Mocomtech CRS-300 - Manual (Page 110)

CRS-300 1:10 Redundancy Switch Revision 16
Cables and Connections MN/CRS300.IOM
4–50
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
IM PORTAN T
1. Traffic modems with differing data types can all be supported by the
Redundant Modem.
2. Depending on the traffic data type, the appropriate jumper settings are
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.
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.
Table 4-2. CDM-700 Interface Card Combinations
CDM-700 Modem Configuration 1:N CRS-300 Configuration
Notes
Interface Slot 1 Interface Slot 2 TMI Card RMI Card
G.703 (CDI-10)
None CRS-345 CRS-306 -
G.703 (CDI-10) CRS-345 CRS-306 -
HSSI (CDI-60) Not Supported Not Supported Exceeds backplane capability
GbE (CDI-70) CRS-345 CRS-306
Use wired-around GigE
(see Chapter 3)
OC3 Copper
(CDI-50)
None
CRS-325 CRS-306
-
GbE (CDI-70) Valid for Redundant modem
HSSI (CDI-60)
None CRS-336 CRS-306 -
HSSI (CDI-60) None None Exceeds backplane capability
GbE (CDI-70) CRS-336 CRS-306
Use wired-around GigE
(see Chapter 3)
GbE (CDI-70)
None
CRS-336 CRS-306
-
GbE (CDI-70)
Use wired-around GigE
(see Chapter 3)
None
G.703 (CDI-10) CRS-345
CRS-306
-
HSSI (CDI-60)
CRS-336
-
GbE (CDI-70) -
Notes:
1. The Redundant CDM-700 must have the same interface cards in each slot as any of the
Traffic CDM-700s.