Iwatsu ICON Series IX-5910 Owner's Manual page 196

Volume Control:
The UP and DOWN arrow volume control keys are used adjust the Handset,
Speaker, and Ringer volume based on the state of the telephone.
Enterprise 18i/d
VOL
SET
IN OUT
Receiver (Handset) Volume - When using the Handset, the volume
control key allows you to adjust the handset volume to one of three levels.
Speaker Volume - When using the Speaker, the volume control allows
you to adjust the speaker volume to one of eleven levels.
Ringer Volume - Pressing the ringer volume control key allows you to
adjust the ringer volume to one of four levels.
Many Iwatsu Enterprise-CS features can be operated by using the menu
keys, dialing a feature operation code or using a one-touch multipurpose
key, if your telephone has one assigned for that specific feature. The feature
code numbers listed in this manual are preset in the Iwatsu Enterprise-CS.
Your system installer may assign a different code number for any feature
based on individual system requirements.
DIGITAL TELEPHONE USER GUIDE - 176
Enterprise 12i/d
V O L V O L