[Asterisk-Dev] A pipe length tester for TDM400 cards

[alex at pilosoft.com]

On Fri, 17 Jun 2005, Kris Boutilier wrote:

> Steve, how plausible would it be to modify this code to run against
> Asterisk itself, to be able measure the effective endpath of an
> established channel? Ie. a call that has been placed
> (ast)<-[zap/PRI]->(pbx)<-(analog)->(handset).
> 
> I have some digital cordless phones on my network and they're producing
> an acoustic echo inside the handset the tail length of which, presumably
> due to the cordless aspect, is longer than the 64ms hardware echo
> canceller I'm using between Asterisk and the PBX. What I'm thinking is
> that your model would allow me to measure conclusively how long the
> actual endpath is and thus be able to size a replacement echo canceller
> accordingly.
Hopefully, once Steve gets done with g.168 (please pretty please :) the 
data could be easily extracted from the g.168 circuit model :)