... priceDetailed Product DescriptionManufacturer: Cisco Part Code: HWIC-1T Data Link Protocol: RS-232, RS-530, X.21 ... problems such as remote network management, external dial-modem access, low-density WAN aggregation, legacy protocol transport ... Plug-in module Interface (Bus) Type HWIC Data Link Protocol RS-232, RS-530, X.21 ... , V.35, RS-449, RS-530A Data Transfer Rate 8 Mbpsyou can buy by wholesale or ...