One of the biggest benefits of VoIP is probably the portability it offers. Since an IP address is what identifies each IP phone, the user can be reached at the number regardless of where he plugs the phone in. While normal telephones are permanently linked to the telephone lines, the ATA can be taken anywhere, and by simply attaching it to a normal telephone and an internet connection, one can make VoIP calls, without the roaming charges as in the case of mobile phones. This makes the system portable, flexible and cost-effective.

In the long term, the scalability of VoIP networks also proves to be a VoIP calls is also a very reliable technology. In a PSTN network, if a line is down, it is completely cut off and calls cannot be made from or to telephones in that line. However, in the case of VoIP, multiple routes can be established to reach a node,and hence downtime is negligible or nil.

VoIP is clearly the future of telephony as it combines a bouquet of services ranging from video conferencing to call-forwarding at a very low cost. With the spread of broadband as well as user awareness, VoIP is slowly picking up at the user level in India, but it is mainly the enterprises that have gone gaga over VoIP for both long distance calling as well as internal communications.