asterisk users - Jan 2006 - detect when grab up the phone

Does Asterisk has any way to detect when the destine grabs up the phone,
via SIP protocol. I need this in order to start a radius event.

If this can't be done, I would like to know is there is any extension,
or software that can accomplish what I need.

Thanks, in advance..

Wile

On Wed, 18 Jan 2006, Wile wrote:
> Does Asterisk has any way to detect when the destine grabs up the phone,
> via SIP protocol. I need this in order to start a radius event.
> 
> If this can't be done, I would like to know is there is any extension,
> or software that can accomplish what I need.
> 
> Thanks, in advance..
Do you mean to know in Asterisk immediately the SIP phone is picked up to 
dial?

Usually Asterisk doesn't know anything until the INVITE arrives when the 
user has dialled.

Perhaps you can configure your phone to an "immediate" or hotline mode
where it dials Asterisk immediately the handset is picked up?  Then you 
can setup Asterisk to play dialtone and accept the number.

Steve