Cisco integrated services routers offer a wide variety of WAN connectivity modules to accommodate the range of application needs in customer networks. The Cisco ADSL2 and ADSL2+ high-speed WAN interface cards (HWICs) deliver business-class asymmetric DSL (ADSL) services for customers ranging from small-to-medium sized businesses to enterprise branch offices. The 2-port HWIC card has an ISDN BRI backup port in addition to the ADSL port.