HYBREX DK6-21 - Conversation Adjustments; Switching Between Handset and Handsfree; Volume Control

D. DURING CONVERSATION
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D.08 Switching Between Using Handset And Handsfree
You may choose to use Handset or Handsfree alternatively.
From Handsfree to Using Handset:
. Lift Handset.
From Using Handset to Handsfree:
→ . Press [SPK] key, Handset back on hook.
D.09 Volume Control
During a conversation, you may Increase or Decrease volume by this function. Two
volume levels can be chosen (for handset).
During Conversation Adjustment:
→ . Press [VOL ▲] key for voice up.
. Press [VOL ▼] key for voice down.