Ebyte E840-DTU User Manual page 13

GPRS
Function： Query whether TCP link is connected
Format： Query
TX：AT+LINKSTA2<CR>
return：<CR><LF>+OK=<sta><CR><LF>
Parameter： Sta whether TCP link connection is established，Connect(TCP connection)/ Disconnect(TCP cut off)
AT+LINKSTA3
Function： Query whether TCP link is connected
Format： Query
TX：AT+LINKSTA3<CR>
return：<CR><LF>+OK=<sta><CR><LF>
Parameter： Sta whether TCP link connection is established，Connect(TCP connection)/ Disconnect(TCP cut off)
AT+SOCK
Function： Set/query the network protocol parameter format.
Format： Query
TX：AT+SOCK<CR>
return：<CR><LF>+OK=<protocol>,<ip>,< port ><CR><LF>
Set
TX：AT+SOCK=<protocol>,<ip>,< port ><CR>
return：<CR><LF>+OK<CR><LF>
Parameter： protocol
TCPC
UDPC
ip
port
AT+REGMOD
Function： Set the query registration package mechanism.
Format： Query
TX：AT+REGMOD<CR>
return：<CR><LF>+OK=<status><CR><LF>
Set
TX：AT+REGMOD =<status><CR>
return：<CR><LF>+OK<CR><LF>
Parameter：status registration package mechanism
EMBMAC
EMBCSTM
OLMAC
OLCSTM
OFF
AT+REGINFO
Function： Set the query custom registration package content
Format： Query
TX：AT+ REGINFO <CR>
return：<CR><LF>+OK=<data><CR><LF>
Copyright ©2012–2017, Chengdu Ebyte Electrical Technology Co., Ltd.
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protocol type， TCPC / UDPC
corresponding TCP client
corresponding UDP client
The IP address or domain name of the target server when the module is set to "CLIENT"
Server port number, in decimal, less than 65535.
adds MAC/IMEI as registration packet data before each packet sent to the server.
adds custom registration package data before each packet is sent to the server.
sends a MAC/IMEI registration packet only when it is first linked to the server.
sends a user-defined registration package only the first time it is linked to the server.
Disables the registration of the packet mechanism.
E840-DTU（GPRS-03）User Manual