安德森技術備忘板

瑪凱是國內一家 VOIP Provider，提供 SIP 網路電話服務，不過使用戶在每次撥出時都必須強迫先聽一段語音 "您還可使用xxx分鐘"，這樣的設計實在太惱人，比較 make sense 的作法應該是，設計一個特殊碼的撥號，由使用戶主動來查詢自己的通話時間，更人性化的作法，可以在加上"低量通知"功能，由使用戶來設定想要的低量警示值，當低於 xx 通話時間時，系統以 Email 或簡訊通知使用戶。

既然供應商不願意修改系統，只好自己來作，還好在 Asterisk 上可以有很彈性的作法。從 IPBB 的說法，可以在撥號後再按下 # 鍵就可以略過語音提示，基於這樣的流程，我們就使系統在撥出至 IPBB Trunk 時就自動送一個 # 的 DTMF signal，來模擬手按的動作。

作法如下，《PBX》《Tools》《File Editor》搜尋 extension《Filter》選擇 extensions_custom.conf

在 [from-internal-custom] 這段的最下方加上

include => custom-trunk-out-ipbb  ; Cancel the ipbb's prompted voice, should dial *333+phone number

在所有內容的最底部，加上下方所有內容

;;;;;;;;;;;;;;;;;;;;;;;;;; start-ipbb trunk out ;;;;;;;;;;;;;;;;;;;;;;;;;;
; prefix code is *333
;
[custom-trunk-out-ipbb]
exten => _*333.,1,Macro(dialout-trunk-dtmf-ipbb,2,${EXTEN:4},,)
exten => _*333.,n,SendDTMF(#)
exten => _*333.,n,Macro(outisbusy,)

[macro-dialout-trunk-dtmf-ipbb]
include => macro-dialout-trunk-custom
exten => s,1,Set(DIAL_TRUNK=${ARG1})
exten => s,n,ExecIf($[$["${ARG3}" != ""] & $["${DB(AMPUSER/${AMPUSER}/pinless)}" != "NOPASSWD"]],Authenticate,${ARG3})
exten => s,n,GotoIf($["x${OUTDISABLE_${DIAL_TRUNK}}" = "xon"]?disabletrunk,1)
exten => s,n,Set(DIAL_NUMBER=${ARG2})
exten => s,n,Set(DIAL_TRUNK_OPTIONS=${DIAL_OPTIONS})
exten => s,n,Set(GROUP()=OUT_${DIAL_TRUNK})
exten => s,n,GotoIf($["${OUTMAXCHANS_${DIAL_TRUNK}}foo" = "foo"]?nomax)
exten => s,n,GotoIf($[ ${GROUP_COUNT(OUT_${DIAL_TRUNK})} > ${OUTMAXCHANS_${DIAL_TRUNK}} ]?chanfull)
exten => s,n(nomax),GotoIf($["${INTRACOMPANYROUTE}" = "YES"]?skipoutcid)
exten => s,n,Set(DIAL_TRUNK_OPTIONS=${TRUNK_OPTIONS})
exten => s,n,Macro(outbound-callerid,${DIAL_TRUNK})
exten => s,n(skipoutcid),AGI(fixlocalprefix)
exten => s,n,Set(OUTNUM=${OUTPREFIX_${DIAL_TRUNK}}${DIAL_NUMBER})
exten => s,n,Set(custom=${CUT(OUT_${DIAL_TRUNK},:,1)})
exten => s,n,GotoIf($[$["${MOHCLASS}" = "default"] | $["foo${MOHCLASS}" = "foo"]]?gocall)
exten => s,n,Set(DIAL_TRUNK_OPTIONS=M(setmusic^${MOHCLASS})${DIAL_TRUNK_OPTIONS})
exten => s,n(gocall),Macro(dialout-trunk-predial-hook,)
exten => s,n,GotoIf($["${PREDIAL_HOOK_RET}" = "BYPASS"]?bypass,1)
exten => s,n,GotoIf($["${custom}" = "AMP"]?customtrunk)
exten => s,n,Dial(${OUT_${DIAL_TRUNK}}/${OUTNUM},1,M(play-outnum-dtmf))
exten => s,n,Goto(s-${DIALSTATUS},1)

exten => s,n(customtrunk),Set(pre_num=${CUT(OUT_${DIAL_TRUNK},$,1)})
exten => s,n,Set(the_num=${CUT(OUT_${DIAL_TRUNK},$,2)})
exten => s,n,Set(post_num=${CUT(OUT_${DIAL_TRUNK},$,3)})
exten => s,n,GotoIf($["${the_num}" = "OUTNUM"]?outnum:skipoutnum)
exten => s,n(outnum),Set(the_num=${OUTNUM})
exten => s,n(skipoutnum),Dial(${pre_num:4}${the_num}${post_num},300,${DIAL_TRUNK_OPTIONS})
exten => s,n,Goto(s-${DIALSTATUS},1)
exten => s,n(chanfull),Noop(max channels used up)
exten => s-BUSY,1,Noop(Dial failed due to trunk reporting BUSY - giving up)
exten => s-BUSY,n,Playtones(busy)
exten => s-BUSY,n,Busy(20)
exten => s-NOANSWER,1,Noop(Dial failed due to trunk reporting NOANSWER - giving up)
exten => s-NOANSWER,n,Playtones(congestion)
exten => s-NOANSWER,n,Congestion(20)
exten => s-CANCEL,1,Noop(Dial failed due to trunk reporting CANCEL - giving up)
exten => s-CANCEL,n,Playtones(congestion)
exten => s-CANCEL,n,Congestion(20)
exten => _s-.,1,GotoIf($["x${OUTFAIL_${ARG1}}" = "x"]?noreport)
exten => _s-.,n,AGI(${OUTFAIL_${ARG1}})
exten => _s-.,n(noreport),Noop(TRUNK Dial failed due to ${DIALSTATUS} - failing through to other trunks)
exten => disabletrunk,1,Noop(TRUNK: ${OUT_${DIAL_TRUNK}} DISABLED - falling through to next trunk)
exten => bypass,1,Noop(TRUNK: ${OUT_${DIAL_TRUNK}} BYPASSING because dialout-trunk-predial-hook)
exten => h,1,Macro(hangupcall,)

; end of [macro-dialout-trunk]

[macro-play-outnum-dtmf]
exten => s,1,Wait(1)
exten => s,2,SendDTMF(#)
;;;;;;;;;;;;;;;;;;;;;;;;;; end-ipbb trunk out ;;;;;;;;;;;;;;;;;;;;;;;;;; 

註：請依你的環境修改第5行

exten => _*333.,1,Macro(dialout-trunk-dtmf-ipbb,2,${EXTEN:4},,) 

紅字的數字2 改成實際的 IPBB Trunk 編號
藍字的部份*333 是撥號的前置碼，如不修改時，撥號方法需為 *333 + 電話號碼; 如撥號時不想要有任何前置碼，可以改為 X.，並且確定 Outbound Route 的撥號規則無衝突情況。

儲存以上修改，但此時這些修改並不會被系統套用，必須執行  CLI 指令 重新載入  Extension 設定，作法如下：

《PBX》《Tools》《Asterisk Cli》輸入 dialplan reload 《Execute》

完成。