User manual
Copyright © Dr Robot Inc. 2006 
103
With modem_control_in Active          0  0  1  0 
With a specific start character          0  0  1  1 
Manual connection   0 1 0 0 
Autostart   0 1 0 1 
Hostlist  0 0 1  0       
d) Datagram Type 
Directed UDP   1 1 0 0 
e) Modem Mode 
Full Verbose   1 0 1 1 0 
Without Echo   0 0 1 1 0 
Numeric modem result codes        1  0  1  1  1 
a)
Incoming Connection 
Never Accept Incoming  Rejects all external connection attempts 
Accept with modem_control_in Active  Accepts external connection requests only 
when the modem_control_in input is asserted. 
Cannot be used with Modem Mode 
Always Accept  Accepts any incoming connection when a 
connection is not already established. Default 
setting 
b)
Response 
Character Response  A single character is transmitted to the serial port when there 
is a change in connection state: 
C = connected, D = disconnected, N = host unreachable. 
This option is overridden when the Active Start Modem Mode 
or Active Start Host List is in effect. Default setting is 
Nothing (quiet). 
No Active Startup Does 
not
 attempt to initiate a connection. Default setting 
With Any Character  Attempts to connect when any character is received from the 
serial port 
Accept with 
modem_control_in 
Active 
Attempts to connect when the modem_control_in input 
changes from not asserted to asserted 
With a Specific Start 
Character 
Attempts to connect when it receives a specific start character 
from the serial port. The default start character is carriage 
return 
Manual Connection  Attempts to connect when directed by a command string 
received from the serial port. The first character of the 
command string must be a C (ASCII 0x43), and the last 
character must be either a carriage return (ASCII 0x0D) or a 
line feed (0x0A). No blanks or space characters may be in the 
command string. Between the first and last command string 
characters must be a full or partial destination IP address and 










