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CRS-300 1:10 Redundancy Switch
Cables and Connections
4.5.4
Data Connections – CRS-300 to User
The User's traffic data from an external router, multiplexing equipment or test data generator
should connect to the connectors on the TMI labeled "User Data Interface". This interface
replaces the direct connection to the Traffic CDM-625's "Data Interface" connectors.
For Quad E1 operation, the optional CA-0000163 and CA-0000164 Adapter Cables, illustrated in
Figure A-30 and Figure A-31 , respectively, in Appendix A. CABLE DRAWINGS , may be
purchased from Comtech EF Data to adapt the Balanced G.703 or Auxiliary G.703 9-pin Type
'D' female connectors to either a standard 15-pin Type 'D' or a RJ-48 female connection pair.
4. Because the Redundant Modem's function is to replace a faulted Traffic
IMPORTANT
5. Ensure that the correct operation for Balanced or Unbalanced G.703 data
4.5.5
Data Connections – CRS-350 Engineering Service Channel (ESC) Switch
4.5.5.1 ESC Data Connections – CRS-350 to Modems
Refer to Figure 4-14 to connect and secure the Multi-purpose Cable CA-0000074 (2 places)
between the rear panels of the CRS-350 and the CDM-625s as follows:
•
DB-25F Jxx "Overhead," D-9M Paxx "Audio," and DB-15M Pbxx "IDR Alarms"
connectors on the CRS-350 rear panel (where xx specifies the number 1 through 10
Traffic Modem, and 11 is reserved for the Redundant Modem), to
•
HD-44F "IDR Data/Alarms/Audio" and DB-9M "ESC" connectors on the Redundant
and Traffic CDM-625s.
4.5.5.2 ESC Data Connections – CRS-350 to User
The User's equipment should be connected to the correct corresponding plug-in UDI (User Data
Interface) card on the front panel of the CRS-350. This replaces the direct connection to the
Traffic CDM-625's "IDR", "Audio" and "Overhead" ports.
4.5.6
Operation of the CDM-625 in CDM-600/600L Emulation Mode
With the exception of EIA-232 type traffic data handling, the CDM-600 Emulation Mode enables
the CDM-625 to serve as an operationally transparent replacement unit for the CDM-600/600L
Open Network Satellite Modems.
4.5.6.1 Preparing the CDM-625 for Operation in CDM-600/600L Emulation Mode
The CDM-625 may be set for operation in CDM-600/600L Emulation mode by selecting this
mode of operation from the CDM-625 front panel. From the top display menu:
Use the ▼▲ buttons on the keypad to select the appropriate emulation mode.
Modem, the RMI does not have a User Data Interface.
is configured on the modem.
SELECT: UTILITY
Em
Emulation Mode
4–35
Revision 16
MN/CRS300.IOM
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