Toa N-8000 Series - Manual (Page 377)

3-73
Chapter 3 INSTALLATION & WIRING
13.10. C/O Interface Unit Connection
[General description of connection]
For cables, refer to p. 3-81 .
1. Power supply connection
Connect the supplied power supply cord to AC
Mains or a UPS (Uninterruptible power supply).
About power supply cord handling
The supplied power supply cord is designed for
exclusive use with the N-8000CO.
Never use it with other equipment.
2. C/O line connection
Connect the C/O line to the PSTN (public switched
telephone network) using the supplied mini-clamp
connector.
(Refer to p. 3-83 , Mini-clamp connector connection.)
3. Network connection
Can be connected to a network of 10BASE-
T/100BASE-TX in auto-sensing.
Use a straight through cable of UTP category 5 or
more for this connection.
N-8000CO C/O interface unit
Be sure to ground.
To AC mains or a UPS
(Uninterruptible power supply system)* 3
Note
If there is a danger of lightning strikes,
insert an appropriate surge arrester
into the power line.
RJ-45 connector
To network
A pair of twisted pair cables
U.S.O.C * 2
RJ11C or W
Central office line
(or PBX extension)
Mini-clamp connector
232D-02S1B-DA5 (DDK)
(supplied with the N-8000CO)
1
2 3
Protector * 1
* 1 Install the protector if the telephone
company has not already installed it.
* 2 This terminal is installed by the telephone
company.
Note
The Interface Unit’s DC resistance is 327 Ω
(maximum).
Depending on line resistance conditions, the
unit might not be useable.
* 3 Select an appropriate UPS taking into consideration the total power consumption of all system components
and the required backup time. On-line uninterruptible power supply (UPS) is recommended.
Reference
C/O interface unit: 6 W (rated) for CE version, 6 W (rated) for CU version
8-Port 10M/100M Switching Hub: 10W (Differs depending on products.)
To reduce the risk of fire, use only No.26 AWG or
larger telecommunication line cord.
CAUTION