Extension Cabling; Figure 2-20 Sub-Cover Open And Hold; Figure 2-21 Trunk Cabling - NEC SL1000 Hardware Manual

SL1000
1. Open the Sub-Cover.
2. Insert the modular plugs of the trunk line cords into the analog trunk modular jacks on the system.
The lightning protectors MUST BE INSTALLED on a trunk.
• Unused CO port (CO2 to CO4) can be used for Audio port (External paging, External MOH or BGM).
• The program setting must be required when using Audio port instead of Trunk port in the system.
• The External Paging can be set for 408M-A1 PCB at each KSU.
• The External MOH and BGM can be set only one port for each External source in the system.
• Using a single port, Trunk port and Audio port can not be used at the same time.
• Door phone box can not be used on the Trunk port.

1.6.4 Extension Cabling

Before Plug-In the Multi-Line Telephone, DSS Console, Single line Telephone,
Doorphone or External Sensor Device, ensure all the Main and Expansion KSU
are powered off and unplug the AC cord.
2-14
Sub-Cover

Figure 2-20 Sub-Cover Open and Hold

Modular Plug
Wire Position for each Port
T

Figure 2-21 Trunk Cabling

Push to hold
Trunk Port Position
CO4 CO3
CO2 or Audio in/out
(External paging)
CO3 or Audio in
(External MOH)
R T: Tip
CO4 or Audio in
R: Ring
(BGM)
ISSUE 1.0
Open
CO2 CO1
Installation