Adcon A73 addWAVE Series User Manual page 61

Then enter
at+wopen=1
and you should get
OK
If you get any other message than "OK," the IP stack needs to be enabled.
You need a special code to do so.
Then enter
AT#VVERSION
and the reply should be
#VERSION: "eDsoft-W302_V2.10 116686 Dec 10 2003 12:20:17"
If not, you have to put the proper IP stack into the module.
If all of the above tests pass, then upgrade the GSM-RTU's firmware to 2.10.0,
using Adcon's A903 Programming device..
APPENDIX
61