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*                                                                                                 *
* a2billing 1.x (c) AGPL 2003-2010                                                                *
* Documentation                                                                                   *
*                                                                                                 * 
* Title: Asterisk channel variables                                                               *
* Date: April 2009                                                                                *
* Version: 1.0                                                                                    *
* Author: AB                                                                                      *
* Status: Final                                                                                   *
*                                                                                                 *
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Asterisk channel variable DIALSTATUS
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Contains a text string signifying result of the last dial attempt :

* ANSWER: Call is answered. A successful dial. The caller reached the callee.
* BUSY: Busy signal. The dial command reached its number but the number is busy.
* NOANSWER: No answer. The dial command reached its number, the number rang for too long, 
	then the dial timed out.
* CANCEL: Call is cancelled. The dial command reached its number but the caller hung up before 
	the callee picked up.
* CONGESTION: Congestion. This status is usually a sign that the dialled number is not recognised.
* CHANUNAVAIL: Channel unavailable. On SIP, peer may not be registered.
* DONTCALL: Privacy mode, callee rejected the call
* TORTURE: Privacy mode, callee chose to send caller to torture menu
* INVALIDARGS: Error parsing Dial command arguments (added for Asterisk 1.4.1, SVN r53135-53136) 



A2Billing Translation to :

	1 => ANSWER / ANSWERED
	2 => BUSY
	3 => NOANSWER
	4 => CANCEL
	5 => CONGESTION
	6 => CHANUNAVAIL
	7 => DONTCALL
	8 => TORTURE
	9 => INVALIDARGS



 
 
