How to hangup without "answer" for pstn?

[system]

System environment: asterisk 1.6 + x100p

Following context works fine.
[from-pstn]
exten => s,1,Playback(vm-goodbye)
exten => s,2,Hangup()

After 2 rings, I hear goodbye voice, and then auto hangup.

However, if I use following context setting
[from-pstn]
exten => s,1,Hangup()

It keeps ringing and can’t hangup. How to hangup without “answer” for pstn? Thanks.

[mazzic]

Taking a stab here…you can’t hang up what you haven’t answered?

try…

[from-pstn]
exten => s,1,Answer()
exten => s,n,Hangup()

in your first example the playback command is issuing an answer since the line wasn’t already answered.

[system]

Actually what I want to implement is not “answer”, just “hangup” directly. What I mean is that when a call is incoming, asterisk “hangup/disconnect” it directly.

How to implement it? Thanks.

[system]

Try going to a non-existent priority:

[from-pstn] exten => s,1,Goto(99999)

[system]

I just tried goto(99999), same problem: keep ringing. please take a look at following asterisk console output, it looks that asterisk keeps trying to hangup, but failed.

[system]

Aghhhh, another case where the docs are out of sync:

If the location that is put into the channel information is bogus, and
asterisk cannot find that location in the dialplan, then the execution engine
will try to find and execute the code in the ‘i’ (invalid) extension in the
current context. If that does not exist, it will try to execute the ‘h’
extension. If either or neither the ‘h’ or ‘i’ extensions have been defined,
the channel is hung up, and the execution of instructions on the channel is
terminated. What this means is that, for example, you specify a context that
does not exist, then it will not be possible to find the ‘h’ or ‘i’ extensions,
and the call will terminate!

Try adding

exten => h,1,Noop

to your dialplan

[david55]

[quote=“totogogo”]Actually what I want to implement is not “answer”, just “hangup” directly. What I mean is that when a call is incoming, asterisk “hangup/disconnect” it directly.

How to implement it? Thanks.[/quote]

This is impossible on FXO lines. Hangup is done by going from a low DC resistance to a high one. Going the other way answer the call. I don’t know if there is a refuse protocol for common channel digital signalling (for which you will need digital presentation).

[system]

“exten => h,1,Noop” is added, same problem. Is there any configuration missing in chan_dahdi.conf file?

[david55]

This is a limitation of FXO lines, not of Asterisk.

What is the real world problem you are trying to solve by attempting to refuse a call without answering it?

(Incidentally, for many FXO lines, particularly domestic ones, even hanging up after answering will not release the line for several minutes - to allow the call to be picked up on another phone connected to the same line.)

[system]

Thanks. If I use GSM card with GSM gateway instead of FXO line, can it support “refuse call without answering” feature with asterisk?