iChip’s iRouter mode is used to provide a gateway to a multitude of LAN or WiFi devices through a single dialup or cellular link. In this configuration, iChip’s DHCP server may be used to assign IP addresses to the local hosts on the LAN/WiFi side. iChip also uses a Network Address Translator (NAT) to translate between local and public IP addresses.
Typical applications
- Connect multiple sensors using wired LAN to an single cellular gateway
- Sharing one cellular Internet connection among a cluster of vending machines, communicating over 802.11g
When iChip is in iRouter mode, it routes packets between its two communication platforms utilizing a Network Address Translator (NAT) to translate between the internal IP address space used on the LAN/WiFi side and the real IP address used on the dialup/cellular side. The following diagram illustrates the iRouter mode of operation:
iChip continues to respond to AT+i commands issued by the application microcontroller on the embedded interface, allowing it to communicate with the other devices on the local network or directly out to the Internet.
This mode is supported on the following Connect One products:
