You will need to go into the settings of the modem. From there you can determine which sites you would like to block.
Yes, the BSNL modem can be used with any other broadband connection that you have, and the same is the thing for other companies too. You should have no problem using it with whatever setup you have.
To block bsnl sim in online one can go to the computer security settings or their anti virus settings and add the bsnl sim in to their block list to prevent it from showing up online.
Yes, most modems today follow Cablelabs Docsis standards.
A modem can only support one device for internet connection.
You should have no problem using the BSNL modem with any Sure BSNL modem ( likely to be ZTE manufacturing) may be used with any other broadband connection and the same is applicable for other companies too.
http://wiki.answers.com/Q/How_I_Can_configure_telenet_tndsl_2120_Adsl2_Router_modem_to_connect_bsnl_broadband_service"
To register/signup for BSNL Dataone broadband you will have to ring them up or access their website. From there they will take you through the process of ordering BSNL Dataone broadband and will be able to answer any of your questions.
The company BSNL located in Chennai, India, is a telephone company. The official BSNL website outlines the products and services they offer, in addition to a short history of the company.
To block the SIM card, a person must call the company's customer service line. They will ask identifying questions, and then they will block the SIM card.
Search BSNL website you will find answer
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BSNL allows you to pay bills online if you live in India. However, their website does not appear to have a publicly viewable address within the Pune District of India.