Thanks for your help. However, my unit is currently locked by PRIMUS and I am rookie to these stuff. I am afraid of that given instruction may not work as I have seen somebody else has tried it.
I have read threads relating to GIZMO SPA2102 units served by Sun Rocket in the past, and some people suggests set up a WEBSERVER (IIS 7 or Apache) and use some kind of sniffing program like wireshark to find out server IP address and look at data captured by wireshark...etc.
I have limited knowledge of how to set up and run above programs correctly and successfully since I am not a type of IT guy, even I can set up my own router/modem at home.
In fact, I did enable ISS7 and installed wireshark, but am unable to set up a web page correctly on ISS7 server to sniff .cfg file (or password) by downloading it from the SPA2102 Su unit, and am unable to interpret outputs from wireshark.
So, anyone could please show me how to set up a web page to be run on ISS7 webserver and how to interpret outputs from wiresharks, then I greatly appreciate it.