Comtech EF Data CRS-300 - Manual (Page 269)

CRS-300 1:10 Redundancy Switch MN/CRS300.IOM
Appendix B Revision 19
B-23
B.4.6 Switch-to-Modem, Balanced G.703 Data Cable for CDM-625/A (DB-15FDB-15M)
You may use this cable for Balanced G.703 data connection between the Switch and the CDM-625/A Modem.
Figure B-18. CDM-625/A Bal G.703 Data Cable (CA-0000072)