Multitech MTCBA-C-IP-N12 Reference Manual page 179

...
AT+WSTX=1,0,500,<data>
+CME ERROR : 3
+WSTE: 0,114
AT+WGSS=1
+WGSS: 1,2,1,0,0,0,0
OK
AT+WOSK=1,216,37,68,117,250
+WOSK: 1,0
OK
+WSKS: 1,0,1
...
Multi-Tech Systems, Inc. CDMA Wireless AT Commands (PN S000294J)
Other +WSTX commands and +WSTX responses for data transfers.
Send 500 bytes of data on UDP socket zero.
Lost UDP socket zero connection.
Display UDP connection status.
UDP status: PPPstate "open" and Socket zero "closed".
Re-open a UDP socket to IP address 216.37.68.117 port 250.
UDP socket zero allocated.
Unsolicited response; UDP socket zero is open.
Host application specific recovery process.
Chapter 22 – AT Command Examples
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