Install and Wire Telephones
Task List: Typical Emergency Transfer Panel and Telephone Installation
536
SI Installation and Upgrades
June 2004
5
Make cross-connections for each emergency trunk/emergency station pair.
The 808A is connected to the Main Distribution Frame (MDF) by means of a B25A cable.
Figure
210, Connections for Telephone Used for Emergency Transfer,
on page 540 shows the
connections at the trunk/auxiliary field for a telephone used only for emergency transfer.
Figure 211, Connections for Telephone Used for Emergency Transfer and as Normal Extension,
on page 541 shows the connections at the trunk/auxiliary field for a telephone used for emergency
transfer as well as a normal extension.
6
On the trunk identification label at the bottom of the panel, record the trunk line, extension, and
location for each circuit.
7
To each voice terminal designated as an emergency terminal, attach a label identifying it as such.
The labels are provided with the unit.
8
Check the system for normal operation as follows:
— Place the test switch (switch 12) in NORMAL OPERATION.
— Ensure the power supply is providing -48 VDC at 80 mA maximum. The power LED
should be ON.
— Check wiring connections.
— Verify there is dial tone on all emergency transfer sets.
If all of the above conditions are not met, remove the panel from service and replace it with a new
panel.
9
Check the system for transfer operation as follows:
— Place the test switch (switch 12) in the ACTIVATED position.
— The power LED should be OFF.
— Verify there is dial tone on all emergency transfer sets.
If all of the above conditions are not met, remove the panel from service and replace it with a new
panel.
