/members/sreekant/Good question. Laptop works on battery pack up. So you need a back up power supply for modem/wifirouter..Usually an UPS is used. If UPS ( Uninterrupted Power Supply with a 12 Volt battery usually) not possibleDepending on the ,modem you can have a seperate battery backup for the modem. ( mention model )As stated earlier only NETONE will work with direct telephone. connection.usually there will be a built in dialup modem in the laptop.Broadband signals need the ADSL modem.
The signals from phone line are analog.....and your computer needs digital signals to understand,though your laptop may have a built in 56k modem....it cannot do the job of a router..thats why u need to demodulate the incoming analog signals !!!
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