[Asterisk-Users] SPA-3000 disconnect tone

[John Goerzen]

Hi,

I have a SPA-3000.  My telco sends no disconnect indication
whatsoever, so I am having trouble making the PSTN line detect
disconnect.

What I want it to do is detect the very loud off-hook tone that is
generated about 20 seconds after disconnect.  It's not perfect, but
it's a lot better than silence detection.  I noticed that the zaptel
drivers can detect this with busydetect, but the SPA-3000 can't seem
to.

I suspect I need a new value for the Disconnect Tone in the PSTN
configuration, but can't seem to concoct the magic potion.  Google and
various forums aren't helping out either.

Any suggestions?

-- John