Modem-To-User Data Interface Connections And Examples - Comtech EF Data CRS-170A Installation And Operation Manual

CRS-170A L-Band 1:1 Redundancy Switch MN/CRS170A.IOM
Cables and Connections Revision 14
5.7.2

Modem-to-User Data Interface Connections and Examples

In addition to the control and IF Modem-to-Switch cabling shown previously, a number of data interface
configuration kits are available for use with the CDM-760 or CDM-750 High-Speed Trunking Modems.
5.7.2.1 Gigabit Ethernet Data Interface Example
The CDM-760 or CDM-750 provides a 'J7 | OPTICAL' port and two Plug-In Interface Card (PIIC) slots for
optional data traffic handling. Both modems otherwise feature two 10/100/1000 Gigabit Ethernet RJ-45
data interface ports by default. Figure 5-34 shows a block diagram and cabling example for a CDM-760
or CDM-750 1:1 modem configuration using these RJ-45 ports (this example shows use of both ports).
This configuration requires no cabling and component kit – you must use user-provided Ethernet cables
and Layer 2 switches for direct connection to the modems.
CDM-760 or CDM-750 Block Diagram – Gigabit Ethernet 1:1 Operation
Figure 5-34. CDM-760 or CDM-750 RJ-45 Gigabit Ethernet 1:1 Example
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