Cisco PA-4T

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Cisco PA-4T, 73-1389-05 7200 7500 4 port Serial (not the Plus)

THE PA-4T+ PROVIDES THE FOLLOWING ELECTRICAL INTERFACES: EIA/TIA-232, EIA/TIA-449, EIA-530. X.21 AND V.35. EACH INTERFACE COMPLIES WITH ITS SPECIFIC INTERFACE SPECIFICATIONS. THE CABLE ATTACHED TO EACH PA-4T+ PORT ADAPTERS INTERFACE PORTS DETERMINES ITS TYPE (EIA/TIA-232 AND SO FORTH) AND ITS MODE (DATA COMMUNICATIONS EQUIPMENT [DCE] OR DATA TERMINAL EQUIPMENT [DTE]). EACH INTERFACE ALLOWS A MAXIMUM BANDWIDTH OF 2.048 MBPS THE SPEED DEPENDS ON THE TYPE OF ELECTRICAL INTERFACE USED. USE EIA/TIA-232 FOR SPEEDS OF 64 KILOBITS PER SECOND (KBPS) AND BELOW, AND USE X.21, EIA/TIA-449, V.35, OR EIA-530 FOR HIGHER SPEEDS. SERIAL SIGNALS CAN TRAVEL A LIMITED DISTANCE AT ANY GIVEN BIT RATE GENERALLY, THE SLOWER THE BAUD RATE, THE GREATER THE DISTANCE. THE PA-4T+ CONTAINS THE ENABLED LED, STANDARD ON ALL PORT ADAPTERS, AND ONE STATUS LED FOR EACH PORT. AFTER SYSTEM INITIALIZATION, THE ENABLED LED GOES ON TO INDICATE THAT THE PA-4T+ HAS BEEN ENABLED FOR OPERATION.