IBM -4900 - Manual (Page 23)

2. Press
3. Press a digit X where X is for line numbers I-4.
4. Press [0], [I] for ON, or [0], [0] for OFF.
5. Press [MUTE].
6. A short ring will be heard to signal successful programming.
PROGRAMMING RINGER ON/OFF
The ringer may be turned OFF and ON for incoming calls on a line-by-line basis. To set the ringer value
for an individual phone line:
I. Press [STORE].
2. Press
3. Press a digit X where X is for lines I-4
4. Press [0], for ON or [0] for OFF.
5. Press [MUTE].
6. A short ring will be heard to signal successful programming.
NOTE: The default value is ON 4 lines.
ADJUSTING VOLUME LEVELS
Adjusting Ringer Volume
There are 3 levels of volume adjustment (low, middle, and high) for the ringer. To adjust the volume,
press the [VOLUME] key (beneath the dial keys) up or down when receiving a call or when the phone is
idle.
NOTE: The default level is the
Adjusting Speakerphone Volume
There are I6 volume levels for the speakerphone. To adjust first press the [SPKR] key, then press the
VOLUME] key up or down to a desired volume level. A short ring will be heard when the volume is
set at the maximum or minimum level.
Adjusting Handset and Headset Volume
While using the handset (or headset) the volume may be adjusted by pressing the handset
key repeatedly until the desired level is reached. There are 3 levels (low, middle, high). After reaching
the highest level, the handset volume will cycle to the low setting if the [VOLUME] key is pressed
again.
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