There will be a couple of issues for transition. The first is the infrastructure, and the second will be the actual telephone number. The telephone number is the simplest, so it will make sense to discuss that now. The nation will move to a 3+12 telephone number. The country code will be +883, and the domestic number will be 12 digits long. This will be the consumer’s NIN + a single digit. This will make it easier for the consumer to remember their new number since they will likely focus on remembering their NIN. Where there is a new and old telephone number, outgoing calls will always display the new telephone number as the caller ID. The old telephone numbers will work for 1 year. After that, any old telephone numbers will cease to work. This includes cellular and terrestrial services. Any new numbers will be for the new system, and no old number will be offered as an option. When the old system goes down, then the caller will hear that the number is no longer functional, and to contact the person through another means.
In remote communities without any phone service – LTE/5G towers will be built. This will provide for a reliable connection to the outside world. It would be doubtful that such a community will have grid connected services such as electric. With that said, there will be no way to run BPL (Broadband over Power Line) service to the community. This will mean cellular is the only realistic option. The customer can acquire phone service if they wish to have it. They will receive the newly formatted telephone number.
Rural communities will likely have cellular services that would be LTE/5G. If so, nothing will change there. Some may have a grid connected telephone line in their home. If this is the case, they will have to eventually replace their connection to an ATA (Analog Telephone Adapter), and connect that to the router. They can get a telephone repair person to transition their house wiring to connect to the ATA which will be a temporary stop gap measure. They will need a BPL modem to provide a basic dial tone, and service.
In the city, most people will have a cellular phone as their primary device. Most people don’t want, nor need a home phone line. However, if they wish to acquire a new line, they will receive a new phone number from the transition telephone service. If they want a home phone, then they will need a SIP phone. This could be in the form of a desk phone, or a Wifi Phone. The customer can also choose to buy a DECT phone, and connect the DECT Access point to the router, or an ATA. Most likely, the only reason someone might want a home phone is for fax capability. In the end, a phone provider will support for SIP based phone lines.