[asterisk-users] Passing a variable from one Asterisk box to another

[Watkins, Bradley]

________________________________

From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Eric
Bishop
Sent: Tuesday, February 20, 2007 5:11 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Passing a variable from one Asterisk box to
another



	Hi all,
	
	We currently have 2 Asterisk boxes and we pass calls to a fro.
All works great except we now need to pass variables between them. 
	
	For example now on box 1 we have:
	
	exten => _23XX,1,SetVar(Foo=1234) 
	exten => _23XX,2,Dial(SIP/${EXTEN:0}@Box2)
	
	When the call dials into Box 2 the variable Foo does not get
passed...
	
	Does anyone have any clever ideas? 
	  

The correct way using SIP is to add X headers before the Dial and then
pulling them in and assigning them to channel variables on the ingress
box.  Here's a snippet that shows the idea:

On the box dialing out:

exten => _23XX,1,Set(Foo=1234)  <--- Use Set here not SetVar
exten => _23XX,2,SIPAddHeader(X-Foo: ${FOO})
exten => _23XX,3,Dial(SIP/${EXTEN:0}@Box2)


On the ingress box:

exten => _23XX,1,Set(Foo=${SIP_HEADER(X-Foo)})
exten => _23XX,2,Answer()
...yada yada


Regards,
- Brad


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