Data Communication and Host Modes
FIGURE 5. Wireless Ace: Telnet Configuration
PPP Mode
In PPP mode, the Raven X acts as a PPP server, providing an IP address, and DNS servers (if available) to the Host. PPP mode is entered from the AT mode by using any of the following com- mands:
AT\APPP
ATDT10.0.0.1
ATDT10001
ATD#19788 or #777
CLIENT
In response to any of the preceding commands, the modem will respond with CONNECT a car- riage return and new line and is ready for the host to begin PPP negotiations. The IP received by the host in the resulting negotiation will either be a private
FIGURE 6. Wireless Ace: PPP/Ethernet
Using a private IP insulates the PPP client from changes in IP addresses of the underlying net- work. The will perform basic
If a public IP address is being used, any changes in the IP (as determined by the wireless network) will result in the PPP link to the host being disconnected, requiring the host to reinitiate it. The public IP is passed to the host in the PPP negotiations, so when the network forces a change, the modem has to force the host to renegotiate the PPP link to make this happen.
Raven X | 21 |