4-3
is equipped with optional trunking). The “in-use” indication warns you that someone else is
currently talking.
• Red flashing “busy” indication: May occur when a key is activated to talk to an IFB or a
remote intercom system. This indicates that some other keypanel with a higher priority is
currently talking and you cannot talk at this time.
Listen Indicator:
• Solid green: Listen is activated. (This indication will only be provided when you manually turn
listen on by tapping or pressing upward on a key. It will not occur if listen has been
automatically activated during talk.)
CALL WAITING OPERATION FOR INCOMING CALLS
As previously described, the talk indicator for a key will flash when there is an incoming call to
that key, and you may activate that key to talk back. Also, if DIP switch 1 was set to the Open
position, the caller's name will appear in the call waiting window, and you may press down on the
call waiting key instead to talk back. If a caller is not already assigned to an intercom key, the
caller's name will always appear in the call waiting window, and you must use only the call
waiting key to talk back.
If a second call is received in the call waiting window while a caller's name is already displayed
there, the call waiting display will start to flash. Also, the topmost LED next to the call waiting
key will turn on. When there are multiple calls, use the call waiting key as follows:
1 To talk to the currently displayed caller, press down on the call waiting key.
2 To clear the currently displayed caller name, briefly tap up on the call waiting key. The next
caller's name will then appear in the call waiting window, and you may press down on the call
waiting key to talk back.
3 Continue talking to callers and clearing their names until the call waiting window displays
dashes (no callers). Also, when all calls have been answered, the green LED next to the call
waiting key will turn off.
OPERATION WITH THE TIF-951 & TIF-2000 TELEPHONE INTERFACE
If DIP switch 3 (see Section 2) is set to the Closed position, you can use the keypanel to answer
incoming telephone calls that have been received by the TIF-951 or TIF-2000. A talk and listen
key pair on the keypanel must be assigned to talk/listen to the TIF-951 or TIF-2000 as previously
described. Use the assigned keys as follows:
1 Leave the talk and listen keys in the off position, except when answering a call.
2 When there is an incoming phone call, the talk indicator will flash red. Activate the talk key to
talk back. You may also have to activate the listen key.
3 When the conversation is finished, turn the keys off.
Important!
The keypanel does not hang up the phone line when you turn the keys off. Usually the TIF-951 or
TIF-2000 does this by detecting when the caller has hung up. However, this may not be possible
in some phone systems, and the TIF-951 or TIF-2000 may remain off hook. In this case you must
manually disconnect using the OFF switch on the front of the TIF-951 or TIF-2000.
NOTE
Unless there is an incoming call to answer, activating a key on the keypanel that is assigned to the
TIF-951 or TIF-2000 will have no effect.
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