Comtech EF Data CRS-300 - Manual (Page 273)

CRS-300 1:10 Redundancy Switch MN/CRS300.IOM
Appendix B Revision 19
B-27
B.4.10 Modem-to-User, Quad E1 Data Cable for CDM-625/A (DB-9MDB-9F)
You may use this Type ‘D’ 9-pin cable for the Quad E1 data connections between the Switch CRS-365D TMI and the CDM-625/A Modem.
Figure B-22. CDM-625/A Quad E1 Data Cable (CA-0000136)