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Snom 300

You do not need to dial any numerical prefix before dialing an extension or external number. Simply dial the extension or 10 digit number.

Call Forwarding

1. Press the up arrow key to access Settings.

2. Select Call Features > Call Forwarding.

3. Activate the desired forwarding type.

  • All: Forwards all incoming calls.
  • Timeout: Forwards all unanswered incoming calls.
  • Busy: Forwards calls that arrive when you’re already in a call.

4. Enter the internal extension or external number to which calls will be forwarded.

5. If you selected Timeout, enter how many rings to wait before forwarding.

6. Press  to enable (to disable call forwarding, deselect Activate).

Do Not Disturb (DND)

Enabling DND stops your phone from ringing and sends all incoming calls directly to voicemail.  Calls are not logged in your Missed Calls.

This feature is only set up through the web utility. Please contact your system administrator to enable DND.

1. When the phone is idle, press the Line key to enable/disable.

Voicemail Access

1. Dial *99.

2. Dial your password (default 0000).

Speed Dial

1. Press the up arrow key to access Settings.

2. Select Preferences > Fkeys.

3. Enter extension or 10 digit phone number.

4. Press .

3-Way Calls

1. Press the Line key to place the current call on hold.

2. Dial the internal extension or external number to add to the conference and press .

3. Wait for the second party to answer, and then let them know that you would like to add them to a 3-way call.

4. Select Cnf.On.

Warm Transfer

Places a current call on hold and allows you to speak with the other party before transferring the call to them.

1. Press the Line key to place the current call on hold.

2. Dial the internal extension or external number.

3. Press  to speak with the destination party.

4. Select Transfer.

Blind Transfer

A blind transfer routes a call to another party without speaking to them first.

1. While on an active call, press the Transfer key.

2. Dial the internal extension or external number.

Tip: To transfer a call directly to voicemail, dial 0 + extension.


1. Press the Line key.

2. Press the Line key to retrieve the call.

Modify Ringtone

1. Press the up arrow key to access Settings.

2. Select Preferences > Ringer.

3. If there are multiple lines assigned to the device, select the line you wish to modify.

4. Select the desired ringtone (highlight to sample ringtones).

5. Press .

Note: This device does not support silent ringtones.

Presence Monitoring

In order to presence monitor, you must have the feature enabled on your device by an administrator. If not enabled, contact your system administrator for assistance.

Note: The lines that you wish to monitor must be speed dial assignments on your phone.

*Softkeys are buttons located around the display whose function changes depending on the context. These keys are managed by your system administrator.

See a feature you don’t understand? See our phone feature glossary.

Call Handling Features

  • Warm Transfer
  • Blind Transfer
  • Do Not Disturb (DND)
  • Call Forward All
  • Call Forward Busy
  • Call Forward No Answer
  • Intercom (* + ext)
  • Hold
  • Reject
  • Multi-way Calling
  • Anonymous Call Rejection
  • Call Waiting
  • On-hook Dialing
  • Speakerphone

User Interface Features

  • Call Logs
  • LDAP Directory
  • On Device Directory
  • Adjustable Ringer Volume
  • Electronic Hook Switch (EHS)

Feature Keys

  • 4 SIP Accounts
  • Dedicated Line Keys
  • 6 Lower Multifunction Keys*
  • 2 Physical Line Keys

*Supports line assignments.

  • Mute Button
  • Voicemail Button
  • On-device Speed Dial Edit


  • Black & White Display
  • Message Waiting Indicator (MWI)
  • Busy Lamp Field (BLF)
  • Caller ID (CID)
  • Time/Date Display
  • On-Screen Message Display

Network & Provisioning

  • On Device Ethernet (PoE)
  • PC Connection
  • Cisco Multicast
  • Web Interface Provisionable


  • Wired Headset

Before you begin:

  1. Verify a device profile has been created.
  2. Verify the phone’s MAC address has been assigned to the device profile.

1. Press the up arrow key to access Settings.

2. Select Information System Info.

3. Open an incognito window in Google Chrome, type the IP address into the address (URL) bar, and then press Enter on your keyboard.

Note: If you are prompted to enter a password, contact Customer Support for assistance.

4. Select Advanced > Update tab.

5. Define the following settings:

Update Policy

Update automatically

Setting URL


Note: Replace ‹domain› with your unique domain (found in parentheses at the top of the admin dashboard).


7. Press Apply > Reboot > Yes.

Note: If the phone does not automatically reboot, you must power cycle the device to apply its provisioning settings.

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