Charles A. Drexler

Syniverse Technologies LLC provides mobile communications services to mobile operators, cable and internet providers and enterprises. It offers connected LTE, intelligent roaming, mobile protection, mobile engagement, mobile reach and revenue management. The company was founded in 1987 and is headquartered in Tampa, FL.

Lucent Technologies used to design, develop and manufacture telecommunications systems, software and products. The company was headquartered in Welwyn Garden City, UK.

AT & T is the global leader in providing local, long distance, Internet, and transaction-based voice and data services. AT&T provides unparalleled quality and reliability in communications services

MetroPCS, Inc. is a provider of wireless communications services. It provides flat rate services, which includes unlimited local and domestic long distance calls, digital photos transfer and text message services. It is located in Dallas, TX

Iris Wireless LLC engages in the provision of global messaging solutions for wireless, fixed-line and voice over Internet Protocol (VoIP) carriers, operating messaging networks that manage the inter-carrier exchange of wireless data traffic between mobile network operators (MNO). It offers core mobile messaging services, prepaid solutions, social networking services, and mobile commerce solutions. The company was founded by Peter A. Rinfret and Sunir Kochhar in 2000 and is headquartered in Greenwich, CT.