NEC DS1000 Correspondence Course Workbook page 109

8-Pin
Connector
NEC America
DS1000/2000 Correspondence Course
To test the Power Failure Telephone:
1. Connect a Power Failure Telephone. Use the following figure for
guidance.
2. Power down the system.
3. At the Power Failure Telephone, lift the handset.
You should hear dial tone on the trunk you connected.
4. Place a test call.
If power is restored while a cut-through call is in progress, the call
is maintained until the user hangs up the Power Failure Cut-
Through telephone.
One-Pair Cross-Connect
To Power
Failure
Station
Telephone
Block
connector on
ATRU PCB
25 Pair
Installation Cable
Connecting a Power Failure Telephone
DS2000 System Installation
WHT-BLU
GRN
BLK
625
Cross
Modular
Connect
Jack
Block
Power
Failure
Telephone
DS1000/2000 Workbook
BLU-WHT
RED
YEL
109