A universal linking gateway interfaces between a local network of one or more local phones, such as analog phones or PBX phones, a plurality of cell phones and multiple service lines, including a public switched telephone network. Implementation of industry standard protocols such as hook flash signals enable a simplistic local phone to access enhanced calling features including answering calls on multiple service lines, to select and make calls on any desired service line as well as handle simultaneous calls on either an active service line or multiple service lines. Further, the gateway manages security and data transfer features between the gateway and the telephonic devices connected thereto. The gateway interfaces between a variety of other telephonic devices including PSTN, VoIP, and telephonic intercoms. Wireless communications are controlled by the gateway for proper pairing management.