Comtech EF Data CRS-500 - Manual (Page 112)

CRS-500 1:N Redundancy System Revision 2
Configuring Modems for 1:N Redundancy MN-CRS500
6–2
6.2 Modem Firmware Requirements
As noted previously, it is strongly recommended that the CRS-500 and its integrated modems
operate with their latest firmware – check Comtech EF Data’s Web site for available firmware
downloads. For detailed instructions on updating modem firmware, refer to the applicable
modem’s Installation and Operation Manual.
Permitted modem models and their oldest compatible firmware versions are as follows:
Modem Modem Firmware Version
CDM-625 without optional IP Packet Processor or with optional
IP Packet Processor installed but disabled
2.2.0 or later (Base Modem)
CDM-625 with optional IP Packet Processor
1.3.4 or later (Packet Processor)
2.2.0 or later (Base Modem)
CDM-750 with GigE or G.703 E3/T3/STS-1 1.4.3 or later
6.3 Modem Remote M&C Communication
Serial remote (EIA-232/485) M&C communication between the user and modems is possible via
direct user connection from a user PC serial port to the DB-9M “P1 | Remote Control”
connector on the CRS-530 System Controller Module, located on the rear panel of the CRS-500
CSU.
For User-to-Switch or User-to-Modem serial communications addressing schemes, see
Appendix C. ADDRESSING SCHEME INFORMATION
.
Ethernet remote M&C communication between the user and modems is possible via direct user
connection to the “10/100 M&C” RJ-45 port provided on the CRS-530 System Controller
Module, located on the rear panel of the CRS-500 CSU.
The user MUST NOT connect any remote M&C (serial or Ethernet) directly to any
modem connected to the 1:N Redundancy system. All modem M&C connections
(serial or Ethernet) must be made directly to the CRS-500 CSU.