NEC 1090025 Hardware Manual - Page 34
Connecting Extensions and Lines, Extension and Line Connections
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Connecting Extensions and Lines Connecting Extensions and Lines Extension and Line Connections Important Install station equipment connected to Digital Station and Analog Station Cards as on-premises extensions only. The Main Equipment Cabinet provides 8-pin mod jacks for connecting extensions and lines. Using the Installation Cable (P/N 808920) makes it easy to connect the mod jacks to standard 66M1-50 connecting blocks. These cables have six 8-pin modular jacks on one end and are unterminated on the other. Each jack connects four extensions or lines. To connect all 26 extensions and 8 lines, you'll need 3 installation cables and 3 associated 66M1-50 connecting blocks. Cable 1 2 3 Extension and Line Cabling Jack STA 1-4 Description First 4 built-in digital station ports. STA 5-8 Second 4 built-in digital station ports. STA 9-12 First 4 station ports in the top position. STA 13-16 STA 17-20 Second 4 station ports in the top position. First 4 station ports in the middle position. STA 21-24 Second 4 station ports in the middle position STA 25-26 Door 1-2 Built-in analog station ports. See Installing a DSX Analog Door Box on a BuiltIn Door Box Port (page 49). CO 1-4 CO 5-8 Four built-in lines. Four additional lines provided by the line expansion card installed in the bottom position. 28 ◆ Installation DSX-40 Hardware Manual