Called parties in an enhanced communication system are provided location information associated with a calling party to help them determine whether they should accept the call. The various structures can simultaneously guide photons and phonons in a suspended membrane. The activity of the DAM may be modified or enhanced during the process by the addition of promoter metals, or prior to being returned to the reactor, by slurry low temperature oxidation followed by reduction at elevated temperature, and may further be enhanced by being passivated prior to being returned to the reactor.