4 – Setup & Configuration ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 4-17
Intraplex Products
Figure 4-10. Multiple Frame-Synchronized Systems
4.5 T1 Frame Format & Line Code (TSEL Group)
The T1 selection (TSEL) group is used to set the T1 frame format and line code. Table 3-8 explains the
functions available in the TSEL group. Section 2.2.1 – T1 Digital Transmission gives a detailed
discussion of T1 frame formats and line codes.
4.5.1 CSU Configuration
The CM-5RB common module is designed for internal or external channel service unit (CSU)
applications. The CSU configuration must match your T1 carrier provider’s requirements. To configure
the CM-5RB module’s CSU, perform these steps:
1. Press down repeatedly on the GROUP switch until the display reads TSEL.
2. Press down repeatedly on the SET/NEXT switch to cycle through the available functions in the
TSEL group. The green (top) bi-level indicator light turns on when the display shows the currently
set selection for the CSU. The red (bottom) indicator light turns on when the display shows the
other configurations not selected for CSU.
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