Comtech EF Data CRS-500 - Manual (Page 87)

CRS-500 1:N Redundancy System Revision 2
Cables and Connections MN-CRS500
4–31
4.3.2.4.3 CDM-750 IF Cable Connections
Refer to Sect. 4.7 CRS-282xx IF Cable Connections for information and examples for the
establishment of IF cabling for single and multiple transponder configurations, with or without
the use of the CRS-500’s CRS-282xx Tx/Rx IF Switch Units (ISUs).
4.3.2.4.3.1 CRS-500 DSU
 User Traffic Data Connections
The user’s traffic data from an external router, multiplexing equipment or test data generator
should connect to the TMI connectors labeled “User Data Interface.” This interface replaces the
direct connection to the Traffic CDM-750’s “J5 | DATA” or “J6 | DATA” ports.
Because the Redundant Modem’s function is to replace a faulted Traffic Modem,
the RMI does not have a User Data Interface.
4.3.2.4.3.2 Carrier-in-Carrier
®
(CnC) Operation
No external cabling is required for the CDM-750’s optional DoubleTalk TM Carrier-in-
Carrier ® (CnC) operation.