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[Setting telephone's talking volume levels]
When the talking volume is low, set it using the switch SW101 (for Line 1) or SW201 (for Line 2) on the
AI-900AL card as illustrated below.
Setting of telephone volume switches on the AI-900AL card
AI-900AL
SW101
SW201
D210
D110
CN1
Telephone
volume
switch
Telephone's talking volume (Line 1)
Telephone's talking volume (Line 2)
Front view of
the circuit board
12
ON
12
ON
12
ON
Telephone's talking volume setting
Volume "low"
(Factory-preset)
Volume "middle" Volume "high"