Cisco Cisco 1900 2900 3900 Series 4-Port Gigabit Ethernet HS-WIC with PoE Data Sheet

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Data Sheet

One- and 2-Port Serial and Asynchronous High-
Speed WAN Interface Cards for Cisco 1800, 1900,
2800, 2900, 3800, and 3900 Series Integrated
Services Routers

Serial and asynchronous high-speed WAN interface cards (HWICs) provide highly flexible connections for Cisco

1800, 1900, 2800, 2900, 3800, and 3900 Series Integrated Services Routers. These HWICs help customers

enable applications such as WAN access, legacy protocol transport, console server, and dial access server. You

can mix and match HWICs to tailor cost-effective solutions for common networking problems such as remote

network management, external dial-modem access, low-density WAN aggregation, legacy protocol transport, and

high-port-density support.

Cisco offers four new serial and asynchronous HWICs:

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Cisco 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card (HWIC-1DSU-T1)

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Cisco 1-Port Serial WAN Interface Card (HWIC-1T)

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Cisco 2-Port Serial WAN Interface Card (HWIC-2T)

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Cisco 2-Port Asynchronous/Synchronous Serial WAN Interface Card (HWIC-2A/S)

Figure 1. Cisco 1- and 2-Port Serial and Asynchronous HWICs

Common Applications

These highly flexible interface cards facilitate several important applications:

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WAN access and aggregation

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Legacy protocol transport

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Dial access server

WAN Access and Aggregation

Serial interfaces can be used to provide WAN access for remote sites. With support for serial speeds up to 8

Mbps per port, the 2-port serial HWIC is ideal for low- and medium-density WAN aggregation (Figure 2).