Modem-To-User Data Interface Kits And Connection Examples - Comtech EF Data CRS-180 Installation And Operation Manual

CRS-180 70/140 MHz IF 1:1 Redundancy Switch
Cables and Connections
4.5.2

Modem-to-User Data Interface Kits and Connection Examples

In addition to the control and IF switch‐to‐modem cabling shown in the previous section, a
number of data interface configurations are available for use with the CDM‐700. The kits featured
in this section can be supplied with the CRS‐180 for use with the CDM‐700.
Figure 4-28. CDM-700 Block Diagram: User
Figure 4‐28 shows a block diagram typical for the kits shown in Sects. 4.5.2.1 through 4.5.2.3.
Separate interface cabling kits are needed for these CDM‐700 data interfaces. For example,
Sect. 4.5.2.1 identifies the interface kits used for the CDI‐10 Dual G.703 E3/T3/STS‐1 and the
CDI‐60 HSSI Data Interfaces. With the exception of the CDI‐70 Gigabit Ethernet Data Interface
configuration shown in Sect. 4.5.2.4, where user‐provided Ethernet cables and Layer 2 Switch
are used, one interface kit per 1:1 modem pair is required for each user interface (see examples
for specified quantities).
The data interface combinations allowable in Interface Slots 1 and 2 of the CDM‐700 chassis are as
follows:
Interface Slot 1
Dual G.703 (CDI-10)
OC3 Optical (CDI-50-1) Single Mode
OC3 Copper (CDI-50-1)
HSSI (CDI-60)
GigE (CDI-70)
None
Allowable CDM-700 Combinations
Interface Slot 2
None
Dual G.703 (CDI-10)
HSSI (CDI-60)
GigE (CDI-70)
None
None
None
HSSI (CDI-60
GigE (CDI-70)
None
GigE (CDI-70)
Dual G.703 (CDI-10)
HSSI (CDI-60)
GigE (CDI-70)
Modem
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Revision 8
MN/CRS180.IOM
Switch Traffic