Comtech EF Data CRS-500 - Manual (Page 68)

CRS-500 1:N Redundancy System Revision 2
Cables and Connections MN-CRS500
4–12
4.3.1.3 CRS-500

CDM-625 10/100 Ethernet System Communication
Cable Connections
• The Redundant Modem 10/100 Ethernet port labeled “1” is always connected
to the installed CRS-510 RMI 10/100 Ethernet port labeled “Port 1.”
• The CRS-520 TMI 10/100 Ethernet port labeled “Port 1” is always connected
to its respective Traffic Modem 10/100 Ethernet port labeled “1”.
• Modem 10/100 Ethernet ports “2” through “4” are reserved for use as 10/100
Ethernet traffic data connections.
For 1:N connections between the CRS-500 CSU and CDM-625 Modems: 10/100 Ethernet is used
by the CRS-500 to communicate to all modems. It is also used for “pass-through”
communications from the user and to/from the modems (including 10/100 Ethernet and Serial
M&C).
The user may never directly connect to any modem for 10/100 Ethernet or Serial M&C. To
access any modem in the redundancy system, the user must connect to the CRS-500 CSU via the
CRS-530 System Controller Ethernet (“10/100 M&C” port) or Serial (“P1 | Remote Control” port)
interface.
Referring to Figure 4-4:
• First, for the Redundant Modem, connect a PP/CAT5FF7FTGY cable between the
Redundant Modem and the CRS-510 RMI:
o
RJ-45 10/100 Ethernet port labeled “1” on the modem, to
o
RJ-45 10/100 Ethernet port labeled “Port 1” on the CRS-510 RMI.
• Then, for each Traffic Modem, 10/100 Ethernet System Communication is achieved via
the TMI/Traffic Modem route. Connect a PP/CAT5FF7FTGY cable between each Traffic
Modem and its corresponding CRS-520 TMI as follows:
o
RJ-45 10/100 Ethernet port labeled “Port 1” on the CRS-520 TMI, to
o
RJ-45 10/100 Ethernet port labeled “1” on the modem.