Product specifications

CDM-710 Broadcast Satellite Modem Revision 11
Introduction MN/CDM710.IOM
1–9
1.3.5 Allowable Data Interface Combinations
Data interfaces are installed or removed from the rear of the CDM-710 chassis into Slot 1 and
Slot 2 of the CDM-710. The allowable combination of data interfaces and the data interfaces that
are supported for redundancy are found in the table that follows. In all cases, only one data
interface is active at a time.
Additional information relating to the data interfaces supported in 1:1 and 1:N support is also
provided.
1:1 Redundancy with the CRS-170A (70/140 MHz) and CRS-180 (L-Band): The “Allowable
CDM-710 Modem Configuration” column in the table that follows shows the data interface
combinations of the modem that are supported by the CRS-170A and CRS-180 1:1 Redundancy
Switches. First, the 1:1 switch is selected depending upon the operating frequency, and then a
data interface kit for Slot 1 and Slot 2 is chosen. More information on these kits is provided in the
CRS-170A or CRS-180 1:1 Redundancy Switch datasheet and Installation and Operation manual.
1:N Redundancy with the CRS-300: The CRS-300 was originally designed for operation with the
CDM-600 and subsequently adapted to a number of other modems. It is capable of supporting
interfaces up to the point where there are no more paths left to route traffic. This is the reason why
the CRS-300 supports a limited set of the interface combinations supported by the CDM-710.
CDM-710 Modem Configuration 1:N CRS-300 Configuration
Notes
Interface Slot 1 Interface Slot 2 TMI Card RMI Card
ASI (CDI-40) None
CRS-325 CRS-306
-
ASI (CDI-40)
GbE (CDI-70)
Can be used as
Redundant Modem
HSSI (CDI-60)
None
CRS-336
CRS-306
-
None
GbE (CDI-70) -
HSSI (CDI-60)
GbE (CDI-70)
Can be used as
Redundant Modem
Notes:
1. The Redundant Modem must have the same interface cards in each slot as any of the
Traffic Modems.
2. The Traffic Modem must have the same interface cards in each slot as any of the other
Traffic Modems have, or a blank panel installed.
3. Interface Slots 1 and 2 are not active simultaneously
.