[Asterisk-Users] FXO Cards in Australia

[Gonzalo Servat]

On Mon, 2003-11-17 at 23:53, Adam Goryachev wrote:
> Yes, echo problems do still exist, I would suggest testing it before
> going live.

Yeah, so I've heard.

> A couple of points to note:
> 1) Using soft phones seems to compound the issue

So the echo problems are not so bad when using software phones?

> 2) A faster CPU seems to help (I upgraded from a PII300 to a Athlon
> 2200)
> 3) When dialling in/out over the ISDN DTMF won't work (at least I
> haven't seen the patch which purportedly allows it to work) when you use
> the isdn4linux patch.

This is specific to the NetJet card once again, right? Time to go
hunting for the patch...

> 4) Without the above kernel patch you will hear DTMF tones instead of
> the other persons voice when they talk. They don't hear the tones or
> notice anything wrong.

Hmm, not good. Since we want to run a small IVR the DTMF tones are kinda
needed.

> In short, if you can live with the above problems, then you can get away
> with it, from what I know now, I would suggest getting a chan_capi
> capable device, though I haven't tried that yet.

The NetJet is supposedly CAPI capable. Have you tried installing this?
--> http://www.junghanns.net/asterisk/page1.html

> I am about to switch from a netjet card to a TE4xxP card as soon as
> possible, I have a OnRamp 10 being installed tomorrow. This is largely
> to increase the number of incoming lines, but partly to resolve the
> above issues, and also partly to try to resolve long running reliability
> issues which may in fact be related to the TDM400P anyway. In which case
> I will be looking for a T1 channel bank some time soon :(

Argh, the fun never stops :)

> PS, I have a brand new Traverse Netjet card available (it was to be used
> for a dial-up ISDN internet account) which is no longer needed.

How much do you want for it? If you can confirm whether the capi channel
driver works with it and reduces the echo problem, I'll be interested.

Thanks for your help.

Regards,
Gonzalo