ChannelRedirect及多方实例

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ChannelRedirect: Redirect an existing channel to the dialplan. (1.4)

功能:

让指定的通道重定向拨号方案中指定的目标位置，在1.4版本时被引进的,同时也可以代接(偷取)一个正在振玲的来电.

描述:

ChannelRedirect(channel|[[context|]extension|]priority)?
发送指定通道到指定的拨号方案中的目标位置（Sends the specified channel to the specified extension priority）

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下面有一个示例:

实现Asterisk多方通话

这里面我将试图描述如果从二方通话创建多方通话。（Here I will attempt to describe how to make n-way calls from 2-way calls.）

实现此功能要用到二个命令函数:MeetMe和ChannelRedirect,你需要 Dahdi/Zaptel timing 驱动让MeetMe工作。（All work done by two applications:?MeetMe?and ChannelRedirect. You need the Dahdi/Zaptel timing driver to have MeetMe working. ）

问题:?For Asterisk 1.4 do wee need to replace 'ChannelRedirect' as used below with 'ManagerRedirect' as in?bug/patch 6508??

这里有一个示例拨号方案脚本：?

[default]?
exten => _XXX,1,Set(DYNAMIC_FEATURES=nway-start)?
exten => _XXX,n,Dial(SIP/${EXTEN})?

[dynamic-nway]?
exten => _XXX,1,Answer?
exten => _XXX,n,Set(CONFNO=${EXTEN})?
exten => _XXX,n,Set(MEETME_EXIT_CONTEXT=dynamic-nway-invite)?
exten => _XXX,n,Set(DYNAMIC_FEATURES=)?
exten => _XXX,n,MeetMe(${CONFNO},pdMX)?
exten => _XXX,n,Hangup?

[dynamic-nway-invite]?
exten => 0,1,Read(DEST,dial,,i)?
exten => 0,n,Set(DYNAMIC_FEATURES=nway-inv#nway-noinv)?
exten => 0,n,Dial(Local/${DEST}@dynamic-nway-dest,,g)?
exten => 0,n,Set(DYNAMIC_FEATURES=)?
exten => 0,n,Goto(dynamic-nway,${CONFNO},1)?
exten => i,1,Goto(dynamic-nway,${CONFNO},1)?

[dynamic-nway-dest]?
exten => _XXX,1,Dial(SIP/${EXTEN})?

[macro-nway-start]?
exten => s,1,Set(CONFNO=${FindFreeConf()})?
exten => s,n,ChannelRedirect(${BRIDGEPEER},dynamic-nway,${CONFNO},1)?
exten => s,n,Read(DEST,dial,,i)?
exten => s,n,Set(DYNAMIC_FEATURES=nway-inv#nway-noinv)?
exten => s,n,Dial(Local/${DEST}@dynamic-nway-dest,,g)?
exten => s,n,Set(DYNAMIC_FEATURES=)?
exten => s,n,Goto(dynamic-nway,${CONFNO},1)?

[macro-nway-ok]?
exten => s,1,ChannelRedirect(${BRIDGEPEER},dynamic-nway,${CONFNO},1)?

[macro-nway-notok]?
exten => s,1,SoftHangup(${BRIDGEPEER})?
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Note, You need to provide FindFreeConf() function (or any other way) to get free Conference number.?

要使得这些生效要在features.conf做如下工作:

首先
[applicationmap]?
nway-start => *0,caller,Macro,nway-start?
nway-inv => **,caller,Macro,nway-ok?
nway-noinv => *#,caller,Macro,nway-notok?

再次在执行前必须对通道变量DYNAMIC_FEATURES进行赋值。
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看看它怎么工作的:

?当你和别人通话的时候，按*0 (执行宏 nway-start)。 被叫马上被传递到一个空闲的会议室，而你将听到拨号音，等待你输入你要邀请的电话号码。当被邀请方接通后，你在和这个第三方通话的过程中，可以按 ** （在features.conf可以定义）加入会议，按 *# 挂掉他然后返回会议。

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在示例所遇问题及解决方法:

1.Function FindFreeConf not registered