AT+i Programmer's Manual - SE Spezial-Electronic AG

5.3 +iTUP — Triggered Internet Session Initiation
Syntax: AT+iTUP:
Parameters: n=0..2
Command Options:
Notes:
Result Code:
Enter triggered Internet session initiation mode.
This command is relevant in a modem environment only.
n=0 Disable triggered Internet session initiation mode.
Connection
n=1 Enter triggered Internet session initiation mode. Upon receiving
a hardware signal trigger (Modem RING or MDSEL signal
pulled low), establish a PPP Internet connection and carry out
the IP registration process according to the relevant registration
option parameters.
If any characters are received on the host port prior to receiving
a hardware signal, iChip exits this mode and functions normally.
In this case, to reinstate this mode, issue AT+iTUP=1 again;
reset iChip by issuing the AT+iDOWN command, or recycle
power.
n=2 Always Online mode. Whenever iChip is offline, it
automatically attempts to establish a PPP Internet connection
and possibly carry out the IP registration process according to
the relevant registration option parameters.
iChip disregards this mode and remains offline if: the host issued
the (+++) escape sequence.
Power must be recycled or the AT+iDOWN command issued for
this command to take effect. If iChip is in auto baud rate mode
(BDRF=a), iChip waits for the a character on the host serial port
to resolve the baud rate after rebooting and before going online.
Therefore, it is recommended to set a fixed baud rate in this case.
I/OK If n is within limits
I/ERROR Otherwise
1. When going online in one of these modes, iChip activates its web server if the
AWS parameter is set (AWS>0).
2. In this mode, iChip does not go offline after a completion of any successful or
unsuccessful Internet session started by the host, even if the stay online flag is not used.
3. When a Carrier Lost event is detected, iChip automatically retries to establish a
connection (without performing a software reset), with the following exception: If, at the
time of the detection, the host was waiting for a reply from iChip or was in the process of
AT+i Programmer‘s Manual Version 8.21 5-3