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Telephony File Converter - G.711
Free online tool to convert MP3/WAV to G.711 u-law or a-law, G.722, or G.729 for BroadWorks, Asterisk, FreeSWITCH, CUCM, UCCX, and more! G711 File Converter This free tool will convert just about any DRM-free media file into audio that's compatible with most telephony vendors' Music on Hold and IVR Announcements.
G.711 Tool - ZNAK
http://www.znak.fi/user/pdonner/g711tool/
The application opens a Windows G.711 wave file, removes redundant header information, reverses the bit order and stores the result in a file of .alw or .ulw type (A-law and u-law). Similarly, raw data from an ISDN recording may be stuffed into a standard wave file and thus integrated into any multimedia oriented Windows application.
G.711 - Wikipedia
https://en.wikipedia.org/wiki/G.711
ffmpeg - send and receive G.711 RTP audio · GitHub
https://gist.github.com/fiddyschmitt/4e49019c8f10b267fb7f3284689f88c4
--to record microphone to mp3 ffmpeg -f dshow -i audio="Microphone (Logitech USB Headset H340)" -c:a libmp3lame -ar 44100 -b:a 320k -ac 1 output1.mp3 --send mic to rtp multicast g.711
StarTrinity Free VoIP recorder - freeware, G711+G729
http://startrinity.com/VoIP/VoipRecorder.aspx
G.729 and G.711 RTP frames are saved to WAV files to hard disk, recorded file name is saved into CDR. The recorder is free to use by commercial and non-commercial organizations. Performance: 1700 concurrent G.711 calls, 420 G.729 calls on a 4x3.5GHz i7, 8GB RAM server Here are steps to install the VoIP recorder:
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