Packet switched data network , psdn 包交換數(shù)據(jù)網(wǎng)
Telecontrol equipment and systems - telecontrol protocols compatible with iso standards and itu - t recommendations - functional profile for providing the connection - oriented transport service in end system connected via permanent access to a packet switched data network 遙控設(shè)備和系統(tǒng).與iso標準和itu - t推薦規(guī)程一致的遙控協(xié)議.在經(jīng)由永久性存取與包交換數(shù)據(jù)網(wǎng)絡(luò)連接的端系統(tǒng)中提供定向連接傳輸服務的功能界面
Telecontrol equipment and systems - part 6 : telecontrol protocols compatible with iso standards and itu - t recommendations ; section 601 : functional profile for providing the connection - oriented transport service in an end system connected via permanent access to a packet switched data network 遠程控制設(shè)備和系統(tǒng).第6部分:與iso標準和itu推薦相兼容的傳輸協(xié)議.第601節(jié):經(jīng)過不變存取與包開關(guān)數(shù)據(jù)網(wǎng)絡(luò)相連系統(tǒng)定向連接傳輸協(xié)議
Telecontrol equipment and systems - part 6 - 601 : telecontrol protocols compatible with iso standards and itu - t recommendations - functional profile for providing the connection - oriented transport service in an end system connected via permanent access to a packet switched data network 遠動設(shè)備和系統(tǒng)第6 - 601部分:與iso標準和itu - t建議兼容的遠動協(xié)議在通過永久接入分組交換數(shù)據(jù)網(wǎng)連接的端系統(tǒng)中提供基于連接傳輸服務的功能協(xié)議集
Telecontrol equipment and systems . part 6 : telecontrol protocols compatible with iso standards and itu - t recommendations . section 601 : functional profile for providing the connection - oriented transport service in end system connected via permanent access to a packet switched data network 遙控設(shè)備及裝置.第6部分:與iso標準和itu - t推薦標準相一致的遙控協(xié)議.第601節(jié):通過信息包轉(zhuǎn)換數(shù)據(jù)網(wǎng)絡(luò)的永久入口連接端系統(tǒng)提供面向連接傳輸服務的功能剖面
As requirement changes and technology progresses in telecommunication , the traditional pcm has more drawbacks . at the same time , packet switched data networks has grown significantly in quality of service . ip telephone is pretty promising due to its advantages , such as using statistical multiplexing , high resource usage , flexible bandwidth , multi - user calling , voice and data mixing and so on 傳統(tǒng)的電話隨著通信業(yè)務需求的變化和技術(shù)進步,其不足之處日漸突出起來,而與此同時,分組數(shù)據(jù)網(wǎng)絡(luò)在網(wǎng)絡(luò)經(jīng)濟中和業(yè)務質(zhì)量控制方面取得了巨大的進步和發(fā)展。