Synaccess Networks NP-0801DTM - Manual (Page 232)

CUSTOM AT COMMANDS
HSPA+ AT Commands Reference Guide 232
OK
AT#SSENDUDP=1,<RemIP1>,<RemPort1>
>response to first host
OK
SRING: 1 // UDP data from a remote host available
AT#SI=1
#SI: 1,22,23,24,0 // 24 bytes to read
OK
AT#SRECV=1,24
#SRECV:1,24
message from second host
OK
AT#SS=1
#SS: 1,2,<LocIP>,<LocPort>,<RemIP2>,<RemPort2>
OK
Remote host has changed, you want to send a reponse:
AT#SSENDUDP=1,<RemIP2>,<RemPort2>
>response to second host
OK
Notes
„
After SRING that indicates incoming UDP data and issuing #SRECV to receive data itself, through #SS is possible
to check last remote host (IP/Port).
„
If successive resume of the socket to online mode Is performed(#SO), connection with first remote host is
restored.
Send UDP Data to a Specific Remote Host Extended
While the module is in command mode, this command allows the sending of data over UDP to a specific remote
host including all possible octets (from 0x00 to 0xFF).
As indicated about #SSENDUDP:
UDP socket has to be previously opened through #SLUDP / #SA, then you can send data to different remote hosts.