UBIK Blog | Introduction to the 6851 phones
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Introduction to the 6851 phones

Here's a short guide to help you familiarize yourself with one of the new phones provided by UBIK, the Cisco 6851. If you use phones from another brand (UBIK is compatible with most SIP phones), please refer to the manufacturer's user guide.

For Cisco 8800 series models, refer to this guide.

If you are using older Cisco SPA500 series models, refer to this guide.

Cisco 6851

Cisco 6851 looking sharp.

The Cisco 6851 is one of two new Cisco phones offered by UBIK. Tested and approved by UBIK technicians, these phones are modern, safe and reliable at a reasonable price.

Introduction to phone lines and buttons

The full user guide is available here.

Cisco 6851
Feature Description
1 Handset and Handset light strip Indicates whether you have an incoming call (flashing red) or a new voice message (steady red).
2 Programmable feature buttons and line buttons Programmable feature and line buttonsAccess your phone lines, features, and call sessions.
3 Softkey buttons Softkey buttonsAccess functions and services.
4 Navigation cluster Navigation cluster and Select Navigation clusterbutton. Scroll through menus, highlight items, and select the highlighted item.
5 Hold/Resume, Conference, and Transfer Hold/ResumeHold/Resume buttonPlace an active call on hold and resume the held call.
ConferenceConference buttonCreate a conference call.
TransferTransfer button Transfer a call.
6 Speakerphone, Mute, and Headset SpeakerphoneSpeakerphone button Toggle the speakerphone on or off. When the speakerphone is on, the button is lit.
MuteMute button Toggle the microphone on or off. When the microphone is muted, the button is lit.
HeadsetHeadset button Toggle the headset on. When the headset is on, the button is lit.
7 Contacts, Applications, and Messages Contacts Contacts button Access personal and corporate directories.
ApplicationsApplications button Access recent calls, user preferences, phone settings, and phone model information.
MessagesMessages buttonAutodial your voice messaging system.
8 Volume button Volume buttonAdjust the handset, headset, and speakerphone volume (off hook) and the ringer volume (on hook).

Phone maintenance

IP phones are electronic devices that should not be exposed to excessive heat, sunlight, cold, or water. To clean your phone, wipe with a damp paper towel. Do not spray or pour cleaning fluid directly on the phone.

Installing your phone

Before you get started

Before installing and connecting your phone, contact your system administrator to confirm that the phone can be installed on your network, read the safety notices and make sure you have all the phone parts and documentation.

Phone connections

Phone connections are shown below.

Cisco 6851 connections

Cisco 6851 connections.

Connecting the handset


1. Turn the phone body over to expose the ports on the back of the device. CAUTION: Do not insert a telephone line cord into the auxiliary (AUX) port.

2. Insert the long end of the phone cord into the handset port on the phone body (marked with a phone symbol).

3. Route the telephone cord through the cord run.

4. Insert the other end of the phone cord into the port at the bottom of the handset (not shown).

Connecting the power

If you are using an external power source, insert one end of the power cord into a wall outlet and the other end of the cord in the phone’s power port.

Connecting your phone to the network


1. Insert one end of the Ethernet cable into the network port on the RJ-45 phone port (marked “SW”)

2. Insert the other end of the Ethernet cable into the appropriate device on the network, such as a network switch or wall outlet.

Connecting a PC to your phone (optional)


1. To provide network access to a PC, connect one end of an Ethernet cable (not provided) to the PC port on the back of the phone body.

2. Connect the other end of the Ethernet cable to the RJ-45 port on your PC.

Phone startup

After receiving power and network connectivity, the phone executes a boot-up sequence.

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