Re: [Ekiga-list] Looking for Quicknet card SIP client
- From: Derek Smithies <derek indranet co nz>
- To: Ekiga mailing list <ekiga-list gnome org>
- Subject: Re: [Ekiga-list] Looking for Quicknet card SIP client
- Date: Sat, 15 Nov 2008 08:33:22 +1300 (NZDT)
You mention the IXJ driver.. Which implies linux..
I worked on a rewrite of the IXJ driver and called it nixj.
IXJ contains horrible races, and is not SMP safe.
IXJ has been ported to the 2.6 kernel series. I think it is fair to say
that the driver has been ported to the 2.6 kernel api, but not tested.
If you want to use nixj - you will do best with redhat 9.0 kernel..
nixj was developed on rh9.
the quicknet cards were horrible for sound quality. They did not have the
dynamic range of a normal sound card.
I was once involved in a commercial project with quicknet cards. The
cards were connected to an external mic&speaker.
Users had to be careful to speak at the right volume. too loud or too
quiet - and the card did not pick up the audio, or garbled it.
Replaced quicknet cards with cheap sound cards - much better.
Users could whisper - or shout - and the audio still got through..
So - why do you want to use quicknet cards?
*Ability to do g729 or g723?
Get a software codec - they are available for linux.
*Ability to do DTMF decoding?
The cards were not reliable - I had cases where it gave an answer
that was 1 less than correct..
ptlib has dtmf detection routines that work just fine.
One last thing:
The card does not generate interrupts. The driver has to busy check for
audio packets from the card. You will get gaps in the audio.
I am sorry, but quicknet is a bad way to go. Very Very Very Very bad.
On Fri, 14 Nov 2008, clif eugeneweb com wrote:
I've been looking for a somewhat current SIP client for the old Quicknet
cards which are still supported in the Linux kernel via the IXJ driver.
Ohphone still supports them but that is H323, and I would prefer to use SIP.
I see that once upon a time Ekiga/Gnomeeting had drivers for these cards,
could someone point me at that code or perhaps another sip project that still
supports them? I'm just looking for the endpoint SW not a PBX so Asterix
would be a little bit overkill for me.
Thanks a bunch,
ekiga-list mailing list
ekiga-list gnome org
Derek Smithies Ph.D.
IndraNet Technologies Ltd.
Email: derek indranet co nz
ph +64 3 365 6485
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