Chuyển đổi lý thuyết P5

The ATM Switch Model The B-ISDN envisioned by ITU-T is expected to support a heterogeneous set of narrowband and broadband services by sharing as much as possible the functionalities provided by a unique underlying transport layer based on the ATM characteristics. As already discussed in Section 1.2.1, two distinctive features characterize an ATM network: (i) the user information is transferred through the network in small fixed-size packets, called cells1, each 53 bytes long, divided into a payload (48 bytes) for the user information and a header (5 bytes) for control data; (ii) the transfer mode of user information is connection-oriented, that...