Cisco MWR-1941-DC-2T1 Hardware Installation Guide - Page 88
EIA-530 Interface
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Serial Connection Signals and Pinouts Appendix B Cable Specifications EIA-530 Interface This section contains the following topics: • EIA-530 Connections • EIA-530 Serial Cable Assembly EIA-530 Connections EIA-530, which supports balanced transmission, provides the increased functionality, speed, and distance of EIA/TIA-449 on the smaller DB-25 connector used for EIA/TIA-232, instead of the 37-pin connectors used for EIA/TIA-449. Like EIA/TIA-449, EIA-530 refers to the electrical specifications of EIA/TIA-422 and EIA/TIA-423. Although the specification recommends a maximum speed of 2 Mbps, EIA-530 is used successfully at 4 Mbps or faster speeds over short distances. The EIA-530 adapter cable is available in DTE mode only. The network end of the EIA-530 adapter cable is a standard DB-25 plug commonly used for EIA/TIA-232 connections. Figure B-15 shows the DB-25 connector at the network end of the adapter cable. Figure B-15 EIA-530 Adapter Cable Connector, Network End DTE H1615a EIA-530 Serial Cable Assembly Figure B-16 shows the EIA-530 serial cable assembly, and Table B-16 lists the pinout. Arrows indicate signal direction: -> means DTE to DCE and