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1、Asterisk的软交换和中继网关配置1 拓扑图和地址、号码规划：拓扑图和地址、号码规划2 要达到的目标：l PSTN侧的电话可以拨号17988到中继网关，听到提示音后进行二次拨号，拨1、2、3、4分别给出4种音乐，当一种音乐不喜欢听，可以通过再次拨1、2、3、4自动切换到另外一段音乐。l PSTN和IP侧的电话可以互相拨打。3 配置1：the configuration of TG-sip.confsiptest ；设置一个sip帐号，用于指定接入方SIP服务器的IP地址。-extensions.conftestMusic ；设置拨号规则，Context都由testMusic来标识。上面的配
2、置中sip.conf里面，就要把context设定为testMusic，以表示由siptest中对端host呼叫来的号码按照下列拨号计划执行。exten = _17988,1,Wait,1 ; Wait a second, just for funexten = _17988,n,Answer ; Answer the lineexten = _17988,n,Set(TIMEOUT(digit)=5) ; Set Digit Timeout to 5 secondsexten = _17988,n,Set(TIMEOUT(response)=10) ; Set Response Timeou
3、t to 10 secondsexten = _17988,n(restart),BackGround(demo-congrats) ; Play a congratulatory messageexten = _17988,n,WaitExten ; Wait for an extension to be dialed. exten = _123X,1,Answer()exten = _123X,n,Dial(ZAP/g1/$EXTEN)exten = _123X,n,Hungup()exten = _133X,1,Answer()exten = _133X,n,Dial(SIP/sipte
4、st/$EXTEN)exten = _133X,n,Hungup()exten = 1,1,BackGround(demo-moreinfo)exten = 2,1,BackGround(demo-instruct)exten = 3,1,BackGround(demo-thanks)exten = 4,1,BackGround(demo-nogo)-zaptel.conf ；这个文件主要配置E1接口特性，将每个E1信道进行定义，B信道和D信道各自的标号。loadzone = nodefaultzone = nospan=1,1,0,ccs,hdb3,crc4span=2,0,0,ccs,hd
5、b3,crc4span=3,0,0,ccs,hdb3,crc4span=4,0,0,ccs,hdb3,crc4#span1bchan=1-15dchan=16bchan=17-31#span2bchan=32-46dchan=47bchan=48-62#span3bchan=63-77dchan=78bchan=79-93#span4bchan=94-108dchan=109bchan=110-124-zapata.conf ；这个文件就是用来设置信道（channels）的属性和组选项，把最后的那些信道（就是4个E1的中继网关的所有数据信道）标志成为group1，然后在拨号计划里面可以使用g1
6、这个变量。（见上面的extensions.conf中那条exten = _123X,n,Dial(ZAP/g1/$EXTEN)，说按照升序对组1的信道进行轮循占用。）channelslanguage=encontext=testMusicswitchtype=euroisdnpridialplan=unknownprilocaldialplan=unknownsignalling=pri_netusecallerid=yeshidecallerid=nocallwaiting=yesusecallingpres=yescallwaitingcallerid=yesthreewaycalling
7、=yestransfer=yescancallforward=yescallreturn=yesechocancel=yesechocancelwhenbridged=yesrxgain=0.0txgain=0.0group=1callgroup=1pickupgroup=1immediate=nocontext = testMusicsignalling=pri_netchannel = 1-15channel = 17-31channel = 32-46channel = 48-62channel = 63-77channel = 79-93channel = 94-108channel
8、= 110-124 4 配置2 ：the configuration of SIP server-sip.confsiptest ；设置siptest这个帐号来标识它所需落地的中继网关地址和拨号规则所属的context名称testMusic。1338 ；设置一个电话的帐号1338，需要用这个1338来拨测PSTN侧的两个电话1234和1235。context=testMusictype=friendcallerid=1338host=dynamicsecret=1338-extensions.conftestMusic ；设置context来指定拨号规则，这个拨号规则就是将打到PSTN侧的电话
9、转到中继网关（siptest帐号所定义的），将打到1338的转到1338这个电话上来（1338所定义的。）。exten = _123X,1,Answer()exten = _123X,n,Dial(SIP/siptest/$EXTEN,30,r)exten = _123X,n,Hangup()exten = _1338,1,Answer()exten = _1338,n,Dial(SIP/1338,30,r)exten = _1338,n,Hangup()exten = _17988,1,Answer()exten = _17988,1,Dial(SIP/siptest/$EXTEN,30,r)exten = _17988,n,Hangup()
