NSL Relay Cabinet Installation and Wiring
TX3 Telephone Access System Installation and Operation Manual 61
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 31 and Table 4.
Figure 31. NSL Relay Cabinet
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