On Tue, Jan 5, 2010 at 2:06 PM, Anthony Minessale <anthony.minessale@gmail.com> wrote:
depends,
some telco actually expect you to react to this tone for hangup and charge you for real hangup signaling which is probably the case here.

Example: CenturyLink charges $5 per line per month for "disconnect after hangup." No joke. It's an actual "feature" that they "sell" to the people using their analog lines. I'm sure other scumbag telcos do the same thing.

-MC