Harris Intraplex STL-160 Series, Installation & Operation Manual

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2 – Functional Description ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 2-11
Intraplex Products
Table 2-2 lists the common modules which the CM-5RB can replace.
Table 2-2. Interoperability Chart
Application CM-5RB Replaceable?
CM-5, TERM Yes
CM-5, DI Yes, replace both DI-A and DI-B
CM-5, TERM, Module Redundant Yes, replace both primary and backup
CM-5, DI, Module Redundant Yes, replace all 4 CMs
CM-5R Yes, replace both
In order to use combined module and line redundancy, these components must be installed in a
chassis in adjacent module slots:
● Two common modules (a pair of CM-5RB modules)
● One MA-235-1 module adapter with RJ-48C connector
● One MA-235-2 module adapter with RJ-48C connector
● One CA-202 shielded cable that connects the two module adapters
Note: The MA-235-1 and MA-235-2 module adapters are the only adapters qualified to use with both
line and module redundancy. MA-215 or MA-217A/B adapters can be used with the CM-5RB
module for module-only redundancy. You should install the MA-235-1 and MA-235-2 adapters,
as they have the capability to upgrade to line redundancy at a later date.
Figure 2-8 shows a component-level diagram of the system.
Figure 2-8. Combined Module and Line Redundancy Block Diagram
The MA-235-1 module adapter provides the T1 interface for the primary line and the port is labeled
“T1/E1 Primary.” The MA-235-2 module adapter provides the T1 connection for the backup line
through the port labeled “T1/E1 Backup.” Both module adapters work as a pair but are implemented
as two separate adapters. This arrangement is designed to allow replacement of a failed MA without
interruption to the active service.