MTC-C2-B06-N3-US: 1xRTT Modem (RS-232) w/US Accessory Kit (Verizon) The MultiConnect Cell cellular modem is a part of Multi-Tech's comprehensive line of modems for M2M (machine-to-machine) communications. MultiConnect Cell modem is fully certified and carrier approved, so you can get to market extremely fast, allowing customers to start obtaining the benefits of M2M. Designed specifically for M2M applications, it provides a long, stable lifecycle and is durable, reliable and easy to deploy