Operating instructions

TransTel Model TD-824-I Digital Telephone System – System Installation
Page 31
CAUTION!: Avoid shorting Tip and Ring together. It may damage the TD-MBU or TD-STC board.
• Connections to telephones are made pins
2 & 3 and pins 1 & 4.
• A cable cover is provided with the KSU.
Station cables can enter from either the top
or bottom as desired. Remove one or both
ends of the cover as required and route the
station cable through the hole. Terminate
the station wires with the connectors that are
provided. The stations will connect to the
KSU as shown on the main panel (above) on
connector locations 1 ~ 4 of each station
card.
• Connect Tip terminal with GRN
terminal(screws) of the modular jack, Ring
with RED
• 2-conductor wiring is required for Key
Telephones.
• 2-conductor wiring is required for Single Line
Telephones.
• Incorrect connections may cause a system
malfunction or equipment failure.
DK-1 A-B Switch
Open the overlay of the function key on the DK telephone and select the 1
st
or 2
nd
station. Dip switch to the right for
the A or 1
st
station. Dip switch to the left for the B or 2
nd
station. DK2 and DK3 telephone sets change from A to B
by depressing a recessed pushbutton with a paper clip or toothpick.