[asterisk-users] Playing mp3-files – will it b e OK?

2008-04-24 Thread harry
Hello

99% of all my users are calling from GSM phones, and my system
basically just plays some sound files back.

The PBX is connected to an ISDN-30 connection. Are there any modules
for playing MP3 files, so I can use them with commands like Play() and
Background()?

And will it have any effect on the quality?

Load issues should be a problem, the number of concurrent calls are pretty low.

Thanks

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Re: [asterisk-users] Playing mp3-files – will it b e OK?

2008-04-24 Thread Steve Davies
2008/4/24 Jared Smith [EMAIL PROTECTED]:
 On Thu, 2008-04-24 at 17:50 +0200, harry wrote:
   The PBX is connected to an ISDN-30 connection. Are there any modules
   for playing MP3 files, so I can use them with commands like Play() and
   Background()?

  If I were you, I'd transcode the files to alaw and play back the alaw
  version, so that Asterisk doesn't have to transcode them for every call
  (which is a waste of CPU cycles).

  If you *really* want to use MP3 files, you'll need to load the
  format_mp3 module from asterisk-addons package.

You will also need to take into account that the music will be GSM
compressed by a GSM mobile network, and that gives reasonably poor
results in must cases. Over ISDN, the results are excellent.

Regards,
Steve

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Re: [asterisk-users] Playing mp3-files – will it b e OK?

2008-04-24 Thread Noah Miller
Hi Harry -

  99% of all my users are calling from GSM phones, and my system
  basically just plays some sound files back.

  The PBX is connected to an ISDN-30 connection. Are there any modules
  for playing MP3 files, so I can use them with commands like Play() and
  Background()?

See asterisk-addons for the mp3 module.


  And will it have any effect on the quality?

The callers should hear the file at the codec-quality of the channel
they're connecting on.  So for your ISDN callers, that's probably ulaw
or alaw, and for the internal phones, GSM.


- Noah

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