Rmi/Tmi Limitations And Considerations; Interface Combinations; Table 4-2. Cdm-700 Interface Card Combinations - Comtech EF Data CRS-300 Installation And Operation Manual

CRS-300 1:10 Redundancy Switch
Cables and Connections
4.7 CDM-700 Modem Connections
If adding a modem to an operating 1:N system, care needs to be taken to not interfere with the
existing traffic. The cabling, power-up sequence and communication connections must be correct
to avoid contention in the system from the modem Tx carrier. This information is detailed in
Chapter 7.4.5 - (CONFIG) ACTIVE MODEMS
4.7.1

RMI/TMI Limitations and Considerations

1. Traffic modems with differing data types can all be supported by the
2. Depending on the traffic data type, the appropriate jumper settings are
IMPORTANT
4.7.2

Interface Combinations

With (2) interface card slots available in the CDM-700 modem, there are many possible interface card
combinations. The CRS-300 can cover many of these combinations, but not all. Table 4-2 provides
details for the CDM-700 interface card combinations that are compatible with the CRS-300.
CDM-700 Modem Configuration
Interface Slot 1
G.703 (CDI-10)
OC3 Copper
(CDI-50)
HSSI (CDI-60)
GbE (CDI-70)
None
Notes:
1. The Redundant CDM-700 must have the same interface cards in each slot as any of the
Traffic CDM-700s.
Redundant Modem.
provided on the TMI to ensure proper operation for HSSI with CA/TA signals
using the CRS-336 TMI. Refer to Chapter 4. MODEM, TMI, AND SWITCH
CONFIGURATION for this important configuration information.

Table 4-2. CDM-700 Interface Card Combinations

Interface Slot 2
None CRS-345
G.703 (CDI-10) CRS-345
HSSI (CDI-60) Not Supported
GbE (CDI-70) CRS-345
None
CRS-325
GbE (CDI-70)
None CRS-336
HSSI (CDI-60) None
GbE (CDI-70) CRS-336
None
CRS-336
GbE (CDI-70)
G.703 (CDI-10) CRS-345
HSSI (CDI-60)
CRS-336
GbE (CDI-70)
.
1:N CRS-300 Configuration
TMI Card RMI Card
CRS-306
CRS-306
Not Supported
CRS-306
CRS-306
CRS-306
None
CRS-306
CRS-306
CRS-306
4–50
Revision 16
MN/CRS300.IOM
Notes
-
-
Exceeds backplane capability
Use wired-around GigE
(see Chapter 3)
-
Valid for Redundant modem
-
Exceeds backplane capability
Use wired-around GigE
(see Chapter 3)
-
Use wired-around GigE
(see Chapter 3)
-
-
-