Phone URL exchange for improved call quality

A system for exchanging information for improved call quality includes an exchange engine for switching between networks or communication channels and a monitoring module for determining quality of communication over a network or communication channels and initiating switching in response to poor call quality. The monitoring module may be responsive to input from the user or to call quality as determined for example by statistical measurement. The exchange engine identifies the network or communication channel in use for the current call; determines the call quality for a second network or communication channel not being used for the current call; determines whether call quality of the second network is better than the first network; and switches the current call between a first user and the second user from the first network to the second network if the call quality of the second network is better than the first network.