Hi everyone! Nice post! Is helping me out of a situation but i came up with an obstacle.
The actual problem im facing is to do this SendRequest[...] work. 
I have a strategy that define a target currently busy. An EventError is generated by SIP Server, with Error Info "DN is busy". When the call leaves the target block from red port, the strategy check if this is the cause, and send a request to the DN:
[i]v_dn = '90000'
SendRequest[RequestAgentNotReady, Cat['thisdn:',v_dn,'|16:4,|17.','ReasonCode',':','10']][/i]
and in DN 90000 i have the configured option inside Annex tab:
[i][urs_p]
event_arrive = ringing[/i]
I have all connections between SIP Server, URS, StatServer. The fact is that it isnt working. I keep getting the message:
[code]12:45:35.937 Trc 04541 RequestAgentNotReady received from [572] (0000001f urs_p x.x.x.x:yyyyy)
message RequestAgentNotReady
	AttributeThisDN	'90000'
	AttributeReferenceID	80
	AttributeReason	[20] 00 01 00 00..
		'ReasonCode'	'10'
	AttributeAgentWorkMode	4 (AuxWork)
@12:45:35.9370 [0] 8.1.000.59 send_to_client: message EventError
	(DN is not registered)
	AttributeEventSequenceNumber	000000000000075f
	AttributeTimeinuSecs	937000
	AttributeTimeinSecs	1302450335 (12:45:35)
	AttributeErrorCode	41
	AttributeReferenceID	80
	AttributeThisDN	'90000'[/code]
Is the SendRequest built in a wrong way or the DN?  Help!