[Asterisk-Users] Will Echo problems EVER be solved, I'm scared

[Rich Adamson]

> >> > Is it practical to 'assume' that in your case mentioned above that
> >> > #1 is not going to occur again (since I assume when you say 'line'
> >> > you are referring to an outside pstn line), and, #2 is in a mode
> >> > of fine-tuning the training when in fact you'd really like it to
> >> > start the coarse-training from scratch?
> >>
> >> Thanks Rich for the comments. Obviously you got my point. And I was 
> >> hoping
> >> that it is possible somehow to do #1 (coarse-training from scratch) after 
> >> a
> >> PSTN line is transfered to another phone or something very important 
> >> changes
> >> about a call. But considering how complicated a situation this might be
> >> (there is music on hold to say the least, or perhaps the transferee may
> >> reject the call and the call returns to the operator [in which case you
> >> wouldn't want #1], etc.) I guess this is not a simple task. Anyway, I'll
> >> keep on watching for a solution.
> >
> > The echo canceler preload happens shortly after the analog line is
> > seized. Since a call transfer does not open/close the pstn line again,
> > its not going to preload again. However, it should not have to anyway
> > since there hasn't been any electrical changes there.
> >
> > What type of phones are you using internal when you're transferring a
> > call?
> 
> The internal phones involved were both analog phones, i.e. Zap channels. 
> This problem happened once in the last 2 days (with KB1), so I'm not too 
> negative.

Are the analog phones connected to a TDM card, channel bank, or what?

cvs head or stable & version?