exten => 705,1,Dial(SIP/Jeff,20)
exten => 705,2,Goto(705-${DIALSTATUS},1)
exten => 705-NOANSWER,1,Voicemail(su705@internal)
exten => 705-CHANUNAVAIL,1,Voicemail(su705@internal)
exten => 705-BUSY,1,Voicemail(sb705@internal)
exten => 705,102,Voicemail(su705@internal)