US carriers were quick to acknowledge their allegiance to Voice over LTE (VoLTE), a 4G VoIP-related technology first demonstrated in February. Ever since that time, however, talk of deployment plans have been replaced by crickets. MetroPCS was the first to break the silence, as CEO Roger Linquist announced at this morning's quarterly earnings call that his company's "planning to begin introducing VoLTE-capable handsets early next year to move voice as
