[incoming]
;This extension line will ring SIP
;extension 2001 for 60 seconds then hang up. Modify as necessary to fit your dialplan
exten => s,1,Dial(SIP/1000,60,tr)
exten => s,2,hangup

[outgoing]
exten => _1NXXNXXXXXX,1,Dial(SIP/${EXTEN}@sip.broadvoice.com,60)