8-Port Asynchronous/Synchronous High-Speed WAN Interface Card.

1-Port Serial HWIC Front Panel

1-Port Serial HWIC Front Panel, RF

2-Port Serial WAN Interface Card

2-Port Serial WAN Interface Card, RF

1-Port Serial WAN Network Interface Card

2-Port Serial WAN Network Interface Card

4-Port Serial WAN Network Interface Card

Cisco 1-port Channelized OC12/STM-4 SPA