Onlogic NWK030 Manual page 15

AT Commands (partial) (cont.)
Establishes a peer-to-peer connection of the socket to the specified remote host on the given remote port, like the BSD connect
routine. If the socket is a TCP socket, the command will perform the TCP negotiation (3-way handshake) to open a connection. If the
socket is a UDP socket, this function will declare the remote host address and port for later use with other socket operations (e.g.
+USOWR, +USORD). This is important to note because if refers to a UDP socket, errors will not be reported prior to an attempt to write
or read data on the socket.
AT+USORD=?
Reads the specified amount of data from the specified socket, like the BSD read routine. This command can be used to know the total
amount of unread data.
AT+USOCL=?
Closes the specified socket, like the BSD close routine. In case of remote socket closure the user is notified via the URC.
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