Re: [Asterisk-java-users] Listen for an incomming call to a sip/extension

[Wayne M. <way...@th...>]

Hi,

Normally you would loop through the channels until you find the 
extension you're looking at with channel.getCallerId().getNumber()

Then you can see if it is linked with another channel by 
channel.getLinkedChannel() and get the caller id from that in the same way.

If you're doing this in "real time", the way I do it is to register an 
AsteriskServerListener and then for every new channel add a 
PropertyChangeListener

You then need to figure out what type of events you want to listen to 
and which ones to ignore (hint you get a lot of events).

To help you narrow it down most likely all you need are the following:

public void propertyChange(PropertyChangeEvent evt){

   if(evt.getPropertyName().equals("state") && evt.getSource() instanceof AsteriskChannel){

     if(evt.getNewValue() instanceof ChannelState){

       ChannelState state = (ChannelState)evt.getNewValue();
       //Then look at state.getStatus() for things like RING or RINGING or HUNGUP or BUSY
       //You can get the channel in question by doing evt.getSource()

     }else if(evt.getPropertyName().equals("currentExtension") && evt.getOldValue() == null){

       //The evt.getNewValue() here will have an Extension object which you can use to see what this channel is ringing
       //Note you get a lot of dialplan messages here that you can skip, they're usually with a context of macro-auto-blkvm
       //but this varies depending on what Asterisk system you use

     }else if(evt.getPropertyName().equals("linkedChannel") && evt.getSource() instanceof AsteriskChannel){

       //You get these when two channels connect to each other e.g. when someone picks up a call
       //You will get at least two of these for both sides of the call

     }

   }

}


Hope this gets you started,

Wayne Merricks
The Voice Asia

On 14/04/14 14:15, Jorge wrote:
> How can I get from this event the phone that is callling this extension?
>
> I am looking in to  asteriskServer.getChannels(); but the channel is 
> not created when the status changed.
>
> Jorge
>
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> 2014-04-13 11:03 GMT+02:00 Miguel Santiago <m.s...@gm... 
> <mailto:m.s...@gm...>>:
>
>     I think you can Use ExtensionStatusEvent in order to know what you
>     need
>
>     El 10/04/2014 20:57, "Jorge" <gus...@gm...
>     <mailto:gus...@gm...>> escribió:
>
>         Hi:
>
>         I would like to know if it is possible to implement a listener
>         or check if a sip extension is busy with a call. And in case
>         it is answering a call how to know which number is calling.
>
>         Kind Regards
>
>         Jorge
>
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