Harris Intraplex STL-160 Series - Channel Service Unit Connection; Figure 3-11. Connectors and Pin Locations on MA-215 and MA-217 B; Figure 3-12. MA-215, MA-235-1, or MA-235-2 T1 Port and RJ-48 C Connector Pin Orientation; Use with Integrated CSU

ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation 3 – Installation & Wiring
Version 2.11, August 2011
3-12 Harris Corporation
Intraplex Products
Figure 3-11. Connectors and Pin Locations on MA-215 and MA-217B
If the multiplexer is equipped for module and line redundancy, two CM-5RB common modules are
installed in adjacent slots, with both MA-235-1 and MA-235-2 adapters behind each. A CA-202
shielded cable connects the two module adapters internally.
Note: Only the MA-235-1 and MA-235-2 module adapters are 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. Installing the MA-235-1 and MA-235-2 adapters initially gives you
the ability to upgrade to line redundancy at a later date. Section 4.2 gives more information
on module and line redundancy.
3.6.1 Channel Service Unit Connection
If your multiplexer is connected to a T1 line leased from a telephone company, a channel service unit
(CSU) is required at each end of the circuit. The T1 output of the multiplexer connects to the CSU,
which converts it into the appropriate format for transmission to the telephone company central office.
The ACS-160 Series multiplexer with the CM-5RB common module and the MA-215, MA-235-1, or MA-
235-2 module adapter has an ANSI T1.403 and AT&T TR54016-compliant CSU built in. This feature
eliminates the need for an external CSU and allows you to connect a T1 directly to your multiplexer.
Section 3.6.2 gives more information on CSU configuration.
3.6.2 ACS-160 Use with Integrated CSU
Connect your T1 line to the MA-215, MA-235-1, or MA-235-2 module adapter on the ACS-160 Series
multiplexer using an RJ-48C connector. The module adapter is properly configured at the factory and
no change is necessary for connection to a T1 line. Figure 3-12 shows the Pin 1 and 8 orientation for
the MA-215, MA-235-1, or MA-235-2 module adapters and the RJ-48C connector.
Figure 3-12. MA-215, MA-235-1, or MA-235-2 T1 Port and RJ-48C Connector Pin Orientation
DB-15
Clock timing input
Clock timing output
Remote control port
T1 signal connectors
RJ-11
RJ-48C
RJ-11