GSM 协议栈设计结构GSM 协议栈设计结构 Architecture of GSM[pic] CC1 SummaryIn GSM protocol, both SS protocol and CC protocol are sub-protocol of CMprotocol. The CC entity uses box to communicate with API, MM and RR. EachCC entity shall communicate with the correspondent peer entity using itsown MM connection.[pic]2 Object Model DiagramIn CC module, different CC context needs interwork with others, so all CCcontext are organized in a queue. Every CC context will manage a call.[pic]3 Objects DescriptionThe functions of CC entity as following:Call establishment procedures;Call clearing procedures;Call information phase procedures;Miscellaneous procedures.DTMF manage;User notification;In call Modify manage;CRSS function manage.4 CC State Chart[pic]|FSM |C……