You may choose a melody for a client to hear waiting for an answer of your employee. The file should be less than 10MB, in MP3, OGG or WAV formats. After loading the file to the VPBX, the greeting will be converted to RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 8000 Hz. We recommend you to reach the best sound in this format. Please note that music works for the calls to a department. If clients call to employees, they will hear standard beeps.