愛立信m-mgw的接口與系統(tǒng)架構(編輯修改稿)
2025-02-07 21:23 本頁面
【文章內容簡介】 ? ISL以 1＋ 1或 2＋1的方式冗余機筐的連接MainsubrackGPBSCBSCBSXBSXBExtensionsubrack4MSBETSCBSCBGPBISLExtensionsubrack1DEVETSCBSCBMPExtensionsubrack2DEVETSCBSCBMPExtensionsubrack3MSBETSCBSCBGPBTUB板子類型? 板子類型– General Processor Board (GPB)– Switch Core Board (SCB)– Switch Extension Board (SXB)– Timing Unit Board (TUB)– Media Stream Board (MSB)– Exchange Terminals (ET)板子類型? General Processor Board (GPB)– 主要處理器– 閃存盤– 以太網接口 (10/100)和 RS232串口– 錄音通知 ? Switch Core Board (SCB)– ATM交換核心– 4個 ISL– 時鐘分布 板子類型? Switch Extension Board (SXB)– 4個 ISL– 用來連接擴展機筐 ? Timing Unit Board (TUB)– 系統(tǒng)時鐘– 外同步輸入? Media Stream Board (MSB) – 一個 BP+16個 DSP用于媒體流的處理– 媒體流相關功能，如語音編解碼、回升抑制等– IP termination 板子類型? ETMC1– 8 E1 / T1 interfaces, 2 / Mbps– TDM / ATM– AAL2 Multiplexing– AAL1 Circuit Emulation– Inverse Multiplexing for ATM (IMA) ? max 8 links for one connection between two nodes? ETM4– 2 STM1 / OC3 interfaces, 155 Mbps– ATM– AAL2 multiplexing 板子類型? ETMC41– STM1 / OC3 interface, 155 Mbps (63 E1 or 84 T1 logical c
黨政相關相關推薦
鄂ICP備17016276號-1