Cisco CP-7841-K9
Cisco UC Phone 7841
Product Highlights
What's Included
(1) CP-7800-HS-HOOK
(1) CP-7800-HS-CORD
*Power Adapter not included
Deploying reliable, cost-effective voice communications across dozens — or hundreds — of desks shouldn't mean compromising on audio quality or manageability. The Cisco CP-7841-K9 (UC Phone 7841) is a four-line IP phone from the Cisco IP Phone 7800 Series, purpose-built for information workers, administrative staff, and managers with moderate voice communication needs.
The CP-7841-K9 features a high-resolution 3.5-inch backlit greyscale display (396×162 pixels), four fully programmable line/feature keys, and dedicated fixed-function buttons for conferencing, transfer, hold, messaging, and directory access. Wideband audio powered by the G.722 codec delivers superior voice clarity across the handset, headset, and full-duplex speakerphone, while an integrated 10/100/1000 Gigabit Ethernet switch provides a pass-through port for a downstream PC — eliminating the need for a second network drop at every desk.
Powered via PoE Class 1 (IEEE 802.3af), the Cisco 7841 keeps desktop cabling simple and supports Cisco EnergyWise for centralized power management. It is compatible with Cisco Unified Communications Manager, Cisco Business Edition 6000, Webex Calling, and select third-party hosted call control platforms, giving IT teams flexible deployment options across on-premises, hybrid, and cloud architectures. With secure encrypted communications and an ergonomic design, the CP-7841-K9 is a proven, enterprise-grade desk phone that balances features, quality, and total cost of ownership.
Features & Benefits
Wideband Audio Performance
The Cisco 7841 supports wideband audio via the G.722 codec across the handset, headset, and speakerphone. This delivers noticeably richer, more natural voice quality compared to narrowband phones — reducing listener fatigue and improving comprehension during long or critical calls.
Integrated Gigabit Ethernet Switch
Two 10/100/1000BASE-T RJ-45 Ethernet ports let the phone share a single network drop with a co-located PC. This integrated switch lowers cabling costs and simplifies desk installations, especially in large-scale rollouts where every saved port and cable run adds up.
Power over Ethernet (PoE Class 1)
As an IEEE 802.3af PoE Class 1 device, the CP-7841-K9 draws power directly from the network switch — no separate power adapter needed. Combined with Cisco EnergyWise support, IT teams can schedule power-save modes during off-hours to reduce energy consumption across the entire phone fleet.
Flexible Call Control Support
The Cisco 7841 works with Cisco Unified Communications Manager, Cisco Business Edition 6000, Webex Calling, Cisco Hosted Collaboration Solution, and supported third-party call control platforms. This flexibility protects your investment whether you run on-premises, cloud, or hybrid telephony infrastructure.
Secure Encrypted Communications
The Cisco IP Phone 7800 Series is designed with always-on reliability and secure encrypted communications. This helps organizations meet compliance requirements and protect sensitive voice conversations from eavesdropping.
Ergonomic, Space-Efficient Design
A compact form factor with a dual-position adjustable footstand keeps the phone comfortable at any desk. Optional wall-mount kits are available for lobbies, common areas, or space-constrained environments. The replaceable bezel allows cosmetic refreshes without replacing the entire unit.
Deployment Scenarios
Enterprise Office & Administrative Desks
The CP-7841-K9 is ideal for information workers, executive assistants, and administrative staff who manage moderate call volumes across multiple lines. Four programmable line keys let users handle simultaneous calls, speed dials, and busy lamp field (BLF) monitoring from a single phone.
Branch Office & Remote Site Deployment
With support for Cisco Unified SRST (Survivable Remote Site Telephony), the 7841 maintains call capability even when the WAN link to the central call manager is interrupted. PoE powering and Gigabit pass-through simplify branch wiring and reduce infrastructure costs.
Small-to-Medium Business VoIP Migration
Organizations transitioning from legacy analog or digital phone systems to IP communications benefit from the 7841's straightforward deployment, SIP protocol support, and compatibility with hosted and cloud call control platforms — minimizing disruption while modernizing the voice infrastructure.
Shared Workspaces & Hot-Desking
Cisco Extension Mobility allows users to log in to any CP-7841-K9 and load their personal profile, speed dials, and line configuration. This makes the 7841 well-suited for hot-desking environments, shared offices, and shift-based workplaces.
General
Display
Audio
Networking
Buttons & Navigation
Physical
Environmental
Compliance
Power
Compatibility Notes
Call Control Platform Compatibility
- Cisco Unified Communications Manager (CUCM) — 8.5.1, 8.6.2, 9.1.2, 10.x and later
- Cisco Business Edition 6000 — 8.6.2, 9.1.2, 10.x and later
- Cisco Hosted Collaboration Solution — 8.6.2 and later
- Cisco Unified SRST — 8.x and later
- Cisco Webex Calling — Supported
- Third-party SIP call control — Supported (feature availability may vary)
Licensing
- Requires an Enhanced User Connect License (UCL) for Cisco Unified Communications Manager.
Power
- IEEE 802.3af PoE (Class 1) — max 3.84W
- Optional AC power adapter: CP-PWR-CUBE-3= (sold separately; requires a region-specific AC cord)
Accessories (sold separately)
- Wall-mount kit
- Power adapter (CP-PWR-CUBE-3=) and AC country cord
- Replacement handset and handset cord
Downloads & Resources
Frequently Asked Questions
| Part Number | Product | Key Difference |
|---|---|---|
| CP-7811-K9 | Cisco IP Phone 7811 | 1-line phone with no backlit display — lower cost option for basic single-line users |
| CP-7821-K9 | Cisco IP Phone 7821 | 2-line phone with 10/100 Ethernet — step-down model for light-use desks (Basic UCL tier) |
| CP-7861-K9 | Cisco IP Phone 7861 | 16-line phone in the same 7800 Series — step-up for receptionists or users managing many lines |
| CP-8841-K9 | Cisco IP Phone 8841 | 5-inch color display with 5 lines — premium 8800 Series alternative with enhanced visual experience |