We do something similar, but we convert to WAV49 or GSM, about 1/9th the
size of the original. This conversion is faster and less CPU intensive
then using lame for MP3 and gives about the same space saving, though
the audio is not quite as good.
In high volume we utilize a dedicated box which retrieves the
recordings, then converts and stores on an audio delivery server, so
only load on PBX is the file transfer off. All done using perl and sox.
For the WAV to GSM conversion you just execute:
sox -r 8000 -c 1 -s -w Infile.wav Outfile.gsm
Mike
Michael Potocki wrote:
Thats what we do through the call center we have built.
We run in 1.4 and use mixmonitor, when the conversation ends, it runs
a script using LAME and converts it to telephone quality mp3. Checks
that the mp3 was built then removes the .WAV file from the system.
Average file reduction size is greater then 90% of wave file.
We are not at the call level that you are suggesting but we have not
had an issue with this type of setup (we once had 12 seats running for
12 hours a day for 2 weeks without an issue).
Michael
Bruce Nik wrote:
Hi Guys,
For those who deployed Asterisk system for call centers, how do you
go about recording everything? Let's say it's needed to keep records
of conversations for 2 years on 40 extensions working two shifts a
day (16 hours). I am just giving the worst case scenario but it's
better to be prepared for it. Doing RAID1+0 almost 20TB is needed to
record all conversations using the default record format with
Elastix. What can be a work around for this? Even 10TB is I think too
much.
Do you suggest to run a script to convert to mp3?
Thanks,
Bruce
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