Data transmission apparatus and method for transmitting data between physical layer side device and network layer device

摘要: The present invention discloses a data transmission apparatus and method for transmitting between physical layer side device network device, which encapsulating novel LAPS framing-de-framing into SPE/VC of HDLC-like frame using variable SAPI value. encapsulation consists the start Flag Sequence, address field (SAPI, Service Access Point Identifier), control (0x03), Information (Ipv4, Ipv6, or PPP protocol unit), FCS (Frame check sequence) ending Flag, Address field, Control (two octets), Sequence. Sequence (0x7E) identifies beginning/end frame. can be used to adapt Internet/Intranet telecommunication infrastructure, applied devices such as core edge routers, switch devices, IP based accessing equipment, line cards, interfacing units in high speed, e.g. Gigabit applications, adapting directly SDH/SONET simplified SDH/SONET, other devices.