CN100466754C - 用户交换机的用户加入虚拟专用网业务的实现方法 - Google Patents

用户交换机的用户加入虚拟专用网业务的实现方法 Download PDF

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CN100466754C
CN100466754C CNB03145173XA CN03145173A CN100466754C CN 100466754 C CN100466754 C CN 100466754C CN B03145173X A CNB03145173X A CN B03145173XA CN 03145173 A CN03145173 A CN 03145173A CN 100466754 C CN100466754 C CN 100466754C
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subscriber
exchange
calling
user
specific format
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CN1568021A (zh
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蔡永峰
丁建军
徐海峰
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Shanghai Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

本发明公开了一种用户交换机的用户加入虚拟专用网业务的实现方法，该方法将用户交换机同时联接到固网运营商和综合运营商。用户在拨打普通呼叫时，呼叫通过固定电话运营商的网络进行接续，如果用户交换机的用户拨打虚拟专用网业务集团用户时，用户交换机将呼叫转接到综合运营商的网络中。

Description

用户交换机的用户加入虚拟专用网业务的实现方法
技术领域
本发明涉及虚拟专用网业务技术，特别涉及一种用户交换机(Private BranchExchange，PBX)的用户加入虚拟专用网业务的实现方法。
背景技术
目前有一些电信运营商暂时还不能给固定电话用户分配电话号码，或者这些用户的固定电话号码已经由其它固网电信运营商分配了号码，也没有将用户交换机分机用户加入到GSM和CDMA网的虚拟专用网(简称VPN)集团中。对于这些用户，呼叫时必需要通过固网运营商的网络，因此这些呼叫的市话费用也由固网运营商来收取。
发明内容
本发明的目的在于提供一种用户交换机的用户加入虚拟专用网业务的实现方法，使用户交换机分机用户在VPN集团内发起呼叫时将直接通过本运营商的网络。
实现本发明的技术方案：
一种用户交换机的用户加入虚拟专用网业务的实现方法，其特征在于当用户交换机的用户作主叫时包括步骤：
(1)、用户交换机的用户向虚拟专用网业务集团用户发起呼叫；
(2)、用户交换机将呼叫接续到提供虚拟专用网业务的网络中的IP前置机；
(3)、IP前置机将用户交换机的用户的主叫号码转换为该网络中特定格式的号码并将呼叫转接到网关交换机；
(4)、网关交换机将呼叫触发到业务控制点，业务控制点从所述特定格式的主叫号码中得出用户所在的虚拟专用网业务集团并返回给网关交换机；
(5)、网关交换机根据用户所在的虚拟专用网业务集团和所述短号码将呼叫接到被叫用户；
一种用户交换机的用户加入虚拟专用网业务的实现方法，其特征在于当用户交换机的用户作被叫时包括步骤：
A、主叫用户采用虚拟专用网业务短号码向用户交换机的用户发起呼叫；
B、本地移动交换中心将呼叫触发到业务控制点，业务控制点将根据所述短号码得到被叫用户的特定格式号码并返回给本地移动交换中心；
C、本地移动交换中心根据特定格式号码将呼叫转接到相应的IP前置机，该IP前置机根据特定格式号码中的相应信息将呼叫接续到用户交换机，由该用户交换机进行最终呼叫接续。
采用本发明可帮助暂时没有固定号码资源的运营商，将PBX交换机下的用户直接接入到自己的网络中来，从而分流一部分固定呼叫，拓展业务范围增加运营收入。尤其是利用VPN业务，可以将PBX交换机下的用户以加入VPN集团的方式直接联接到这些运营商的网络中，这样这些PBX用户在VPN集团内发起呼叫时将直接通过本运营商的网络，无须通过固网运营商的网络在转接到自己的网络，这部分呼叫的市话费就可以由该运营商直接收取。
附图说明
图1为本发明的接入原理示意图；
图2为通过移动汇接局接续的原理示意图；
图3为通过固网汇接局接续的原理示意图。
具体实施方式
本发明的实现需要给每个用户交换机(简称PBX)用户再定义一个特定格式的号码，该号码为仅供网络识别用的真实号码，通过配置相应的路由数据，这个真实号码可以实现用户交换机分机用户的呼叫接续。
参阅图1所示，用户交换机PBX同时联接到固网运营商网络和综合运营商网络，这里的综合运营商就是一个要将PBX交换机下的用户加入到自己VPN业务中的运营商。用户在拨打普通呼叫时，呼叫还是通过固定电话运营商的网络进行接续，但是如果PBX用户拨打VPN集团用户时(例如用户拨：VPN业务接入码+被叫短号码)PBX交换机就可以将呼叫转接到综合运营商的网络中。
综合运营商一般通过IP前置机给PBX用户提供IP电话呼叫服务。本发明也是利用IP前置机将PBX用户接入到综合运营商的网络，当需要触发智能业务时再由IP前置机将呼叫转接到业务交换点SSP，由业务交换点SSP将呼叫触发到业务控制点SCP进行智能业务处理。具体实现时用户交换机可以判断用户拨打的VPN业务的接入码将呼叫转接到IP前置机处理。
在呼叫接入到综合运营商的网络后一般还要触发智能网的虚拟专用网(VPN)业务。而且为了保证这些呼叫在综合运营商的网络中能够正确的接续，以及在SCP中能够对PBX的号码正确的处理，对这些PBX的主叫号码采用一个原则进行重新编号；同时在交换机上按照这些编号的原则进行路由数据的配置，以保证PBX的呼叫能够在综合运营商的网上正确的接续。
用户交换机特定格式号码的编号原则：
为了处理保证呼叫的接续和业务控制点SCP对呼叫的正确处理，需要在运营商的交换网络中对PBX的原来的主叫号码变换为特定格式号码，变换后的号码有两个作用，第一，在PBX做主叫的时候，用短号拨打网内用户，在业务控制点中必须先根据主叫号码得出用户的集团，才能将网内编号翻译为真实号码，但是PBX送出的主叫号码有可能与其他PBX的送出的号码重复，所以要确立一个编码原则，以便将各PBX区别开。第二，其他用户用短号拨打PBX，需要将短号翻译为该特定格式号码，各级交换机能够根据该号码将路由送到PBX(或PBX的分机)上。
编码原则为：用户交换机标识前缀(1位)+0+不带零的区号(2-3位)+中继群号(PBX编号，1-3位)+原来的PBX主叫号码(4-8位)如：9 0755 P1 P2 P3ABCD。原来的PBX主叫号码是指就是原来用户交换机给每个分机分配的内部短号码，不是用户交换机的长号码。
标识前缀是为了将PBX的虚拟主叫号码与实际的固定电话号码区分开，区号和中继群号是为了接续时在交换机上做路由数据。该号码只是在内部用于路由和鉴权，对用户是不可见的。由于需要通过七号信令中的TUP协议进行传输该号码，要求该号码长度不能够超过15位。
由IP前置机按照该编码原则，将PBX上报的主叫号码变换为该特定格式的主叫号码。
在接续到PBX的过程中，为了方便做路由数据，可以将PBX标识前缀变换为一个PBX接续前缀(1-4位)，号码位数多了，与其它号码容易区别。如一个PBX主叫为9-0755-001-1234，接续到该PBX时按照6010-755-001-1234来接续，交换机按照601选路由。
以下分别以PBX做VPN主叫和被叫对本发明进行详细说明：
PBX做VPN主叫的实现：
PBX做VPN主叫时，用户交换机有统一接入和就近接入两种组网方式：
统一接入：各本地网的PBX通过IP前置机统一接入某一个网关交换机(简称GMSC/SSP)(或叠加网的SSP)，由这个GMSC/SSP处理所有的PBX间及相关的呼叫。
就近接入：各本地网的PBX通过IP前置机就近接入当地的GMSC/SSP(或OVERLAY的SSP)，这种方式可以节省长途中继，路由结构也比较清晰，但是需做较多的路由数据；特别是在目标网方式，或者各本地网都有GMSC/SSP(或叠加网的SSP)时，应当采用此种方式。具体实施，可以采用上述两种方式结合的方式，在具备条件且用户较多的本地网采用就近接入，其它本地网采用统一接入。
参阅图1所示，用户交换机的用户作主叫的处理流程如下：
步骤1、用户交换机的用户向VPN集团用户发起呼叫；用户交换机将呼叫接续到提供虚拟专用网业务的网络中的IP前置机；
步骤2、IP前置机将用户交换机的用户的主叫号码转换为该网络中特定格式的号码并将呼叫转接到网关交换机；
步骤3、网关交换机触发智能业务到业务控制点SCP，进行智能业务的处理。业务控制点从所述特定格式的主叫号码中得出用户所在的虚拟专用网业务集团，并根据被叫的短号码得到被叫的真实号码，指示网关交换机接续呼叫；
步骤4、网关交换机根据被叫的真实号码将呼叫接续到被叫。
PBX做VPN被叫的实现：
在PBX用户加入到综合营运商的网络后，对PBX号码的翻译是在触发主叫流程的MSC/SSP，而要接续到的PBX用户的号码不是现网已有的号码，或者说现网的交换机并不支持特定格式号码。因此现有的路由数据无法完成PBX做被叫的接续过程，须预先做新的路由数据以解决本地路由和长途路由。
对于发起呼叫的手机用户与PBX用户在相同的本地网，则只要在GMSC/SSP做PBX接续号码格式的路由数据就可以将呼叫路由到IP前置机，然后再由IP前置机将呼叫接续到PBX交换机。
对于主叫VPN用户呼叫的PBX用户与主叫不在相同的本地网，就需要在现有交换机中寻找能够承担长途汇接局功能的局，把呼叫送到被叫PBX用户所在的本地网。
参阅图2所示，当主叫与被叫跨本地网时，通过在移动网络自身的移动汇接中心(简称TMSC)做路由数据来实现呼叫接续。MSC/SSP将呼叫送到TMSC，再由TMSC将呼叫送到PBX所在的GMSC，由GMSC通过IP前置机接续到PBX，这样的路由方式可以充分利用现有的网络设备，其实现步骤如下：
步骤1：手机发起的呼叫通过本地的移动交换中心触发智能业务到SCP，在SCP通过智能网的业务功能将移动用户拨打的被叫PBX用户的VPN短号码，按照PBX的编号格式翻译为可以接续的特定格式的被叫号码(即SCP通过短号和VPN集团号直接查找到特定格式号码)，然后再将呼叫重新转接到MSC/SSP进行接续。
步骤2：本地移动交换中心MSC/SSP判断被叫号码为本地网的号码还是异地网的号码，如果为本地网号码，则本地移动交换中心将呼叫转接到关口局GMSC/SSP，关口局根据特定格式号码确定该被叫为用户交换机的用户，进行步骤(6)，否则进行步骤(3)；
步骤3：本地移动交换中心将呼叫转接到移动汇接中心TMSC/SSP进行处理；
步骤4：移动汇接中心TMSC/SSP根据被叫号码中的用户交换机接续前缀和区号信息将呼叫转接到被叫用户交换机所在地的移动关口局GMSC/SSP。
步骤5：移动关口局GMSC/SSP根据被叫号码中的用户交换机接续前缀将呼叫转到IP前置机进行接续。
步骤6：IP前置机根据被叫号码中的中继号信息将呼叫接续到某个特定的用户交换机，由该用户交换机进行最终接续。
参阅图3所示，当主叫与被叫跨本地网时，通过IP前置机到汇接局路由来实现呼叫接续。IP前置机到现有的固定长途汇接局或长途SSP都有话路，可以选择其中一个作为PBX呼叫的长途汇接局，GMSC/SSP将要接续到PBX的呼叫都接续到IP前置机，如果PBX属于该IP前置机，就直接接续，如果不属于，则由IP前置机将呼叫送到固定长途汇接局，汇接局再将呼叫路由到PBX所在的IP前置机，完成接续。其实现步骤如下：
步骤1：手机发起的呼叫通过本地的移动交换中心触发智能业务到业务控制点SCP，在业务控制点SCP通过智能网的业务功能将移动用户拨打的被叫PBX用户的VPN短号码，按照PBX的编号格式翻译为可以接续的特定格式的被叫号码，然后再将呼叫重新转接到本地移动交换中心MSC/SSP进行接续。
步骤2：本地移动交换中心MSC/SSP判断被叫号码为PBX号码，因此将呼叫转接到本地移动关口局GMSC/SSP来处理。
步骤3：关口局判断被叫号码为PBX号码则将呼叫统一转接到本地IP前置机处理，因为本地IP前置机具有到固定汇接局的话路。
步骤4：本地IP前置机根据特定格式的被叫号码中的区号判断被叫用户是否与主叫用户在同一本地网，如果判断结果为否，则本地IP前置机将呼叫转到固网汇接局TS进行处理；否则进行步骤(6)；
步骤5：固网汇接局TS根据被叫号码中的用户交换机接续前缀和区号信息将呼叫转接到被叫PBX所在地的IP前置机。
步骤6：该IP前置机根据被叫号码中的中继号信息将呼叫接续到某个特定的用户交换机，由该用户交换机进行最终接续。
如果在全省范围内做了上述路由的数据，则可以实现手机用户在省内可以用短号呼叫PBX，如果在全国范围作了路由数据，则手机可以在全国漫游呼叫PBX。

Claims (7)

1、一种用户交换机的用户加入虚拟专用网业务的实现方法，其特征在于当用户交换机的用户作主叫时包括步骤:
(1)、用户交换机的用户向虚拟专用网业务集团用户发起呼叫；
(2)、用户交换机将呼叫接续到提供虚拟专用网业务的网络中的IP前置机；
(3)、IP前置机将用户交换机的用户的主叫号码转换为该网络中特定格式的号码并将呼叫转接到网关交换机，所述特定格式的号码为:用户交换机标识前缀+“0”+不带零的区号+中继群号+用户交换机的用户号码；
(4)、网关交换机将呼叫触发到业务控制点，业务控制点从所述特定格式的主叫号码中得出用户所在的虚拟专用网业务集团并返回给网关交换机；
(5)、网关交换机根据用户所在的虚拟专用网业务集团和短号码将呼叫接到被叫用户。
2、如权利要求1所述的方法，其特征在于:
用户交换机标识前缀为1位；
不带零的区号为2-3位；
中继群号为1-3位；
用户交换机的用户号码为4-8位。
3、如权利要求1所述的方法，其特征在于，本地网的用户交换机通过IP前置机统一接入关口局或/和通过IP前置机就近接入当地的关口局。
4、一种用户交换机的用户加入虚拟专用网业务的实现方法，其特征在于当用户交换机的用户作被叫时包括步骤:
A、主叫用户采用虚拟专用网业务短号码向用户交换机的用户发起呼叫；
B、本地移动交换中心将呼叫触发到业务控制点，业务控制点将根据所述短号码得到被叫用户的特定格式号码并返回给本地移动交换中心，所述特定格式的号码为:用户交换机标识前缀+“0”+不带零的区号+中继群号+用户交换机的用户号码；
C、本地移动交换中心根据特定格式号码将呼叫转接到被叫相应的IP前置机，该被叫相应的IP前置机根据特定格式号码中的相应信息将呼叫接续到被叫相应的用户交换机，由该被叫相应的用户交换机进行最终呼叫接续。
5、如权利要求4所述的方法，其特征在于，步骤C包括步骤:
C11、本地移动交换中心根据特定格式号码中的区号判断被叫用户是否与主叫用户在同一本地网，如果判断结果为是，则进行步骤C12，否则进行步骤C13；
C12、本地移动交换中心将呼叫接续到关口局，关口局根据特定格式号码确定该被叫为用户交换机的用户，并进行步骤C15；
C13、本地移动交换中心将呼叫接续到移动汇接局，移动汇接局根据特定格式号码中的接续前缀和区号信号将呼叫转接到被叫用户交换机所在的移动关口局；
C14、所述关口局根据特定格式号码中的接续前缀将呼叫接续到相应的IP前置机；
C15、IP前置机根据特定格式号码中的相应信息将呼叫接续到被叫相应的用户交换机，由该被叫相应的交换机进行最终呼叫接续。
6、如权利要求4所述的方法，其特征在于，步骤C包括步骤:
C21、本地移动交换中心根据特定格式号码确定该被叫用户为用户交换机的用户，并将呼叫接续到本地移动关口局；
C22、本地移动关口局根据特定格式号码将呼叫转接到本地IP前置机；
C23、本地IP前置机根据特定格式号码中的区号判断被叫用户是否与主叫用户在同一本地网，如果判断结果为否，则进行步骤c24，否则进行步骤c25；
C24、本地IP前置机将呼叫转到固定汇接局，由汇接局根据特定格式号码中的接续前缀和区号信息将呼叫转接到被叫用户交换机所在地的IP前置机；
C25、所述IP前置机根据特定格式号码中的相应信息将呼叫接续到被叫相应的用户交换机，由该被叫相应的交换机进行最终呼叫接续。
7、如权利要求4、5或6所述的方法，其特征在于:
用户交换机标识前缀为1位；
不带零的区号为2-3位；
中继群号为1-3位；
用户交换机的用户号码为4-8位。
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