The Cisco 3G WWAN HWICs are the first enterprise-class 3G WWAN solution. Suitable for both backup and primary applications, these cards support the latest 3G standards (High-Speed Packet Access [HSPA] and EVDO Rev A) and are backward-compatible with Universal Mobile Telecommunications Service (UMTS), Enhanced Data Rates for Global Evolution (EDGE), General Packet Radio Service (GPRS), and EVDO Rev0/1xRTT. The Cisco 3G WWAN HWICs Series has two variants: - Global System for Mobile Communications (GSM) and UMTS models are based on 3GPP, and they support HSPA (HSUPA and HSDPA), UMTS, EDGE, and GPRS - Code Division Multiple Access (CDMA) models are based on 3GPP2, and they support EVDO RevA/Rev0 and 1xRTT