[asterisk-biz] auto-answering an originated call, dialplan / manager interface problem

Alex Balashov abalashov at evaristesys.com
Thu Nov 26 08:23:30 CST 2009


If you initiate an Originate and specify an outbound 
carrier/channel/technology as the 'Channel', the execution will be 
punted into the Exten, Priority and Context you specify when the call 
is answered on the far-end -- e.g. a SIP 200 OK.

For example, here's how I Rickroll people:

Action: Originate
Channel: SIP/5551212 at my_termination_carrier
Context: rickroll
Exten: 1
Priority: 1
Callerid: xxxxxxxxxx
Timeout: 30000


[rickroll]

exten => 1,1,Wait(1)
exten => 1,n,Playback(never-gonna-give-you-up)
exten => 1,n,Hangup


Their phone rings, they pick up, and about a second later, Rick croons 
at them.

-- Alex

Mueller, Alexander wrote:

> Hello, I try to initiate an outbound call via "ORIGINATE" (AMI interface), and I need to bring the phone that calls outbound to auto-answer, so that the user just has to press a button on the computer, not on the phone.
> 
> Problem: I have no chance to do anything inside the dialplan, the call is initiated without jumping into the dialplan as far as I can see in the logs. So for example "SIPAddHeader(Call-Info: answer-after=0)", which works perfect for Redirected calls, doesn't work. There seems to be nothing like SIPAddHeader in the AMI. I tried this, without success:
> 
> Action: Originate
> Channel: SIP/2000
> Exten: 001763802268
> Priority: 1
> CallerID: 2000
> Variable: _ALERT_INFO=info=alert-autoanswer
> ActionID: ORIGINATE_464
> 
> ... with and without the underscore before "ALERT_INFO", didn't work. In the log I saw that the "VarSet" - Events are triggered AFTER the phone starts to ring, even after the user has pressed "acknowledge call" or "cancel". I also tried other variables, but as I said, the settings apply after the phone is in the state it may not be in.
> 
> What to do ? Best thing would be to come into the dialplan somehow, or to call an AMI statement for setting a variable. Both things I couldn't manage.
> 
> Is there any chance to make a combined ORIGINATE which makes use of REDIRECT ? REDIRECT leads me into the dialplan, but needs one channel in use as much as I know. There's no "Dial" command in AMI as far as I can see.
> 
> The phone is a Snom 300, the Asterisk a 1.2 (productive) and 1.6 (test system), the solution should be applicable for both Asterisks and several phones, if possible. Thanks.
> 
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-- 
Alex Balashov - Principal
Evariste Systems
Web     : http://www.evaristesys.com/
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671



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