Cisco High-Speed

Cisco High-Speed - Expansion module - RS-232 x 8 - refurbished - for Cisco 18XX, 1921 4-pair, 1921 ADSL2+, 19XX, 28XX, 28XX V3PN, 29XX, 38XX, 38XX V3PN, 39XX Serial and asynchronous High-Speed WAN Interface Cards (HWICs) provide highly flexible connections for Cisco 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.