ZOOM 3G+ HSPA Modem/Router with Wireless-N and Phone Port (4530) Provides both voice and data to a home or business using cellular service Built-in 3G+ unlocked modem supports speeds up to 7.2 Mbps using UMTS frequencies of 850, 1900, and 2100 MHz or GSM/GPRS/EDGE frequencies of 850, 900, 1800,1900 Built-in router networks up to 253 wireless Wi-Fi and Ethernet devices. Plug in your favorite land-line phone or cordless phone base station, then make and receive voice calls over your mobile voice network with support for Caller ID, Call Waiting, Call Forwarding, Speed Dialing, Call Tracking, and more Supports text messaging, which is especially useful if you swap a SIM between your mobile phone and the 4530 gateway Wireless-N range is typically up to 1,000 feet (304 meters) outdoors, indoor range varies depending on walls and other obstructions Built-in modem supports wireless back-up of ADSL and cable modems Warranty and USA support from Zoom, a leader in communication products since 1977