我想通了
编辑 /etc/asterisk/extensions_custom.com 并粘贴以下内容
[from-internal-custom]
include => enable-switch
[check-active-switch]
exten => s,1,NoOp("This context loops through all the switches and checks which one is ON. Than it follows its destination")
exten => s,n,GoSub(sub-get-nr-of-switches,s,1)
exten => s,n,Set(nrofs=${GOSUB_RETVAL})
exten => s,n,Set(i=0)
exten => s,n,Set(default-dest=app-daynight,${switchnr},1)
exten => s,n,Set(switchnr="NULL")
exten => s,n,While($[$[${i} < ${nrofs}] & $[${switchnr} = "NULL"]])
exten => s,n,Set(switchnr=${IF($["${DB(DAYNIGHT/C${i})}" = "NIGHT"]?${i}:"NULL")})
exten => s,n,Set(i=$[${i} + 1])
exten => s,n,EndWhile
exten => s,n,GotoIf($[${switchnr}!="NULL"]?app-daynight,${switchnr},1:${default-dest})
exten => s,n,Hangup()
[sub-get-nr-of-switches]
exten => s,1,Set(nr_of_s=0)
exten => s,n,Set(exten_state="NOT_ACQUIRED")
exten => s,n,While($[${exten_state}!=0])
exten => s,n,Set(exten_state=$[${VALID_EXTEN(app-daynight,${nr_of_s},1)}])
exten => s,n,NoOp(Exten nr ${nr_of_s} of app-daynight is ${exten_state})
exten => s,n,Set(nr_of_s=${IF($[${exten_state}=1]?$[${nr_of_s}+1]:${nr_of_s})})
exten => s,n,EndWhile
exten => s,n,NoOp(${nr_of_s} switches found)
exten => s,n,Return(${nr_of_s})
[enable-switch]
exten =>_*20X,1,NoOp("Abilita Switch selezionato e disabilita altre")
same => n,GoSub(sub-get-nr-of-switches,s,1)
same => n,Set(nrofs=${GOSUB_RETVAL})
same => n,Set(switchtoactivate=${EXTEN:3})
same => n,NoOp(Activated Switch nr ${switchtoactivate})
same => n,Set(i=0)
same => n,While($[${i}<${nrofs}])
same => n,Set(DB(DAYNIGHT/C${i})=DAY)
same => n,Set(i=$[${i}+1])
same => n,EndWhile
same => n,Set(freepbx_toggle_dest=*28${switchtoactivate})
same => n,Goto(app-daynight-toggle,${freepbx_toggle_dest},1)
same => n,Hangup
接下来去freepbx并创建一个自定义目的地 -> check-active-switch,s,1 并将其设置为入站路由的目的地