NEC SL1000, Техническое учебное пособие

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NEC Confidential © NEC Corporation 2009
Page 6
Appendix : Notice for No.4 KSU
Any trunk (Analog, ISDN BRI/PRI) does NOT work .
Power Failure circuits are not available because of no trunks support.
Multi-Line Terminals, SLTs and DSS Consoles work but Door phone and Relay do NOT work .
Due to the cable length limitation, installation position of No.4 KSU must be careful.
No.4 KSU (No.3 Expansion KSU) has following limitations.
Main KSU
(1632M KSU)
No.1 Exp KSU
(1632ME KSU)
No.2 Exp KSU
(1632ME KSU)
No.3 Exp KSU
(1632ME KSU)
Cable length is
not enough!!
Main KSU
(1632M KSU)
No.1 Exp KSU
(1632ME KSU)
No.2 Exp KSU
(1632ME KSU)
No.3 Exp KSU
(1632ME KSU)
Expansion cable is special design and can NOT be extended by yourself to avoid any transmission error.
Newly
added
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