Cisco Cisco 1900 2900 3900 Series 4-Port Gigabit Ethernet HS-WIC with PoE データシート
Data Sheet
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Figure 1. 3G Wireless WAN HWICs for Cisco Integrated Services Routers
With enhanced data rates and improved latency (below 100 milliseconds), WWAN services are an ideal way to
supplement traditional wire line services. 3G WWAN data services offered today have average data rates well in
excess of ISDN speeds, with theoretical limits in excess of 7 Mbps on the downlink and 5 Mbps on the uplink. You
can use the 3G WWAN as a primary link for sites with lower bandwidth requirements and for mobile applications.
You can also use the 3G WWAN data services as a cost-effective alternative in areas where broadband services are
either not available or very expensive. Cisco is building on these performance milestones and adding support for
wireless to our wide variety of WAN interface alternatives.
Key Business Benefits
Applications
WAN Backup
Resilient WAN access is a crucial requirement for branch offices connecting to a corporate site or the Internet.
Although DSL, Frame Relay, ISDN, and dialup are common choices for backup if a primary WAN link fails, a non-
terrestrial data path such as a 3G WWAN provides enhanced WAN diversity (Figure 2). Cisco 3G WWAN HWICs
combined with the Cisco integrated services routers offer the capability to automatically initiate connection over the
3G WWAN when the primary WAN link is unavailable. In addition, you can use Cisco 3G WWAN HWICs to provide
supplemental bandwidth when the primary WAN link is overloaded.