Comtech EF Data CRS-300 - Manual (Page 149)

CRS-300 1:10 Redundancy Switch MN/CRS300.IOM
Cables and Connections Revision 19
4–75
Notes:
1) The Redundant CDM-700 must have either the same cards in each slot as any of the Traffic
CDM-700s.
2) The Traffic CDM-700 must have either the same cards in each slot as any of the other Traffic
CDM-700s have, or a blank panel installed.
3) An OC-3 Optical TMI is not currently available.
4) As of April 2007:
• The CRS-336 TMI card replaces the CRS-335.
• The CRS-306 RMI card replaces the CRS-305.
4.10.3 Control Cable Connections – CRS-300 to Modems
The Control Cable CA/WR12361-1 provides the serial communication path between the Switch
and the modems and controls the modem’s external Tx IF-mute control line. You must always
use this cable.
See Figure 4-30 and Figure 4-31 and do these steps to connect and secure the CA/WR12361-1
cables between the Switch and each CDM-700:
• HD-15F connector labeled “J1” on the Switch RMI or TMI(s), to
• DB-15M connector labeled “P1 Alarms” on the CDM-700.
4.10.4 Serial Traffic Data Connections – CRS-300 to Modems
If G.703 is the traffic data type, see Figure 4-30, Figure 4-31, Figure 4-33, or Figure 4-35 and do
these steps to connect and secure the Traffic Data Cables CA/RF12278-1 and CA/RF12279-1
between the Switch and each CDM-700:
First, do these steps to connect and secure the CA/RF12279-1 cable between the Switch and the
Redundant CDM-700:
• DB-15M connector labeled “P1” on the Switch RMI, to
• BNC connectors (four connectors per installed CDI-10 card) on the Redundant CDM-700
(depending on the modem configuration, either <4X> or <8X> BNC connectors are used).
Next, do these steps to connect and secure the CA/RF12278-1 cables between the Switch and
the Traffic CDM-700(s):
• DB-9M connector labeled “P1” on the Switch TMI(s), to