Dial an exten 157, record the message, hang up, then create call files to dial out to overhead page unit and announce message.
exten => 157,1,Goto(overhead-pager,s,1) [overhead-pager] ;------record the over head page file----------------------------------------- exten => s,1,Answer() exten => s,n,Wait(2) exten => s,n,Record(pager/currentpage.ulaw,5,60,) ;mkdir /var/lib/asterisk/sounds/pager exten => s,n,Wait(2) exten => s,n,Hangup exten => t,1,Hangup() exten => h,1,Goto(page-app,ohp,1) [page-app] ;------over head page (ohp) call file setup------------------------------------ exten => ohp,1,Set(spooldir=/var/spool/asterisk) exten => ohp,n,System(echo "Channel: SIP/102" > ${spooldir}/page.call) ;set the proper sip device to call exten => ohp,n,System(echo "MaxRetries: 0" >> ${spooldir}/page.call) exten => ohp,n,System(echo "RetryTime: 60" >> ${spooldir}/page.call) exten => ohp,n,System(echo "WaitTime: 45" >> ${spooldir}/page.call) exten => ohp,n,System(echo "Context: page-app...