?????????????????????????????????????????????????????????????????????? ?????????????????? ???????????????????????????????????????????????????????????????????????????????? ?????????????????????? Integrating multiple carriers into existing systems may be difficult. Businesses must make certain

???? ???????????????????????????????????? The voice part can either be sent as Voice over Net Protocol (VoIP) or with a separate fallback copyright focused on voice-only, i.e. CDMA2000 1 x provider. EVDO does not provide integrated voice and only focuses on supplying high-speed data. Most CDM