what is the server address of bsnl handset is sony ericsson j105i?
what is the server address of bsnl of handset sony ericsson j105i?

Looks like you need set up bsnl GPRS.
You have to use APN : bsnlnet

You can set it from Settings --> Connectivity --> internet settings --> There if you can't find settings for BSNL then create one or edit existing and give "bsnlnet" as APN, leave rest to default.