Comtech EF Data CRS-500 - Manual (Page 188)

CRS-500 1:N Redundancy System Revision 2
Appendix A MN-CRS500
A-6
A.3.3 RMI Control Cable for CDM-625 Only
Use this cable as a control connection between a Redundant Modem and a CRS-500 DSU (RMI).
Figure A-4. RMI Control Cable (CEFD P/N CA/WR0066)