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Video 20: How to Set-up a Snom VoIP Phone

This video instructs you on administering, assigning an extension, and registering a Snom phone to your PBX.

1. Browse to your Snom phone’s web admin page > Select “Advanced” from the side menu (Located under “Setup” (left side of the screen) ) > Select the “SIP RTP” tab

  • Enter your local SIP port name in the “Network identity (port)” text field

2. Select “Identity 1” from the left menu bar under “Setup” to configure your line on the Snom phone

  • Enter the name that you want to appear on the phone in the “Displayname” text field
  • Enter the extension for the phone in the “Account” text field
  • Enter the “secret” from your DIYPBX secret key in the “Password” text field
  • Enter the ip address of your DIYPBX server in the the “Registrar” text field

3. Select the “SIP” tab (top of your screen)

  • Set your expiration down to “60”seconds in the “Proposed Expiry” text field
  • Enter “60” to set the expiration down to 60 seconds in the “Subscription Expiry (s)” text field.

This step reduces the time your phone registers with the server (which can help overcome NAT issues), especially if you have an active firewall that is frequently opening and closing ports.

4. Select the “RTP” tab (top of your screen)

  • Under “RTP Identity Settings” in the “Codec” text field you will notice that your Snom phone comes with a list of codecs. Many of the default codec entries listed require a licence.
  • This template of FreePBX at DIYPBX.com and asterisk systems (in general) do not come equipped with the additional licenses required to use these other codecs.
  • Delete all the codecs in the “Codec” text field EXCEPT “psmu,gsm,telephone-event” (‘telephone-event’ is the DTMF tones that you want the phone to use)
  • Select “on” radio button for “Full SDP Answer”
  • Select “off” radio button to disable “RTP Encryption”

5. Browse to your FreePBX admin screen > Select “Asterisk Log Files” module

  • Review the latest call log “WARNING” and “VERBOSE” entries.
  • The command line will display: “Failed to receive an SDP offer/answer with required SRTP crypto attributes for audio” (this tells you that the RTP is still encrypted).
  • Turning off “RTP Encryption” in step 4 will address these warning errors.
  • Also displayed are audio errors “ licensing mismatch / codec mismatch errors”
  • Removing the codec entries from the “Codec” text field (and keeping only the 3 mentioned) in step 4 will address these audio errors.

6. Select “Peers” (right side of your screen)

  • The status will indicate “Yes” for a properly configured phone.

You should now be able to make and receive a phone call with your Snom phone using your PBX.

How do you reset the password on a Snom phone?

  • Press the Settings Key
    • (firmware <7.x) Select “Admin Mode”
    • (firmware >=7.x) Enter “Maintenance”, select “Admin Mode”
  • Enter your admin password, or the default password of “0000”
  • The phone will now reboot
  • “Reset” the lost HTTP password in your phone’s user interface
  • Reset the admin and HTTP password via TFTP Update