Comtech EF Data CRS-500, Инструкция по установке и эксплуатации

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CRS-500 1:N Redundancy System
Revision 4
Appendix C C–5 MN-CRS-500
C.2.2 Set Up Modems
Refer to the appropriate modem’s Installation and Operation Manual for additional
information.
•
Local Modem m , where m is modem position number (1 through 10) on Switch:
o
MCA = (Switch RCA) + (100 x m )
o
Set EDMAC Framing ON.
o
Set as EDMAC master.
o
Set with EDMAC Slave Address Range, ESA = (Modem RCA) + 10
•
Distant Modem 1 (attached to the Distant end of link to Modem m ):
o
Remote control address: no setting required (Remote control not used).
o
Set EDMAC Framing ON.
o
Set as an EDMAC slave.
o
Set Slave Address, ESA = (Master ESA) + 1
o
MCA = ESA
•
Two Distant Modems in a 1:1 configuration:
Set up the on-line modem as for Distant Modem 1, described previously in this section. The offline
modem is automatically configured to match the on-line modem. M&C can only be achieved to the
online modem.
It is not possible for the offline modem of a 1:1 pair to respond to EDMAC
messages directly as it is not transmitting. Using the internal 1:1 link, the online
modem polls and retains the off-line modem status. Depending on the modem, this
information can be obtained as follows:
Use OUS (Offline Unit Status) – OUS? for queries. This command/query is available
in the following modems/firmware versions:
Modem Firmware Version
CDM-625/A 1.1.1 or later
CDM-750 1.4.3 or later
CDM-760 1.1.1 or later