Character Based Framing Frame SYNSYN STX Header Packet ETX CRC SYN SYN SYN is synchronous idle STX is start text ETX is end text Standard character codes such as ascll and ebcDic contain special communication characters that cannot appear in data Entire transmission is based on a character codeCharacter Based Framing Frame SYN SYN STX Header Packet ETX CRC SYN SYN SYN is synchronous idle STX i s start text ETX is end text • Standard character codes such as ASCII and EBCDIC contain special communication characters that cannot appear in data • Entire transmission is based on a character code Eytan Modiano Slide 4