php - 如何在拨号方案中获取 dtmf 值

Question

我有一个拨号方案，我想要的是，如果用户按任意键然后再次播放文件，但我不明白如何在拨号方案中获取dtmf 值。这是我的拨号方案:

[callme]  
exten => s,1,Answer 
exten => s,n,Playback(demo/${FILENAME1})

首先如何获取 DTMF 值，如果用户按任意键，则播放应执行 2 次。但我想使用 dialplan 管理所有这些事情。

Answer 1

您可以使用 WaitExten [1] 来完成:

[callme]  
exten => s,1,Answer 
exten => s,n,Playback(demo/${FILENAME1})
exten => s,n,WaitExten(3)
exten => s,n,Goto(s,1)
exten => 1,1,Noop(user pressed 1)
exten => 1,n,Goto(however-shall-go-to-when-pressed-1)
exten => 2,1,Noop(user pressed 2)
exten => 2,n,Goto(however-shall-go-to-when-pressed-2)

使用扩展模式 [2]:

[callme]  
exten => s,1,Answer 
exten => s,n,Playback(demo/${FILENAME1})
exten => s,n,WaitExten(3)
exten => s,n,Goto(s,1)
exten => X,1,Noop(user pressed ${EXTEN})
exten => X,n,Goto(however-shall-go-to-when-pressed-${EXTEN})

这正是您所要求的:

[callme]  
exten => s,1,Answer 
exten => s,n,Playback(demo/${FILENAME1})
exten => s,n,WaitExten(3) 
exten => s,n,NoOp(going on - no dtmf detectd)
exten => X,1,Noop(user pressed ${EXTEN})
exten => X,n,Goto(s,1)

另请查看背景 Asterisk 应用程序 [3]。

引用资料:

[1] http://www.voip-info.org/wiki/view/Asterisk+cmd+WaitExten

[2] http://www.voip-info.org/wiki/view/Asterisk+Dialplan+Patterns

[3] http://www.voip-info.org/wiki/view/Asterisk+cmd+BackGround