point-to-point link
1.Once a device gains control of the loop, it sets up a point-to-point link between the two devices.
3.The subject analyzes the characteristics of PPP(Point-to-Point Protocol ), LAPS (Link Access Procedure--SDH )and GFP(Generic Framing Procedure ) .
4.In Linux, we developed MPD (Multi-link Point-to-Point Protocol Deamon) software package, which is based on MP (Multi-link Point|to-Point Protocol).
5.The Point-to-Point Protocol, an IETF standard, which manage the dial-up link.
7.PPP (Point-to-Point Protocol) is one of the protocols,which is applied most extensively in WAN at present. PPP is the link layer protocol design for transmitting the data packets between the coequal units.
9.For the software design, this dissertation presents complete stack frame of bluetooth gateway, host control interface (HCI), logical link control and adaptation protocol (L2CAP),RFCOMM protocol, service discovery protocol (SDP), point to point protocol (PPP),and presents the implementation, detail about state machines and functions of bluetooth protocol stack layers.
10.In GPRS network,the physical layer applies GPRS protocol,the link layer adopts point-to-point protocol,the application layer uses Socket function call of TCP / UDP to realize UDP data message or TCP connection between client and server. The software flowchart is offered,which shows the embedded communication system is an important means for communication between remote control and embedding system.

