From trixbox Bug Tracker:
Fix;
Modify 'extensions.conf', section '[macro-exten-vm]';
[macro-exten-vm]
exten => s,1,Macro(user-callerid)
exten => s,n,Set(FROMCONTEXT=exten-vm)
exten => s,n,Set(VMBOX=${ARG1})
exten => s,n,Set(EXTTOCALL=${ARG2})
exten => s,n,Set(CFUEXT=${DB(CFU/${EXTTOCALL})})
exten => s,n,Set(CFBEXT=${DB(CFB/${EXTTOCALL})})
exten => s,n,Set(RT=${IF($[$["${VMBOX}"!="novm"] | $["foo${CFUEXT}"!="foo"]]?${RINGTIMER}:"")})
exten => s,n,Macro(record-enable,${EXTTOCALL},IN)
exten => s,n,Macro(dial,${RT},${DIAL_OPTIONS},${EXTTOCALL})
exten => s,n,Set(SV_DIALSTATUS=${DIALSTATUS})
exten => s,n,GosubIf($[$["${SV_DIALSTATUS}"="NOANSWER"] & $["foo${CFUEXT}"!="foo"]]?docfu,1) ; check for CFU in use on no answer
exten => s,n,GosubIf($[$["${SV_DIALSTATUS}"="BUSY"] & $["foo${CFBEXT}"!="foo"]]?docfb,1) ; check for CFB in use on busy
exten => s,n,Set(DIALSTATUS=${SV_DIALSTATUS})
exten => s,n,NoOp(Voicemail is '${VMBOX}')
exten => s,n,GotoIf($["${VMBOX}" = "novm"]?s-${DIALSTATUS},1) ; no voicemail in use for this extension
exten => s,n,NoOp(Sending to Voicemail box ${EXTTOCALL})
exten => s,n,Macro(vm,${VMBOX},${DIALSTATUS})
; Try the Call Forward on No Answer / Unavailable number
exten => docfu,1,Set(RTCFU=${IF($["${VMBOX}"!="novm"]?${RINGTIMER}:"")})
exten => docfu,n,Dial(Local/${CFUEXT}@from-internal/n,${RTCFU},${DIAL_OPTIONS})
exten => docfu,n,Return
; Try the Call Forward on Busy number
exten => docfb,1,Set(RTCFB=${IF($["${VMBOX}"!="novm"]?${RINGTIMER}:"")})
exten => docfb,n,Dial(Local/${CFBEXT}@from-internal/n,${RTCFB},${DIAL_OPTIONS})
exten => docfb,n,Return
; Extensions with no Voicemail box reporting BUSY come here
exten => s-BUSY,1,NoOp(Extension is reporting BUSY and not passing to Voicemail)
exten => s-BUSY,n,GotoIf($[${LEN(${BLINDTRANSFER})} > 0]?blindtr,1) ; check if blindtransfer
exten => s-BUSY,n,Playtones(busy)
exten => s-BUSY,n,Busy(20)
; Anything but BUSY comes here
exten => _s-.,1,NoOp(Extension is reporting UNAVAILABLE and not passing to Voicemail)
exten => _s-.,n,GotoIf($[${LEN(${BLINDTRANSFER})} > 0]?blindtr,1) ; check if blindtransfer
exten => _s-.,n,Playtones(congestion)
exten => _s-.,n,Congestion(10)
exten => blindtr,1,NoOp(CallingBack ${BLINDTRANSFER})
exten => blindtr,n,Set(blindtrdevice=${CUT(BLINDTRANSFER,/,2-)})
exten => blindtr,n,Set(blindtrext=${CUT(BLINDTRDEVICE,,1)})
exten => blindtr,n,Wait(1)
exten => blindtr,n,Ringing
exten => blindtr,n,Wait(1)
exten => blindtr,n,NoOp(CallingBack ${BLINDTREXT})
exten => blindtr,n,Macro(dial,${RT},${DIAL_OPTIONS},${BLINDTREXT})
