VoIP Phones

Cisco 6851 VoIP Phone

Q: What is the main advantage of the Cisco 6851 over the 6841?

The standout feature of the 6851 is Power over Ethernet (PoE) support . This allows the phone to draw power directly from your network switch through the Ethernet cable, eliminating the need for a bulky power brick and keeping your desk cable-free. (Note: A standard power adapter is still supported for non-PoE setups).

Q: How does the Cloud Phonebook work on this model?

The 6851 acts as a live window into your NUACOM Directory . Instead of managing a static list of numbers, the phone fetches your contacts in real-time from the cloud. This ensures that whether you are searching for a new lead or a long-term client, the information is always the most current version available in your NUACOM portal.

The Enterprise-level VoIP Phone just got even better. Meet the new Cisco 6851 with an option for adding an extension board.

Technical Specifications:

Gigabit: A 10/100/1000 BASE-T Ethernet connection through two RJ-45 ports.
Display: White backlit, grayscale, 3.5-in. (9-cm) 396 x 162-pixel display.
Speaker: Full-duplex speakerphone.
Can be wall-mounted using the optional 6800 Series wall-mount kit (sold separately).

Frequently Asked Questions

What is the main advantage of the Cisco 6851 over the 6841?

The standout feature of the 6851 is Power over Ethernet (PoE) support. This allows the phone to draw power directly from your network switch through the Ethernet cable, eliminating the need for a bulky power brick and keeping your desk cable-free. (Note: A standard power adapter is still supported for non-PoE setups).

Can the Cisco 6851 handle more than 4 lines?

While the base unit features 4 programmable line keys, the 6851 is built for high-volume users. It is the only model in this series that supports the Cisco IP Phone 6800 Key Expansion Module (KEM). By adding this sidecar, you can gain 14 additional physical buttons (across two pages for a total of 28 extra keys) for advanced call monitoring.

How does the Cloud Phonebook work on this model?

The 6851 acts as a live window into your NUACOM Directory. Instead of managing a static list of numbers, the phone fetches your contacts in real-time from the cloud. This ensures that whether you are searching for a new lead or a long-term client, the information is always the most current version available in your NUACOM portal.

Can I use a headset for hands-free calling?

Yes, the 6851 is designed for heavy phone users and includes a dedicated RJ-9 headset port. It is compatible with professional-grade wired headsets and supports Electronic Hook Switch (EHS) cables, giving you the freedom to answer and end calls directly from your wireless headset.