CRS-300 1:10 Redundancy Switch MN/CRS300.IOM
Modem, RMI/TMI, and Switch Configuration Revision 19
5–4
Configure the DB-25 “Data” connector on the modem rear panel for “Redundancy Mode”. On each
modem, set “1:N” redundancy to the Active state:
Select: Utility
1:N
Enable,Disable
set to Enable
Power down all CDM-625/As.
Power up all CDM-625/As. Verify that front panel LEDs indicate that each Traffic Modem is ONLINE.
5.2.4.1.1 Configure CDM-625/A 1:N Redundancy for Carrier-in-Carrier®
If you use Carrier-in-Carrier® (CnC) with any CDM-625/A traffic modem, special configuration
steps must be taken to make sure proper operation of the modem(s) within a configured 1:N
Redundancy System.
Before you make any configurations changes, see Figure 4-8 and the instructions found in
Section 4.4.2 in Chapter 4. CABLES AND CONNECTIONS to connect and secure the CA-0000275
PMSI Multi-drop CnC Plus Cable (<11X> DB-9M, 8.25’) between the Redundant Modem and all
other Traffic Modem(s) using CnC
.
The CA-0000275 cable bypasses the CRS-300 1:10 Redundancy Switch.
Once you interconnect all CnC-enabled modems with the PMSI Multi-drop Cable, you must then
configure each CnC-enabled
modem. Use the CDM-625/A Front Panel menu to do these steps
(make sure to press ENTER to save your changes):
• First, from the top-level Select: menu – use the ◄► arrow and ENTER keys to navigate
each nested menu level until the PMSI control mode display screen appears:
Select: Configuration CnC PMSI-control
Select: Configuration Test Monitor
Info Store/Ld Utility ODU FAST ()
CONFIG: All Mode Tx Rx Clocks D&I
CnC EDMAC Misc Mask Remote IP ()
Carrier-in-Carrier: Mode Freq-Offset
Search-Delay PMSI-control ()
CnC PMSI mode: Redundancy
(Idle, Redundancy, Talk, Listen) ()
• Then, from the PMSI mode display screen – use the
▲ ▼ arrow keys to select Redundancy,
and then press ENTER.
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