Datasheet
INSYS ETHERNET 5.X AT Command Reference
Nov-06 51
ATA
Manual connection acceptance
The device accepts an incoming connection.
The command will only work of the device has previously received packets at
the local port and has issued "RING".
AT&C<n>
DCD behavior
AT&C0 DCD always on
AT&C1 DCD only on with existing connection (default)
ATD<IP ad-
dress>:<port>
or
ATD“<domain
name>“:<port>
Dial remote terminal
Remote terminal is an IP address:
The remote terminal is specified in the format IP number:port. If no port is
specified, the own port number (set with AT#PORT) is also used for the re-
mote terminal.
Optionally, it is possible to specify information regarding the necessary pro-
tocol (ATDT for TCP/IP or ATDU for UDP/IP), before the remote terminal is
specified. The remote terminal must be set to the according protocol.
Example:
ATDT192.168.100.111:1234 dials port “1234” of the IP address
192.168.100.111 . Log: TCP/IP.
ATDT192.168.100.111:1234 dials port “1234” of the IP address
192.168.100.111 . Log: UDP/IP.
UDP protocol:
An empty UDP packet is sent as connection request.
For UDP connections a CONNECT is issued in each case, because there is no
connection management for UDP and therefore no confirmation from the
recipient to the sender. The data is distributed into the network without con-
firmation.
The remote terminal is a domain name:
If the remote terminal is a domain name, the INSYS Ethernet must first query
the IP address of the domain from a domain name server to be able to estab-
lish a connection. A DNS server must be defined using the command
AT#DNS.
Example:
ATD“www.google.com“:80 dials the domain www.Google.com at port 80.
If no port is specified, the own port number (set with AT#PORT) is also used
for the remote terminal.
AT&D<n>
Behavior with DTR drop
When the DTR line is deactivated during an existing connection, the function
set through AT&D is executed.
AT&D0 Ignore DTR drop (for operation at applications which do
not serve the DTR line)
AT&D2 A DTR drop causes the device to terminate the connection
(default).
AT&D3 A DTR drop caused the module to terminate the connec-
tion and perform a reset.