A system and method for establishing and maintaining a voice over internet protocol connection between wireless devices, in one example embodiment, may comprise a receiving module to receive a communication device identifier, and a request to establish a communication data link to another communication device. The communication device identifier may initially be received by a terminal from the communication device over a wireless data link connecting the communication device and the terminal. Subsequently, the terminal network address may be associated with the terminal, which received the communication device identifier. A processing module may be utilized to determine whether another communication device is reachable over a wireless data link to another terminal based on information stored in a register. Further, a communication module may be utilized to establish the communication data link between one communication device and another communication device subsequent to determining that another communication device is reachable by a terminal over the wireless data link.