FAQ/How do I apply customized ringer melodies and what is the required format

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Answer

Configuration

Change the following settings on the phone┬┤s web interface:

  • Identity/Line X page --> Login: Ringtone: choose Custom Melody
  • Identity/Line X page --> Login: Custom Melody URL: HTTP URL pointing to an appropriate wav file, i.e. ''http://downloads.snom.com/documentation/melody1.wav''
  • Preferences page -> Address Book Ringtones -> Custom Melody URL: HTTP URL pointing to an appropriate wav file, i.e. 'http://downloads.snom.com/documentation/melody1.wav''


Requirements

The wav file should comply to the following requirements:

  • Encoder: PCM, 8 KHz, 16bit mono.
  • The time for loading the file should not be longer then 3 seconds.
  • Size < 250 KByte depending on the available free memory of the phone. On snom 3xx device might be < 150 KByte.

On Linux/Unix you can use the tool ffmpeg to convert a sound file

ffmpeg -i <infile.(wav/mp3)> -acodec pcm_alaw -ac 1 -ar 8000 <outfile>.alaw.wav

Note: if the resulting melody sounds weird you can try without the extra encoding by removing parameter -acodec pcm_alaw:

ffmpeg -i <infile.(wav/mp3)> -ac 1 -ar 8000 <outfile>.alaw.wav
Ringtone Generator
http://snom.provoip.co.uk/ringtone/generator/
Note

If your custom melody melody is not played as expected, it might mean that your provider is sending another melody URL in the Alert-Info header of the SIP INVITE message. Try setting the following setting to 'off': Advanced -> Audio -> Alert Info playback

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