AT&T MERLIN 820 User Manual

Trouble on an Accessory
Step 9.
At the control unit, unplug a modular line cord from the Tel. Co. Lines
jack and plug it into the PFTT (see Figure 43).
POWER FAILURE
TRANSFER
TELEPHONE CORD
MODULAR
LINE
NETWORK
CORD
INTERFACE
POWER FAILURE
TRANSFER
TELEPHONE
Figure 43—Plugging a Modular Line Cord into the PFTT
Step 10.
Place a call using the PFTT.
IF
THEN
The call is completed normally,
Trouble found. It is the PFTT
modular line cord connected to the
Type III Cartridge.
Replace the
modular line cords to their original
positions. Reconnect the control
unit power cord to the ac outlet.
Then read the Maintenance
Exchange Procedures at the end of
this manual.
The call cannot be completed,
Trouble found. It is the PFTT.
Replace the modular line cord to
its original position. Reconnect
the control unit power cord to the
ac outlet. Then read the Mainte-
nance Exchange Procedures at the
end of this manual.
Page 84

AT&T MERLIN 820 Specifications

General

Brand	AT&T
Model	MERLIN 820
Category	Conference System
Language	English