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Expansion module - ISDN - ISDN BRI S/T - refurbished
The 1-port Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) S/T leased line WAN interface card (WIC) (WIC-1B-S/T-LL) is designed specifically for the Cisco 1603 R and 1604 R routers. It is intended for users who require a dialup ISDN BRI line (from the Cisco 1603 R or 1604 R router's built-in ISDN port) and an ISDN leased line (from this ISDN BRI leased line WIC inserted into the Cisco 1603 R or 1604 R router).
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