Cisco DP-9861-K9 IP Phone

Product Overview

The Cisco DP-9861-K9 IP Phone is an enterprise business desk phone from the Cisco Desk Phone 9800 Series, designed for organizations that need flexible, secure, and high-quality IP telephony. With a 5-inch 800 × 480 backlit color LCD, 10 physical line keys, Gigabit Ethernet, dual-band Wi-Fi, and Bluetooth 5.2, the Cisco 9861 provides a feature-rich communication platform for modern business environments.

For organizations comparing Cisco business desk phones, the Cisco DP-9851-K9 IP Phone provides a related 9800 Series option, while the Cisco DP-9841-K9 IP Phone offers another model within the same product family. Users looking for a higher-end touch-based alternative can also consider the Cisco DP-9871-K9 IP Phone.

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Key Features and Benefits

5-Inch Color Display and Business User Experience

The Cisco DP-9861-K9 features a 5-inch backlit color LCD with an 800 × 480 resolution. The display provides clear access to call information, menus, directories, and supported phone functions. The 9861 also includes 10 physical line keys and supports up to 130 line and programmable line keys depending on the calling platform and configuration.

For users comparing different Cisco desk phone configurations, the Cisco CP-8861-K9 IP Phone and Cisco CP-8851-K9 IP Phone are additional Cisco business-phone options available through NexoGet.

Gigabit Ethernet Connectivity

The Cisco DP-9861-K9 includes an internal two-port Cisco Ethernet switch supporting 10/100/1000BASE-T connectivity. This allows the phone and a co-located computer to share a network connection while supporting separate VLAN configurations for voice and data traffic when configured by the network administrator.

For a complete enterprise IP telephony deployment, the phone can be used alongside appropriate Cisco network infrastructure. Relevant options in the NexoGet catalog include the Cisco Catalyst C1200-8T-E-2G Managed Switch and Cisco Catalyst C1200-8P-E-2G Managed Switch.

Wi-Fi and Bluetooth Connectivity

The Cisco DP-9861-K9 supports Wi-Fi Certified 802.11a/b/g/n/ac wireless networking with 2.4 GHz and 5 GHz dual-band operation. The model also provides Bluetooth 5.2 Low Energy, Bluetooth Enhanced Data Rate, and supported Bluetooth profiles for compatible wireless devices and accessories.

This wireless functionality makes the Cisco 9861 suitable for business environments where flexible desk placement or wireless network deployment is required. The standard DP-9861-K9 should not be confused with the NexoGet Cisco DP-9861-K9 product listing and no-radio variants should always be checked separately when ordering.

Advanced Audio and Cisco Smart Audio

Audio is an important part of the Cisco DP-9861-K9 design. Cisco specifies support for OPUS, G.722, G.722.2, iSAC, G.711, G.729a/b, and iLBC codecs. The phone also supports Cisco HD Audio and a range of audio-processing technologies including acoustic echo cancellation, automatic gain control, packet-loss concealment, adaptive jitter buffering, and comfort-noise generation.

The 9861 additionally supports Cisco Smart Audio with conventional and AI-based background-noise and voice removal on the sending side and background-noise removal on the receiving side. Cisco also specifies technology that can enhance the in-call experience for PSTN calls by extending narrowband audio toward high-definition wideband audio on the 9861 and 9871 models.

For users who need to compare other Cisco enterprise phones, the Cisco CP-8845-K9 IP Phone and Cisco CP-8875-K9 IP Phone are additional options from the Cisco IP phone portfolio.

Technical Specifications

Compatibility and Deployment

The Cisco DP-9861-K9 supports enterprise calling environments including Cisco Webex Calling, Cisco Unified Communications Manager, Webex Dedicated Instance, Cisco BroadWorks, Microsoft SIP Gateway, and Asterisk, subject to the supported configuration and platform requirements.

For CUCM deployments, Cisco notes that supported Desk Phone 9800 Series models may require an appropriate device package depending on the CUCM version. Organizations should therefore verify firmware, device-package, provisioning, licensing, and calling-platform requirements before deployment.

The phone supports SIP signaling together with SDP, RTP, RTCP, IPv4, IPv6, DHCP, DNS, VLAN, LLDP, LLDP-MED, HTTPS, and other network technologies used in managed IP telephony environments.

For larger Cisco voice deployments, related phones such as the Cisco CP-8865-K9 IP Phone, Cisco CP-8841-K9 IP Phone, and Cisco CP-7821-K9 IP Phone can be evaluated according to user requirements and calling-platform compatibility.

Security Features

Security is an important component of the Cisco Desk Phone 9800 Series. The Cisco DP-9861-K9 supports secure boot, device authentication, configuration-file authentication and encryption, TLS signaling, SRTP media encryption, secure credential storage, 802.1X, Trusted Platform Module 2.0, and other enterprise security mechanisms.

These features can help organizations integrate the phone into managed corporate voice networks where identity, signaling, media, and configuration security are important deployment considerations.

Use Cases

• Corporate offices and enterprise departments
• Executive and professional workspaces
• Reception and front-desk environments
• Customer service and support teams
• Enterprise IP telephony deployments
• Organizations using Cisco Webex Calling or supported Cisco calling platforms
• Business environments requiring wired and wireless network connectivity

Organizations comparing Cisco IP phone options can also review the Cisco CP-7861-K9 IP Phone and Cisco CP-8811-K9 IP Phone for different enterprise deployment requirements.

Related Cisco Products

The Cisco DP-9861-K9 belongs to the Cisco Desk Phone 9800 Series and can be evaluated alongside other Cisco desk phones according to display type, line capacity, wireless requirements, audio capabilities, calling platform, and deployment environment.

For organizations building the network infrastructure around their IP phones, the Cisco Catalyst C9200L-24T-4X-E is another Cisco networking product available from NexoGet. Customers can also browse the Cisco products available at NexoGet to compare additional Cisco networking and communication equipment.

Final Summary

The Cisco DP-9861-K9 IP Phone is a feature-rich enterprise desk phone combining a 5-inch color display, 10 physical line keys, Gigabit Ethernet, dual-band Wi-Fi, Bluetooth 5.2, advanced Cisco Smart Audio, and enterprise security capabilities. Its broad platform support makes it suitable for a range of professional IP telephony environments. Before ordering, verify the required calling platform, firmware, licensing, regional configuration, and deployment requirements for your organization.

Frequently Asked Questions

What is the Cisco DP-9861-K9 IP Phone?

The Cisco DP-9861-K9 is an enterprise IP desk phone from the Cisco Desk Phone 9800 Series. It features a 5-inch color LCD, Gigabit Ethernet, Wi-Fi, Bluetooth 5.2, advanced audio technologies, and enterprise calling-platform support.

What size display does the Cisco DP-9861-K9 have?

The Cisco DP-9861-K9 features a 5-inch backlit color LCD with an 800 × 480 pixel resolution.

Does the Cisco DP-9861-K9 support Wi-Fi?

Yes. The Cisco DP-9861-K9 supports Wi-Fi 802.11a/b/g/n/ac with dual-band 2.4 GHz and 5 GHz operation.

Does the Cisco DP-9861-K9 support Bluetooth?

Yes. The Cisco DP-9861-K9 supports Bluetooth 5.2 Low Energy and Bluetooth Enhanced Data Rate for compatible devices and accessories.

How many physical line keys does the Cisco DP-9861-K9 have?

The Cisco DP-9861-K9 has 10 physical line keys and supports up to 130 line and programmable line keys depending on the calling platform and configuration.

Does the Cisco DP-9861-K9 have Gigabit Ethernet?

Yes. The phone includes an internal two-port 10/100/1000BASE-T Ethernet switch.

Which platforms support the Cisco DP-9861-K9?

Cisco lists support for Cisco Webex Calling, Cisco Unified Communications Manager, Webex Dedicated Instance, Cisco BroadWorks, Microsoft SIP Gateway, and Asterisk, subject to platform and configuration requirements.

Does the Cisco DP-9861-K9 support PoE?

The Cisco Desk Phone 9800 Series is specified with IEEE 802.3af and 802.3at compliance. The exact power and deployment configuration should be verified for the intended installation.

What is the difference between the DP-9861-K9 and DP-9861NR-K9?

The DP-9861-K9 is the standard Carbon Black Cisco Desk Phone 9861 configuration, while DP-9861NR-K9 is the No Radio variant. The required wireless configuration should be confirmed before ordering.