The 10 numbers will be attached to a SIM or a phone virtually. It works just like a computer. 10 users will have different passwords and will use the same phone. Apparently this technology is used for 2 numbers by SingTel of Singapore and Etisalat of UAE.

Developed by Bharti-owned Comviva Technologies, the application comes embedded with the SIM card and offers users to “opt” for his number whenever the user requires it. The user group will be password protected with each user having his own password to access his phone. Airtel is reportedly undertaking field trials of the service. Comviva, in co-operation with South African operator MTN, already has the service in South Africa. Airtel expects the technology to be operational in two months time and India might see the first services roll out in the rural areas of the country. (TechTree)

Sounds intriguing but I am a little confused. The password would be used for outgoing calls which can be clearly segregated. What about incoming calls? How can we differentiate that?

It is clear that this service will not be used by 10 different people as purported. If 10 people really use this service then it is as good as a landline. Only difference is everyone has their own number. That would defeat the purpose of owning a mobile. With mobile’s and the rate plans so cheap this service looks obsolete even before it is launched.

Even for single person use, more than 2 numbers is a mess. I have only one phone and one number and quite happy with it. May be I am not that busy. Hold on. Let me rephrase that. I don’t receive as many calls and hence did not feel the urge to have 2 numbers or go for a dual SIM technology.