[Asterisk-Users] monitor peak channel use

[Damon Estep]

Is there a way to trigger an action when a certain number of zap
channels are in use, or is there a variable that stores max used
channels that can be read?

I use PRI for inbound calls, but outbound goes out via SIP, so the
simple solution does not work.

I need to know when the potential exists for inbound calls via
PRI/Wildcard to be blocked because there are no more channels.

Obviously asterisk would never know, since the call is blocked at the
Telco, or is there still d-chan activity?

Anyone know of a way to do this?

Thx.