Cisco showed off its third-generation CDMA and GSM HWIC based Wireless WAN interface cards at the CTIA. These cards plug into the Cisco 1841, 2800, and 3800 ISR integrated services routers for backup connectivity or for primary connectivity in mobile or remote locations that lack wired Internet access. Using Cisco's latest IOS software, it is possible to seamlessly route between wired and wireless Internet connectivity based on higher layer metrics, such as the ability to ping the other end rather than looking for a hard failure on the primary connection.
A cheaper consumer version is also available for the small office or home market from Cisco Linksys. The WRT54G3G-ST is designed for wired or wireless Internet uplink, but unlike the HWIC-based solution, which can take advantage of advanced IOS features, the WRT54G3G requires the push of a button to fail on or off. Applications include tour buses or trailer homes and RVs or small office backup connectivity. In this instance, the consumer plugs in his/her own 3G PCMCIA card; the same kind used for notebooks.