Convert your audio files online to a format supported by Asterisk, Cisco, and other VoIP systems. Simply upload your audio file and download the new copy!
Frequently at work and at home I need to convert audio files into a compatible format to use with either Cisco Call Manager, Contact Center, or Asterisk for your MOH (message on hold), IVR (interactive voice response), and other types of pre-recorded messages. Most methods you’ll find on the internet are tutorials involving audacity, but I developed this tool to offer a very simple yet flexible solution to getting any format of audio file you may have converted into a compatible format for whichever type of VoIP phone system you may be using.
In the form below, you can upload an audio file and download a converted copy in a format compatible with your phone system. Supported formats include WAV, GSM, ULAW, ALAW, G722, and SLN. I’ve tested the default WAV format in call manager and asterisk and it plays in most media players so it is what I would recommend. The WAV is actually a ulaw encoding with a wav extension, but everything seems to like it. The FFmpeg command used to perform the conversion on another system will be displayed should you choose to do so.
- Compatible with any input FFMPEG supports
- Supported formats include WAV, GSM, ULAW, ALAW, G722, and SLN
- All output formats are single channel (mono) with an 8kHz sample rate and 64kbps Bitrate (except GSM which is 13kbps and asterisk wav is 128kbps)
- No tools to download
- No tutorials or complicated instructions to follow
- See what your recording sounds like over the phone
Please leave a comment if you found this tool useful. I’d also like to hear from you if you experience any issues, if you’d like me to support additional output formats, or if you have any other feature requests. Happy encoding!