asterisk users - Jan 2010 - Help for MOH - sounding scratchy/static on hold

Hi All,

I tried using some music on hold (music) files, when I test it with normal
SIP phone its clear and good, but when I call from my cell phone or POTS
line it sounds a bit scratchy/static and not clear at all, is there any
software that i need to install in the asterisk system to make this music on
hold clear when using music files? (Where as the commercial that we record
from the phone and use it as message on hold then its clear when the call is
on hold, since its recording is compatible with asterisk: 8000Hz, 16 bits
PCM encoded).
My versions of asterisk: 1.4.18.1.

I appreciate your advices.

Thank you very much

Regards
Sandesh
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Mpg123 works well for us.  You have to get your files into mp3 format, but
LAME does this simply.

 

  _____  

From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of das sandesh
Sent: Friday, January 29, 2010 4:26 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Help for MOH - sounding scratchy/static on hold

 

Hi All,

I tried using some music on hold (music) files, when I test it with normal
SIP phone its clear and good, but when I call from my cell phone or POTS
line it sounds a bit scratchy/static and not clear at all, is there any
software that i need to install in the asterisk system to make this music on
hold clear when using music files? (Where as the commercial that we record
from the phone and use it as message on hold then its clear when the call is
on hold, since its recording is compatible with asterisk: 8000Hz, 16 bits
PCM encoded).
My versions of asterisk: 1.4.18.1. 

I appreciate your advices.

Thank you very much

Regards
Sandesh

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Sandesh-
> I tried using some music on hold (music) files, when I test it with normal
> SIP phone its clear and good, but when I call from my cell phone or POTS
> line it sounds a bit scratchy/static and not clear at all, is there any
> software that i need to install in the asterisk system to make this music
on
> hold clear when using music files? (Where as the commercial that we record
> from the phone and use it as message on hold then its clear when the call
is
> on hold, since its recording is compatible with asterisk: 8000Hz, 16 bits
> PCM encoded).
> My versions of asterisk: 1.4.18.1.
Is there any difference in your POTS line vs. cell quality?  As you may know,
cell phones typically use some type of
voice codec (GSM-AMR, EVRC, etc) that can reduce quality of non-speech audio
(e.g. music).

But the POTS line should sound fine, unless you sent it first through a carrier
IP route using compression (such as
G729).

-Jeff