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ichverstehe at gmail.com Guest
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Posted: Thu Apr 24, 2008 10:50 am Post subject: [asterisk-users] Playing mp3-files – will it be OK? |
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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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noahisaacmiller at gma... Guest
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Posted: Thu Apr 24, 2008 11:07 am Post subject: [asterisk-users] Playing mp3-files – will it be OK? |
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Hi Harry -
Quote: | 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()?
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See asterisk-addons for the mp3 module.
Quote: | And will it have any effect on the quality?
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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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davies147 at gmail.com Guest
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Posted: Thu Apr 24, 2008 11:10 am Post subject: [asterisk-users] Playing mp3-files – will it be OK? |
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2008/4/24 Jared Smith <jsmith at digium.com>:
Quote: | On Thu, 2008-04-24 at 17:50 +0200, harry wrote:
Quote: | 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()?
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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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