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Cisco DP-9851-L-K9= 9851 IP Phone - Corded Desktop - First Light - 6 SIP Lines - 3. 7" LCD - Dual PoE Ports
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Product Features
Technical Overview
The Cisco 9851 delivers robust telephony features with dual RJ-45 network ports that support Power over Ethernet (PoE), allowing both data and electrical power transmission through a single cable. This simplifies installation by eliminating the need for separate power adapters in PoE-enabled network environments. The phone includes a USB port with power delivery support, enabling connectivity for accessories or peripheral devices.
Audio functionality is comprehensive, with a speakerphone for hands-free conversations and caller ID for identifying incoming calls. The 3.7" LCD screen provides clear visual feedback for call management, directory access, and system status. Connectivity is corded via Ethernet, ensuring stable network connections without wireless interference concerns.
This section brings together practical product details such as IP Phone Technology, Base Unit Connectivity Technology, Total Number of Phone Lines, Screen Type, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
The Cisco 9851 combines essential business telephony features with practical deployment advantages. Its 6-line capacity supports multiple concurrent calls, making it suitable for reception desks, shared workspaces, or small team environments where call volume management is important.
Simplified Installation
Power over Ethernet support reduces cable clutter by delivering both data and power through network cables, facilitating cleaner desk setups and easier deployment in office environments.
- Single-cable power and data
- Eliminates power adapter needs
- Compatible with standard PoE switches
Enhanced Connectivity
Dual network ports enable daisy-chaining to connect additional devices like computers or other network peripherals without requiring extra switch ports.
- Two RJ-45 ports for flexibility
- USB port for accessories
- Supports network expansion
Deployment / Use Cases
The Cisco 9851 is well-suited for business environments requiring reliable voice communications with moderate line capacity. Its desktop design and corded connectivity make it ideal for fixed workstation installations where consistent performance is prioritized over mobility.
Common deployment scenarios include reception areas where multiple incoming lines need management, shared office spaces requiring basic telephony functionality, and small business settings that benefit from straightforward VoIP implementation. The Energy Star certification makes it appropriate for organizations with sustainability initiatives or energy consumption considerations.
Reception & Front Desk
The 6-line capacity handles multiple incoming calls efficiently, while the clear LCD display and speakerphone support facilitate professional call handling in customer-facing positions.
Small Office Environments
PoE compatibility simplifies network infrastructure, and the desktop form factor provides a permanent communication solution for individual workstations or shared spaces.
Physical Profile
The Cisco 9851 measures 8.90" (226.06 mm) in height, 8.40" (213.36 mm) in width, and 1.90" (48.26 mm) in depth, with an approximate weight of 2.13 lb (968 g). Its compact desktop footprint fits comfortably on standard office desks without occupying excessive workspace. The First Light color offers a neutral, professional appearance that blends with various office decors.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 8.90" (226.06 mm), 8.40" (213.36 mm), 1.90" (48.26 mm), 2.13 lb (968 g). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 8.40" (213.36 mm)
- Depth
- 1.90" (48.26 mm)
- Height
- 8.90" (226.06 mm)
- Weight
- 2.13 lb (968 g)
Highlights
- Supports 6 SIP lines for multiple concurrent calls
- 3.7" LCD screen for clear call information display
- Dual RJ-45 network ports with PoE support
- USB port with power delivery capability
- Built-in speakerphone for hands-free communication
- Caller ID functionality for incoming call identification
- Energy Star certified for energy-efficient operation
- Desktop form factor in First Light color
- Corded connectivity for reliable network performance
- Compatible with standard VoIP systems
Specifications
| Specifications | |
|---|---|
| Manufacturer | Cisco Systems, Inc |
| Manufacturer Part Number | DP-9851-L-K9= |
| Brand Name | Cisco |
| Product Series | 9800 |
| Product Model | 9851 |
| Product Name | 9851 IP Phone |
| Product Type | IP Phone |
| Technical Information | |
| IP Phone Technology | VoIP |
| Base Unit Connectivity Technology | Corded |
| Total Number of Phone Lines | 6 |
| Caller ID | Yes |
| Speakerphone | Yes |
| Display & Graphics | |
| Screen Type | LCD |
| Screen Size | 3.7" |
| Interfaces/Ports | |
| Network (RJ-45) | Yes |
| Number of Network (RJ-45) Ports | 2 |
| USB | Yes |
| PoE (RJ-45) Port | Yes |
| USB Power Delivery Support | Yes |
| Physical Characteristics | |
| Color Family | Other |
| Product Color | First Light |
| Form Factor | Desktop |
| Height | 8.90" (226.06 mm) |
| Width | 8.40" (213.36 mm) |
| Depth | 1.90" (48.26 mm) |
| Weight (Approximate) | 2.13 lb (968 g) |
| Miscellaneous | |
| Energy Star | Yes |
User Manual
FAQ
How many phone lines does the Cisco 9851 support?
The Cisco 9851 IP Phone supports 6 total SIP lines, allowing multiple concurrent calls for reception areas, shared workspaces, or small business environments requiring efficient call management.
Does this phone support Power over Ethernet?
Yes, the Cisco 9851 includes PoE support through its RJ-45 ports, enabling both data and electrical power transmission over a single network cable. This simplifies installation by eliminating the need for a separate power adapter in PoE-enabled network setups.
What type of screen does the Cisco 9851 have?
This phone features a 3.7" LCD screen that provides clear visual feedback for call information, directory access, and system status. The display supports essential telephony functions in a compact format suitable for desktop use.
How many network ports are available on this IP phone?
The Cisco 9851 includes two RJ-45 network ports. This dual-port configuration allows daisy-chaining to connect additional devices like computers without requiring extra switch ports, providing deployment flexibility in office environments.
Does the Cisco 9851 have USB connectivity?
Yes, the phone includes a USB port with power delivery support. This enables connectivity for accessories or peripheral devices, expanding functionality beyond basic telephony features.
What color is the Cisco 9851 IP Phone?
This model comes in First Light color, offering a neutral, professional appearance that blends well with various office decors. The desktop form factor and color scheme make it suitable for business environments.
How many SIP lines or accounts does this phone support?
The listed telephony detail is 6, which helps buyers confirm deployment fit for desk-phone and unified-communications environments.
Does this model support PoE?
The listed telephony detail is Yes, which helps buyers confirm deployment fit for desk-phone and unified-communications environments.
| Qty | Price | Available |
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