Comtech EF Data CRS-311 - Manual (Page 146)

CRS-311 1:1 Redundancy Switch Revision 7
Appendix A MN/CRS311.IOM
A-2
A.2.1 EIA-530 to EIA-422 DCE Cable
Use the EIA‐530 to EIA‐422/449 DCE Cable (Figure A‐1) for connections between the CRS‐311 and the User Data.
Figure A-1. DCE Conversion Cable: EIA-530 to EIA-422/449