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

gateway in the PPPSERVER section of the chip.inifor the PPP server interface, it
becomes the default gateway for all interfaces when a PPP link to the server is
established. During a PPP server connection the command ipcfg indicates this default
gateway. After the PPP session, the old gateway (if any) for the Ethernet interface will be
restored. As of @CHIP-RTOS version 070, the TCP/IP API supports adding and deleting
a default gateway:
10. Choose authentication mode with the AUTH directive.
11. Initialize the analogue modem.
You can define three sets of modem initialization parameters. These parameters are used to
initialize the modem at the start of the IPC@CHIP @CHIP-RTOS and after a modem hang-up
following a PPP session.
Each of the three parameter sets consists of the following four parameters:
■ INITCMD string - Command sent to the modem to initialize it.
■ INITANSWER string - Expected modem response to initialization command.
■ INITTIMEOUT integer - Number of seconds to wait on answer from modem.
■ INITRETRIES integer - Number of times to repeat modem initialization sequence if a
previous attempt fails.
Example:
INITCMD0=ATZ
INITANSWER0=OK
INITTIMEOUT0=2
INITRETRIES0=3
INITCMD1=AT&D0
INITANSWER1=OK
INITTIMEOUT1=2
INITRETRIES1=3
INITCMD2=AT
INITANSWER2=OK
INITTIMEOUT2=2
INITRETRIES2=2
A timeout value 0 means wait forever for the modem's answer.
If you enter the string NULL at an INITANSWER (e.g. INITANSWER0=NULL), the IPC@CHIP
PPP server will not wait for an answer from the modem.
12. Define a maximum of three modem commands for getting connected to the remote peer.
Example:
CONNECTMSG0=RING
CONNECTANSWER0=ATA
CONNECTTIMEOUT0=0
CONNECTMSG1=CONNECT
CONNECTTIMEOUT1=60
These are the default values for modem connect commands.
In this example the PPP server waits forever for the RING message and sends
an ATA to the modem if it responds to the RING. After that the server waits
a maximum of 60 seconds for a response to the CONNECT message. The modem link
is established. The server now establishes the PPP connection to the remote
client.
Note:
Do not use the AT command ATS0=1. This will cause the modem to automatically answer
Page 354 / 400