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Cingular GPRS Raven User Guide Version 2.01 69
AT Commands
The Local network for the Raven is the one to which it is connected physically via
the serial port to your computer, device, hub, or switch. The Raven has the ability to
provide some NAT (network address translation) to pass communication from the
GPRS network and the Internet to the local device(s) and network. On the local net
-
work, the Raven acts as a Host.
TABLE 5. Local Network and Host Modes
Command Parameters Details
+++
The "+" is ASCII 0x2B.
none AT Escape sequence Not proceeded by AT.
If the Raven is in a data mode (any mode other than
PassThru), this command causes the modem to re-enter
AT command mode. There must be an idle time (set by
S50) on the serial port before and after this command.
Note: The detection of +++ is disabled if DAE=1. See
“DAE=n” on page
76.
AIP=n n=0
n=1
Allow only the IP specified in S53 to connect when UDP
auto answer is enabled (S82=2).
Allow any incoming IP to connect when UDP auto
answer is enabled (S82=2).
Always subject to any Friends filters that may be defined
HOR=n
n=0
n=1
Half-Open Response - In UDP auto answer (half-open)
mode:
No response codes when UDP session is initiated
RING CONNECT response codes sent out serial link
before the data from the first UDP packet.
Note: Quiet Mode must be Off.
MDhh hh (hex byte) =
00 - normal
01 - SLIP mode
02 - PPP mode
03 - UDP mode
04 - TCP mode
07 - PassThru
Default power-up mode
When the Raven is power-cycled, it may enter the mode
specified by this command after 5 seconds. On startup,
typing ATMD0 within 5 seconds changes the mode to
normal (AT command) mode.
See also S53 to set the port for UDP or TCP.