Mine

[zaptheritegroup] ;coming from phone company
exten => s,1,GotoIfTime(8:00-17:00|mon-fri|*|*?theritegroupbusinesshours,s,1)
exten => s,n,Goto(theritegroupafterhours,s,1)

	[theritegroupbusinesshours]
	exten => s,1,Dial(SIP/110&SIP/112,10)
	exten => s,n,Answer
	exten => s,n,Playback(pleasehold)
	exten => s,n,System(cp /etc/asterisk/intercom.call /etc/asterisk/intercom.outgoing)
	exten => s,n,System(mv /etc/asterisk/intercom.outgoing /var/spool/asterisk/outgoing)
	exten => s,n,Wait(1)
	exten => s,n,Dial(SIP/110&SIP/112,10,m)
	exten => s,n,Goto(theritegroupafterhours,s,1)
		
		[intercomincomingcall]
		exten => 1,1,Playback(attentionthephoneisringing)
		exten => s,1,Answer	
		exten => s,n,SIPAddHeader(Alert-Info: Auto Answer)
		exten => s,n,Page(SIP/110&SIP/112)
		exten => s,n,Hangup

	[theritegroupafterhours]
	exten => s,1,Answer
	exten => s,n,Background(3000)
	exten => s,n,Hangup