NSL Relay Cabinet Installation and Wiring
Version 3.7 Telephone Access System Installation and Operation Manual 69 (119)
LT-969 Copyright January 2017
5.1 NSL Relay Cabinet Mechanical Installation
The NSL Relay cabinets contain the telephone switching equipment and are
typically mounted in the electrical/telephone room of a building.
NSL Relay cabinets are factory assembled in one of the following enclosure
sizes:
• TX3-NSL-8M NSL Unit: 27 inch high enclosure
• TX3-8EC NSL Expander: 13 15/16 inch high enclosure
• TX3-16EC NSL Expander: 27 inch high enclosure
The TX3-8EC NSL Expander includes the 13 15/16 inch enclosure. The TX3-
NSL-8M Relay Cabinet includes the 27 inch enclosure. The TX3-16EC NSL
Expander includes the 27 inch enclosure. See Figure 37 and Table 3.
Figure 37. NSL Relay Cabinet
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