Plantronics CS55 - Manual (Page 7)

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CHECKING COMPATIBILITY
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If you cannot hear a dial tone through your headset, use a coin or small screwdriver to
turn the telephone configuration dial until you can. Make sure that a number is aligned
with the position indicator.
Place a call to someone you know. While speaking, turn the configuration dial through
the four positions. Select the position that provides the best sound quality for both you and
the recipient.
NOTE: The compatibility setting of “1” is set at the factory to work with most phones.
However, if you do not hear a dial tone, if either you or the recipient is having trouble
hearing, or if you experience buzzing/hissing, please follow the directions below.
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With Handset Lifter (Optional)
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With Handset Lifter (Optional)
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MAKING/ANSWERING/ENDING CALLS
To make/answer a call:
1. Press the call control button to raise the handset lifter.
2. Use the telephone keypad to dial the number.
To end a call:
Press the call control button to lower the handset lifter. (Phone will hang up.)
NOTE: If either you or the recipient have trouble hearing, please check compatibility (page 13).
To first test proper set up of the handset lifter:
1. Press the call control button on headset to activate handset lifter and lift handset from
phone. Dial tone should sound in headset if the handset is raised high enough.
2. If no dial tone, adjust lifter height switch or reposition lifter under handset. If you still
do not hear a dial tone, you may need to insert extender arm (see page 22) or check
compatibility (page 13).
After verifying dial tone, use mounting tape to secure handset lifter in position.