[Asterisk-Users] Fun new problem with Aastra 390 ADSI phones

[Mark Spencer]

> > How quickly after off hook should an FXO device drop ring voltage to
> > normal line voltage?  It might possibly be this but I really don't
> > think these CAC banks would be that far out of spec.

It should happen immediately, but I have heard of some telephony equipment
which does very bad things (like burn up) when answering during the ring
itself.  That's why Asterisk only sends the event at the *end* of the
ring, not the beginning.

Mark