說明
有一個 SIP gateway 名為 '2100'，且附帶有 4 個 port，客戶希望從 dialer 的撥出的電話，可以：
- 事先為每一組 port 設定每日可通話的分鐘數，例如 300 分(1800 秒)。
- 當撥出的電話超過所設定的通話時間限定時，必須切斷電話且傳回 503 SIP 訊號。
- 撥出時隨機選擇任一 port。
系統環境
- FreePBX Distro 1.810.210
- Asterisk 1.8.10
- FreePBX 2.10
設定
extensions_custom.conf：
[trunk-LB-2100]
exten => _X.,1,Set(TRUNK_NAME=ccnet)
exten => _X.,n,Noop(Load Balancing for Trunk ${TRUNK_NAME})
exten => _X.,n,AGI(check_LB_ports.php,${TRUNK_NAME},${EXTEN})
exten => _X.,n,GotoIf($[${CALL_LEFTTIME} > 0]?trunkallowed)
exten => _X.,n,Hangup(42)
exten => _X.,n(trunkallowed),Dial(SIP/${TRUNK_NAME}-${CALL_PORT}/${EXTEN},300,L(${CALL_LEFTTIME}000:61000:30000))
exten => _X.,n,Hangup(42)
check_LB_ports.php：
reference to undefined name 'syntax' Exception of type 'MindTouch.Deki.Script.Runtime.DekiScriptUndefinedNameException' was thrown. (click for details)Callstack:
at User:alang/Private_Zone/Asterisk_開發筆記/AGI:_Trunk_Load-Balancing
MindTouch.Deki.Script.Runtime.DekiScriptUndefinedNameException: reference to undefined name 'syntax' Exception of type 'MindTouch.Deki.Script.Runtime.DekiScriptUndefinedNameException' was thrown.
at MindTouch.Deki.Script.Compiler.DekiScriptExpressionEvaluation.Visit (MindTouch.Deki.Script.Expr.DekiScriptVar expr, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Expr.DekiScriptVar.VisitWith[DekiScriptExpressionEvaluationState,Range] (IDekiScriptExpressionVisitor`2 visitor, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Compiler.DekiScriptExpressionEvaluation.Evaluate (MindTouch.Deki.Script.Expr.DekiScriptAccess expr, DekiScriptExpressionEvaluationState state, Boolean evaluateProperties) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Compiler.DekiScriptExpressionEvaluation.Visit (MindTouch.Deki.Script.Expr.DekiScriptAccess expr, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Expr.DekiScriptAccess.VisitWith[DekiScriptExpressionEvaluationState,Range] (IDekiScriptExpressionVisitor`2 visitor, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Compiler.DekiScriptExpressionEvaluation.Visit (MindTouch.Deki.Script.Expr.DekiScriptCall expr, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Expr.DekiScriptCall.VisitWith[DekiScriptExpressionEvaluationState,Range] (IDekiScriptExpressionVisitor`2 visitor, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Compiler.DekiScriptExpressionEvaluation.Visit (MindTouch.Deki.Script.Expr.DekiScriptSequence expr, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Expr.DekiScriptSequence.VisitWith[DekiScriptExpressionEvaluationState,Range] (IDekiScriptExpressionVisitor`2 visitor, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0
at MindTouch.Deki.Script.Compiler.DekiScriptExpressionEvaluation.Visit (MindTouch.Deki.Script.Expr.DekiScriptReturnScope expr, DekiScriptExpressionEvaluationState state) [0x00000] in <filename unknown>:0 