Patent ID: 8218471

Claim:
A system for relaying a voice call between communication terminals, comprising: a first access point and a second access point wirelessly connected to communication terminals positioned within the wireless range of the first access point or the second access point, wherein the communication terminals are located in local area networks and adapted to receive voice input, and a communication management device for managing the communication state of each of the first access point and the second access point, wherein the first access point and the second access point give the communication management device a notice of whether or not a new voice call can be relayed at a predetermined timing based on the communication capacity of its own access point, and when there is a relaying request of a new voice call from a communication terminal or to a communication terminal, if the priority of the new voice call is higher compared to a voice call that is being relayed, and the first access point to which the communication terminal is connected cannot relay the new voice call, the communication management device selects the second access point that is able to relay the new voice call, based on the notice from the first access point and the second access point, and sends the information used for connecting to the second access point to the communication terminal via the first access point, wherein the information used for connecting includes the physical location of the access points that are able to relay the voice call, and wherein the communication management device preferentially selects the second access point from access points nearby the physical location of the first access point.