VoIP_training_notes(Rev_1)Voice Network & Data Network Voice Network PSTN PSML Data Network IP ATM Frame Relay PSTN versus IP PSTN network Analog (Digital can be defined) Circuit switching Design for Voice transmission Extended use for Data transmission IP network Digital Packet switching Design for Data transmission Extended use for Voice transmission (VoIP) What is VoIP? VoIP Voice over IP (Voice over IP network) Try to transmit voice signal using IP network What is IP? IP Internet Protocol One Protocol in TCP/IP Protocol Stack TCP/IP Protocol Stack One framework for data transmission 5 layers in the Stack TCP/IP Protocol Stack 5 layers Each layer has many protocol choices Application Transport Network Data link Physical FTP, HTTP, SIP TCP, UDP IP Ethernet, Sonet WDCT, DECT TCP/IP Protocol Stack Each lay……