[Asterisk-Users] Noisy/Clicky hangup

[Matt Lawson]

When I call in from an outside POTS line to a Zap channel, and the call 
ends, it seems like the hangups are very "sloppy."  I see Asterisk give 
the hangup command, but on my phone there's lots of clicks and the line 
acts like it's staying open for several seconds, then I hear a phone 
ringing sound followed by "If you'd like to make a call, please hang up 
and try again..."

Is there something wrong with my setup that it acts this way, or is that 
just "how it is?"

Thanks