User`s guide

The attendant can use a headset with the display console. The console has a
Disconnect button that allows the attendant with one touch to disconnect an
outside call without lifting the handset, or turning off the headset, and then
dial another telephone number. The cord on the headset plugs into the
headset adapter, and the adapter connects to the phone with a modular cord
that comes with the adapter.
How to Use the Headset Adapter
To place a call:
1 Touch On/Quiet on the headset adapter.
The green light next to the button goes on.
2 Dial the outside number.
To answer a call with the 500A or 502A adapter:
1 Touch On/Quiet on the headset adapter.
To answer a call with the 502B adapter:
1 Program an Auto Answer-All button on your phone. See “Auto
Answer-All” in Section 3, “Reference.”
2 Press Auto Answer-All.
The green light next to the button goes on.
3 Touch On/Quiet on the headset adapter.
The green light next to the button goes on.
4 A warning tone alerts you to an incoming call.
To mute the microphone:
1 Hold down On/Quiet on the headset adapter.
To disconnect:
1 Touch Off on the headset adapter.
The green light next to On/Quiet goes off.
Power Failure Telephones
In case of a power failure, a basic Touch-Tone or rotary telephone connected
to a Power Failure Telephone jack in a control unit module has access to the
first line on the same module. See Figure 2-15 to identify the PFT jack and
the first line on different line modules.
When there is a power failure, the system shuts off except for power failure
telephones. (The PFT jack does not function when the system is up and
running.) If you have plugged a Power Failure Telephone into the PFT jack,
the basic telephone automatically goes on when a power outage occurs. You
can use the power failure telephone to place and receive outside calls.
NOTE: You cannot use a MERLIN II system phone as a power failure
telephone.
2-20 Phone Accessories