软交换基础知识培训.ppt

* * * MGMT：管理消息，用于M3UA事件指示，目前定义了2类事件：AS状态发生改变、其他。 TRANSFER MESSAGES：用于传递七号用户消息。 SSNM：MTP3管理消息 ASPSM：ASP状态管理消息 ASPTM：ASP话务管理消息 * * * * * * * * * Megaco和H.248是同一协议的两个名称，这个协议是由因特网工程任务组（IETF）和国际电信联盟（ITU）共同制定的一个国际开放标准。北电网络一直支持用创新的方式来使用互联网，是创建Megaco/H.248标准的发起人。 * * 性质（Property）：服务状态、媒体信道属性等；如：处于通话/空闲等状态信息 信号（Signal）：例如拨号音、DTMF信号等；如：拨号音/回铃音等音资源，由终端承载，但不用它来表示，是通过Package来表示的。 * 优先权（Priority）：提供关联的优先处理信息；共有0～15个优先权。 * * * ADD：Add a terminal to a context;or create a context when contextid is not specified; MODIFY：modify the property/event or signal parmeters of a terminal Substract:delete a terminal from a context;delete the context if there is no more terminals in the context Move:move a terminal from one context to another Auditvalue:obtain the current suatus,event,signal and statistics information of a terminal Auditcapability:obtain the possible capacity (characteristics,event,signal) of a MG Notify:notify the observedevent of a MG to MGC Servicechange:mgc ?mg:start service,quit service;mg ?mgc:start service,quit service,registration * ADD：Add a terminal to a context;or create a context when contextid is not specified; MODIFY：modify the property/event or signal parmeters of a terminal Substract:delete a terminal from a context;delete the context if there is no more terminals in the context Move:move a terminal from one context to another Auditvalue:obtain the current suatus,event,signal and statistics information of a terminal Auditcapability:obtain the possible capacity (characteristics,event,signal) of a MG Notify:notify the observedevent of a MG to MGC Servicechange:mgc ?mg:start service,quit service;mg ?mgc:start service,quit service,registration * ADD：Add a terminal to a context;or create a context when contextid is not specified; MODIFY：modify the property/event or signal parmeters of a terminal Substract:delete a terminal from a context;delete the context if there is no more terminals in the context Move:move a terminal from one context to another Auditvalue:obta