Broadvoice codec information was once available at: https://www.broadcom.com/support/broadvoice/ Currently such page is not available anymore. However, you can find an old copy at web.archive.org For example: https://web.archive.org/web/20150224023215/https://www.broadcom.com/support/broadvoice/ The file COPYING was generated with the command: unoconv -f txt --stdout BroadVoice16.doc | sed '1s@^.@@;/Scope/,$d' >COPYING The file README is an extract from the page: https://web.archive.org/web/20150224023215/https://www.broadcom.com/support/broadvoice/