Cisco IP Phone 8851 - VoIP-Telefon - SIP

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Product details

The Cisco IP Phone 8851 is a powerful VoIP phone designed for modern communication needs. It offers a variety of features that enable efficient and clear voice transmission. With support for multiple VoIP protocols, including SIP, RTP, and SRTP, this phone ensures a secure and reliable connection. The ability to manage up to five SIP accounts makes it ideal for use in business environments where multiple lines are required. The device is wired and uses Ethernet for signal transmission, ensuring a stable connection. The hands-free function allows for convenient use, while the appealing design in charcoal color seamlessly fits into various office environments. The Cisco IP Phone 8851 is a refurbished unit that still meets high performance standards and provides a cost-effective solution for businesses.

  • Support for multiple VoIP protocols: SIP, RTP, SRTP
  • Management of up to five SIP accounts
  • Wired signal transmission via Ethernet
  • Integrated hands-free function for comfortable calls.

Key specifications

Phone type
VoIP phone
Phone connection
Ethernet
Phone Features
Call waiting, Hands-free kit

General information

Item number
60082331
Manufacturer
Cisco
Category
Phones
Manufacturer no.
CP-8851-K9-RF
Release date
12.7.2025

Colour

Colour
Black, Grey
Exact colour description
Black

Phone properties

Phone type
VoIP phone
Phone connection
Ethernet
VoIP protocol
RTCP, RTP, SDP, SIP, SRTP
Signal transmission
Cable
Phone Features
Call waiting, Hands-free kit
PoE Standard
802.3af (PoE), 802.3at (PoE+)

Connections

USB ports
USB-A
Wireless transmission
Bluetooth

Display properties

Image resolution
800 x 480 pixels
Display size (inches)
5"

Origin

Country of origin
China

Scope of delivery

Scope of delivery
1 piece

Product dimensions

Length
40 mm

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Phones» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 12.Snom
    1.3 %
  • 12.Ubiquiti
    1.3 %
  • 16.Cisco
    1.5 %
  • 16.Yealink
    1.5 %
  • 18.Geemarc
    1.9 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Cisco
    Not enough data
  • 1.Alcatel
    0 days
  • 1.amplicom
    0 days
  • 1.Gigaset
    0 days
  • 1.Grandstream
    0 days

Return rate

How often is a product of this brand in the «Phones» category returned?

Source: Digitec Galaxus
  • 19.Maxcom
    9.9 %
  • 20.Ubiquiti
    10.7 %
  • 21.Cisco
    15.2 %
  • 22.Avaya
    15.3 %
  • 23.Telekom
    18.7 %
Source: Digitec Galaxus