I had been using a generic x100p card for a few months with mixed results - echo was a problem, though tweaking the rx/tx gain settings and recompiling asterisk with alternate echo detection algorithms did help some. I recently purchased a Sipura spa-3000 and reworked asterisk to use it instead and have been very happy with the results - though, like yourself it was budget concerns that held me back for a while. The clarity is noticeably better using the spa-3000 and echo is not a problem at all. The only issue is I had to add a delay from answering the pots line before passing the call to asterisk so that Caller ID information is passed along, only a minor inconvenience.
As for tweaking for the background noise, I wouldn't be surprised if you could improve things by adjusting the echo cancellation settings in zapata.conf. Perhaps toggling the echocancelwhenbridged parameter from yes to no or no to yes and see it improves. -- sacha On 1/26/06, Tony Cowling <[EMAIL PROTECTED]> wrote: > > Hoping you can help. > > > > I have a couple of x100p generic cards in place, one of which is hooked to > my vonage line. > > > > I notice if you call the vonage number and get passed to voice mail on the > asterisk server there is a lot of back round noise. > > > > It would appear that the noise is only there when the is no input sound > from the receiving end if this makes sence. > > > > For example if you have a normal conversation on the vonage line, the back > round noise seems to die down but if I where to stay silent the noise would > build up to a rather annoying level. It would seem that the vonage line > is somewhat to blame for this however it would seem that passing through the > * box seems to amplify it. > > > > Does the quality of the x100p have something to do with this? > > > > Is there anything that can be done to help cut down the noise somehow by > generating a small amount of input from * for example when no-one is > physically receiving the call? > > > > Looking forward to your replies. Tony. >
