851-K9 and Cisco DP-9841-K9 as alternative models within the Cisco Desk Phone 9800 Series.

Cisco DP-9871-K9 Security Features

Enterprise IP phones are part of the corporate network, so security is an important consideration when selecting a business communication endpoint. The Cisco DP-9871-K9 IP Phone includes multiple security technologies designed for enterprise deployments.

• Secure Boot
• 802.1X authentication
• SIP OAuth
• Secure credential storage
• Device authentication
• Encrypted configuration
• Image authentication
• TLS signaling security
• SRTP media encryption
• TPM 2.0
• TLS 1.3
• Security-Enhanced Linux
• Secure erase capabilities

These security mechanisms help administrators integrate the Cisco 9871 into enterprise network environments where authentication, encrypted signaling, secure media, and protected device configuration are important requirements.

Cisco 9871 IP Phone Supported Platforms

The Cisco DP-9871-K9 is designed for use across a range of supported enterprise calling environments. Cisco lists the Cisco Desk Phone 9800 Series as interoperable with Cisco Webex Calling, Cisco Unified Communications Manager (CUCM), Webex Dedicated Instance, and Cisco BroadWorks. The series is also compatible with Microsoft SIP Gateway and certified for interoperability with Asterisk.

For CUCM deployments, Cisco notes that the 9800 Series models other than the 9811 are supported on CUCM 12.5 or later, although a device package may be required depending on the CUCM version. Organizations should always verify the exact firmware, software, licensing, and platform requirements before deployment.

DP-9871-K9 Technical Specifications

Cisco DP-9871-K9 Use Cases for Business Networks

The Cisco 9871 IP Phone can be used across different professional environments where reliable business communication and advanced collaboration features are required.

• Enterprise offices: Advanced desk-based communication for employees, managers, and professional users.
• Executive and management offices: High-resolution touchscreen and flexible connectivity for users handling frequent calls.
• Customer service environments: Advanced audio processing and enterprise telephony functions for communication-intensive roles.
• Hybrid workplaces: Wi-Fi, Bluetooth, Webex features, and hot-desking support provide deployment flexibility.
• Unified communications: Integration with supported Cisco and SIP-based calling platforms.
• Corporate network environments: Gigabit Ethernet, VLAN support, PoE, and enterprise security features.

DP-9871-K9 vs Cisco DP-9861-K9

The DP-9871-K9 and DP-9861-K9 are both advanced models in the Cisco Desk Phone 9800 Series, but their user interfaces are different. The DP-9871-K9 features a 5-inch 1280 × 720 color touchscreen, while the DP-9861-K9 uses a 5-inch 800 × 480 color LCD with physical line keys.

The Cisco DP-9861-K9 IP Phone can therefore be considered when an organization prefers physical line and feature keys, while the Cisco 9871 is designed around a touchscreen-first user experience.

Related Cisco IP Phones and Networking Products

Organizations evaluating the Cisco DP-9871-K9 IP Phone may also want to compare other Cisco business communication endpoints. The Cisco CP-8875-K9 provides an alternative Cisco video-enabled desk phone, while the Cisco CP-8865-K9 is another enterprise collaboration endpoint.

For users looking for other Cisco IP phone models, the Cisco CP-8861-K9, Cisco CP-8851-K9, Cisco CP-8845-K9, and Cisco CP-8841-K9 provide additional options within Cisco’s enterprise IP phone portfolio.

For a more entry-level business voice endpoint, the Cisco CP-7861-K9 and Cisco CP-7841-K9 can also be reviewed. The Cisco CP-7821-K9 is another option for organizations evaluating Cisco enterprise voice endpoints.

Why Choose the Cisco DP-9871-K9 IP Phone?

The Cisco DP-9871-K9 IP Phone combines the features expected from a modern enterprise communication endpoint with the management, connectivity, audio, and security capabilities associated with Cisco business networking and collaboration solutions.

Its 5-inch 1280 × 720 color touchscreen provides a modern user interface, while Gigabit Ethernet, dual-band Wi-Fi, Bluetooth 5.2, PoE Class 3, USB connectivity, Cisco Smart Audio, and enterprise security technologies provide flexibility for different deployment scenarios.

For organizations planning a modern Cisco voice or unified communications deployment, the Cisco Desk Phone 9871 provides a feature-rich endpoint that can support both traditional enterprise calling workflows and selected modern collaboration experiences.

Before purchasing, organizations should verify the required calling platform, firmware compatibility, licensing, and network requirements for their specific environment. For Cisco networking and communication products, you can also explore the Cisco products available from NexoGet or contact the NexoGet team for product and deployment information.