ADSL: ADSL (Asynchronous Digital Subscriber Line) modems are used for accessing Broadband through telephone lines upto speeds of 12 Mbps depending upon the distance and quality of line.
WiFi: ADSL / VDSL modems with WiFi are suitable for broadband access through wireless i.e. within the home or office. Customers using Laptop may opt for this modem.
TA : Using modems with Terminal Adapter (TA), customers will be able to make voice calls through BSNL server. BSNL is planning to launch this service shortly.
VDSL: VDSL (Very high Speed Digital Subscriber line) modems are used for accessing very high speed Broadband of 16 Mbps and above. Upto a distance of 1 Km VDSL modem can be used.