Technical information

Chapter 2: AT+i Commands Reference
May 31, 2008 AT+i Commands Reference Manual 2-53
dialup/cellular side; when CPF=1, they are directed towards the WiFi side. While processing
AT+i commands, W24 continues to route packets seamlessly between the two platforms.
W24's responses to AT+i commands depend on the CPF value, as well. For example, the IP
returned by AT+iIPA? command while CPF=1 is the WLAN-side IP.
Figure 2-3: AT+i Interface to W24
Baud Rate Settings and Auto Baud Rate
iRouter mode supports all host and modem baud rates supported by W24. However, when auto
routing is set (ARS=1), W24 does not support Auto Baud Rate. This is due to the fact that in
iRouter mode, W24 starts routing packets immediately after power-up, and skips auto baud rate
determination.
Therefore, when configuring W24 for auto routing (ARS=1), you must set a fixed baud rate in the
BDRF parameter.
iRouter and Power Save Mode
W24 can be configured for Power Save mode while acting as a router. Note, however, that there is
no buffering of packets in iRouter mode. The first packet arriving to W24 while in Power Save
mode triggers W24 to wake up and go online on the cellular or dialup modem. Only after
establishing a connection, does W24 start routing packets. The packets received during
connection establishment are lost.
+iSTRR - Start Router
Syntax: AT+iSTRR
Causes W24 to immediately enter iRouter mode.
Upon entering iRouter mode, W24 immediately goes online on
the dialup/cellular side. Packets are not buffered during
dialup/cellular connection establishment. After establishing the
connection, W24 starts the routing service.
Result Code:
I/OK When command is received and about to be processed.