Interquartz IQ331 - Manual (Page 6)

5
MULTIFUNCTIONAL INDICATOR LIGHT
There are two different functions:
Ring Indicator: Flashes when the telephone rings with an incoming call
Message-Waiting Indicator: Illuminates when a message is waiting in your voicemail
system (depends on system compatibility). The built-in
Message Waiting option suits any neon (80 VDC) type
message waiting system and also the telephone has
Ericsson BP250 Message Waiting built-in (other system
types are optional extras).
RINGER PITCH CONTROL
The pitch of the ringing sound may be altered by rotating the control.
RINGER VOLUME SWITCH
The three available positions allow selection of OFF (no sound), LOW volume, and
HIGH volume of the telephone's ringing sound during an incoming call.
ALPHA-NUMERIC KEYPAD
The standard numeric digits are available for normal dialing. The alphabetic characters
are provided to allow full access to services that require the entering of numerals and
letters.
CRADLE SWITCH
Located in the handset cradle, this plastic lever is depressed by the handset (when
placed in the cradle) to cut off the line. Note: Depressing this cradle lever too briefly
when intending to terminate a call may result in an accidental "hookflash" that will
inadvertently place the call on hold. This is known as "phantom calls" because the held
call will probably ring again at your extension within a few minutes (the other party will
have hung up, so it will seem as if you were called by a phantom, hence the name
"phantom calls"). If you experience this problem, when terminating your call please
depress the cradle lever a little longer before making/receiving your next call
(i.e. it is not a system or telephone fault).