Socket behavior
Take the source address, source port, and destination port fields from the Receive (RX) frame
n
and use those respectively as:
The destination address, destination port, and source port fields for the Transmit (TX) Request
n
frame.
A connection is closed when:
The remote end closes the connection.
n
No data has been sent or received for longer than the socket timeout set by
n
Connection
A Transmit (TX) Request frame is sent with the CLOSE flag set.
n
API mode behavior for incoming UDP data
When the
IP (IP Protocol)
Modem's network port specified by the
serial port as a
Receive (RX) Packet: IPv4 - 0xB0
To send data from the XBee Smart Modem to the remote destination, use the
IPv4 - 0x20
frame with the corresponding address fields received from the Receive RX frame. In other
words take the source address, source port, and destination port fields from the Receive (RX) frame
and use those respectively as the destination address, destination port, and source port fields for the
Transmit (TX) Request frame.
Transparent mode behavior for outgoing TCP and SSL
connections
Note
SSL is not currently enabled for the LTE-M product.
For Transparent mode, the
Address)
and
DE (Destination Port)
(UDP) and outgoing connections (TCP and SSL).
To initiate an outgoing TCP or SSL connection to a remote host, send data to the XBee Smart
Modem's serial port. If
was successfully established, otherwise the value of CI indicates why the connection attempt failed.
Any data received over the connection is sent out the XBee Smart Modem's serial port.
A connection is closed when:
The remote end closes the connection.
n
No data has been sent or received for longer than the socket timeout set by
n
Connection
You make and apply a change to the IP, DL, or DE.
n
Transparent mode behavior for outgoing UDP data
To send outgoing UDP data to a remote host, send data to the XBee Smart Modem's serial port. If
(Protocol/Connection Indication)
value of CI indicates why the data failed to be sent.
Digi XBee3 Cellular LTE-M Global Smart Modem User Guide
Timeout).
setting is UDP, any data sent from a remote host to the XBee Smart
C0 (Source Port)
IP (IP Protocol)
setting specifies the protocol and the
settings specify the destination address used for outgoing data
CI (Protocol/Connection Indication)
Timeout).
reports a value of 0, the data was successfully sent; otherwise, the
API mode behavior for incoming UDP data
setting is sent out the XBee Smart Modem's
frame.
reports a value of 0, then the connection
TS (IP Server
Transmit (TX) Request:
DL (Destination
TM (IP Client
CI
139
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