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For UDP the 1
st
<n> bytes of each datagram sent will be set to the contents of the ID field, data follows
immediately after the ID; for TCP the ID is transmitted once immediately after the connection is established.
Ignore String
When the “Ignore String” field is not blank (empty) the router will strip any character sequence that
matches the “Ignore String” from the data stream received from the serial port.
Connect To
Determines how the router behaves when it receives an “ATD” command on the serial port.
• Profile Connect using “Data Connection Profile”
• Circuit Establish a circuit switched data connection
• Packet Connect to cellular packet network in PPP pass through mode
• DialString Examine the dialed digits and connect to Profile, Circuit or Packet as appropriate
DTR Action
Determines how the router responds to change of state of the serial port DTR line
• Ignore Take no action
• Command High to Low transition of DTR causes the router to enter command mode
(does not end call)
• Hangup High to Low transition of DTR causes the router to end call and enter
command mode
• High AutoDial Low to High transition of DTR causes the router to dial the Auto Dial
Number, High to Low transition of DTR causes the router to end call and
enter command mode
• Low AutoDial High to Low transition of DTR causes the router to dial the Auto Dial
Number, Low to High transition of DTR causes the router to end call and
enter command mode
• Low Pass To ATPort When DTR is low pass all AT commands directly to internal cellular data
engine.
DCD Action
Determines how the router controls the state of the serial port DCD line
• Always On DCD is always on
• Connect On DCD is on when a connection is established in response to an ATD command or
DTR auto dial.
Revision 1.55 NetComm Limited
March 2009
44