asterisk users - Apr 2010 - SIP equivalent of zap "c" option

At the moment, we have a feature where if someone's sip extension is
called, we also make another call to their mobile. We use the "c"
option in the zap dialstring so that the user has to press "#" after
answering to confirm the call (this prevents things like the
answermachine grabbing the call if the mobile is switched off).

We are now looking to move towards a sip provider to take all of our
ISDN calls, so instead of using zap / isdn to call the mobile, we will
be routing the call over a SIP trunk. Is there any feature of SIP that
we can use in order to duplicate this functionality (i.e. have to
press # to confirm the call)

Thanks

Julian

Hi,

On Tue, Apr 13, 2010 at 03:37:37PM +0100, Julian Lyndon-Smith
wrote:
> At the moment, we have a feature where if someone's sip extension is
> called, we also make another call to their mobile. We use the "c"
> option in the zap dialstring so that the user has to press "#"
after
> answering to confirm the call (this prevents things like the
> answermachine grabbing the call if the mobile is switched off).
> 
> We are now looking to move towards a sip provider to take all of our
> ISDN calls, so instead of using zap / isdn to call the mobile, we will
> be routing the call over a SIP trunk. Is there any feature of SIP that
> we can use in order to duplicate this functionality (i.e. have to
> press # to confirm the call)
You could do something like this:

   http://www.voip-info.org/wiki/view/Asterisk+tips+findme

It works well for me. If I answer then hit "1" on my cellphone I 
get the call, otherwise it goes to Asterisk VM, and never to 
the cellphone VM.

[whatever]
....
exten => s,n,Dial(${EXT}&${CCME}&local/101 at internals,20,rt)
....

[internals]
exten => 101,1,Dial(${MARKCELL},30,tgM(screen))
exten => 101,n,Goto(main-menu,s,1)   ; if not answered and accepted

[macro-screen]
exten => s,1,Wait(0.5)
exten => s,n,Read(ACCEPT,followme/options,1,,1,20)
exten => s,n,GotoIf($["${ACCEPT}" = "1"]?yes:no)
exten => s,n(yes),Background(connecting)
exten => s,n,Goto(end)
exten => s,n(no),Set(MACRO_RESULT=CONTINUE)
exten => s,n(end),NoOp

Mark


-- 
Mark G. Thomas (Mark at Misty.com)
Web: http://mgtinternet.com/
Tel: +1-215-512-0112 US: 877-512-0112