Northern Telecom DMS-100 Series Technical Description, Installation, Operation And Maintenance Instructions page 12

Volume Adjustments..
Assignable Keys
• Handset, headset, handsfree, and alerting tone volume settings
are stored automatically with the activation of the Volume
Up/Volume Down key. Handset, headset and handsfree volume
settings revert to default values (mid-point volume) after local
power failure. When the loop voltage is interrupted, the alerting
tone reverts to nominal (mid-point volume) and the on-hook
dialing setting reverts to minimum.
•
On-hook dialing volume setting can be stored by simultaneously
depressing both ends of the Volume Up/Volume Down key.
•
Handset receive level is reset to nominal each time the handset is
placed into its cradle.
•
The previous headset receive level is automatically recalled each
time the headset is plugged in.
•
When the headset is used together with the handset, the headset
volume setting is used for both.
3.17 Volume adjustments are made while the relevant path is enabled,
e.g. the volume for alerting tones can only be adjusted while alerting is
in progress and the Handsfree speech volume level can only be adjusted
while listening through the Handsfree feature.
3.18 Handset,
Adjustments. Holding down the right hand side of the volume
adjustment key will increase the volume until the key is released or
maximum volume is reached. Holding down the left hand side of the
volume adjustment key will decrease the volume until the key is released
or minimum volume is reached. Volume settings are automatically
stored for further calls or until re-adjusted.
3.19 On-hook Dialing (or Call Monitoring) and Alerting
Tone VolumeAdjustments. Tapping the volume adjustment key at
the right hand side will increase the volume, tapping it at the left hand
side will decrease it. The volume changes in steps each time the key is
released. The alerting tone volume setting is automatically stored for
further calls or until re-adjusted. Only the on-hook dialing (or call
monitoring) volume requires pushing down both ends of the volume
adjustment key after the desired volume level is obtained in order to
store the setting for further calls or until a re-adjustment is made.
3.20 The ten assignable feature keys can be assigned a subset of a
number of features. Examples of some of the available features are
given as follows:
Automatic Answer Mode (AAM)
Automatic Dial (AUD)
PRACTICE 297-2011-202
Handsfree and Headset Volume
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