... Part Code: HWIC-1T Data Link Protocol: RS-232, RS-530, X.21, V.35, RS-449, RS-530A Serial and asynchronous High-Speed WAN ... common networking problems such as remote network management, external dial-modem access, low-density WAN aggregation, legacy protocol transport, and high ... 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 ...