Wireless provider MetroPCS announced on Tuesday that it will soon offer a GroupLINE service, allowing users to get rid of their wired home lines in favor of a flat-rate, contract-free wireless service. GroupLINE will allow as many as five MetroPCS Family Plan subscribers to receive calls on one shared main line that will ring all of the subscribers simultaneously, like a home number would. They still retain their regular mobile numbers, however. A shared voicemail can also be accessed by all users on the plan.

Just like at home, once a call is picked up, other will also be able to join in, just like picking up multiple receivers at home.

It's not clear how users switch from their "home" number to their cellular one when making calls, but it is likely that the service is meant for inbound calls only, with the shared number never used on outbound calls. The elaborate call forwarding GroupLINE feature will add $5 to the monthly fee of a MetroPCS Family Plan.