asterisk users - May 2006 - clicking and popping with capi, okay with mISDN

I have a hfc-usb adapter connected to a Samsung PBX, and am having a bit
of trouble.

With capi, using 'immediate' mode, I can get the dialplan working just
fine, except that there is some sort of interference in the audio, and
I'm not quite sure how to describe it except that it's sort of like
clicking and popping but not harsh at all, and more like just bits of
audio missing.

With mISDN, I can never detect digits in immediate mode, and can only
ever receive 2 digits when not in immediate mode. When I did rig it up
to actually make a call, the audio sounded very clear.

The audio problems are when making any calls from the PBX via asterisk,
mostly to a mynetfone account I've just set up. Using SIP to the same
destinations is perfect. Our internet link is a lightly loaded unframed
E1 (2mb symmetric)

I've tried a few versions of mISDN, and a few versions of chan_misdn
(now using 0.4.0-rc2). chan_capi is cm-0.6.5, asterisk is 1.2.7.1.

Any suggestions would be greatly appreciated!

Thanks

James

Just noticed that the poor audio quality only occurs when the call goes
out via SIP. If I go straight to voice mail or something it's fine.

Does that ring any bells?

Thanks

James
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-
> bounces@lists.digium.com] On Behalf Of James Harper
> Sent: Thursday, 1 June 2006 10:25
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: [Asterisk-Users] clicking and popping with capi, okay with
mISDN
> 
> I have a hfc-usb adapter connected to a Samsung PBX, and am having a
bit
> of trouble.
> 
> With capi, using 'immediate' mode, I can get the dialplan working
just
> fine, except that there is some sort of interference in the audio, and
> I'm not quite sure how to describe it except that it's sort of like
> clicking and popping but not harsh at all, and more like just bits of
> audio missing.
> 
> With mISDN, I can never detect digits in immediate mode, and can only
> ever receive 2 digits when not in immediate mode. When I did rig it up
> to actually make a call, the audio sounded very clear.
> 
> The audio problems are when making any calls from the PBX via
asterisk,
> mostly to a mynetfone account I've just set up. Using SIP to the same
> destinations is perfect. Our internet link is a lightly loaded
unframed
> E1 (2mb symmetric)
> 
> I've tried a few versions of mISDN, and a few versions of chan_misdn
> (now using 0.4.0-rc2). chan_capi is cm-0.6.5, asterisk is 1.2.7.1.
> 
> Any suggestions would be greatly appreciated!
> 
> Thanks
> 
> James
> 
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