IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

IPC@CHIP Documentation Index
Introduction
About PPP
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PPP Interface - SC12 @CHIP-RTOS V1.10
Here is a short description of how to configure the IPC@CHIP PPP server.
The PPP server is available starting with @CHIP-RTOS version SC12V0067PPP. (There also
exists a @CHIP-RTOS version SC12V0067 without the PPP server.) The PPP client API is
available starting with @CHIP-RTOS 070.
The PPP client and server API calls are part of the TCP/IP API. These API calls are described
in the TCP/IP API documentation. Only configuration of the PPP server is described here.
Topics:
❍ About PPP
❍ Configuring the PPP Server
❍ PPP Server API
❍ PPP Client API
❍ Available Examples
Since SC12 @CHIP-RTOS version 067 Beta a PPP server is available in the SC12.
PPP (the Point to Point Protocol) is a mechanism for creating and running TCP/IP
over a serial link - be that a direct serial connection (using a null-modem cable),
or a link made using an analogue modem.
Other computers can dial into the IPC@CHIP PPP server and communicate via the TCP/IP link
using FTP, Telnet, Web, etc. in the same manner as with an Ethernet TCP/IP link.
One major difference between a PPP and an Ethernet connection is of course the speed.
A standard Ethernet connection operates at 10 Mbs maximum theoretical throughput,
whereas an analogue modem operates at speeds up to 56 kbps.
PPP is strictly a peer to peer protocol; there is no difference between the machine
that dials in and the machine that is dialed into. However, it is still useful to think
in terms of servers and clients. When you dial into a site to establish a PPP connection,
you are a considered the client. The machine to which you connect (e.g. the IPC@CHIP) is
considered the server.
PPP on the IPC@CHIP includes the subprotocols LCP and NCP(IPCP).
Supported authentication protocols are PAP and CHAP.
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