[Asterisk-Users] Caller Holds (how to ignore "Drop Call" events from callee?)

[Paulo Scardine]

Hi,

In Brazilian POTS, the caller holds the callee line hijacked - the call 
is not droped until de caller hungs up. I really don't know the right 
english term to describe this behavior.

My problem is that its most standard here, and there are a number of 
hacks that count on this. For example, to avoid collect calls, you can 
setup your PABX to pickup the call, hung and pickup again in the first 
1000ms (its called "double pickup"). If its a collect call, the telco 
will drop the call.

When I'm dialing (my setup is PSTN only) to some PABX that implements 
"double pickup", asterisk receives a "Drop Call" event and byebye...

How can I ignore "Drop call" events from the callee??

TIA,
--
Paulo Scardine