A method for originating and terminating services in a unified communication platform is provided. The method includes receiving, from a local market intermediate carrier, a request for a communication between a subscriber of a public network and an end-user endpoint in a local network, associated with an end-user phone number. The method includes creating a lease for an address anchor in a pool of addresses, receiving, in a proxy server from a carrier gateway server, a communication request from the end-user phone number to the address anchor, and establishing a communication channel to the address anchor. The method includes replacing, in the communication channel, a “from” header with a phone number of the subscriber of the public network, and a “to” header with the end-user phone number. A system and a non-transitory, computer-readable medium storing instructions to perform the above method are also provided.