I have QX50 and have 2 FXO lines attached to it.

I created a Call Queue in extension 2112 and I need to have it so that when extension 2112 is busy, the next caller goes into the queue... the problem is that it only works with calls from other extensions, but if I call from the the PSTN lines, the second call just gets a "Number dialed temp unavailable..."

I don't know what I'm doing wrong...