Comdial DSU II SCS84125J Station User's Manual page 121

• If you are using a handset and the other party is using a
speakerphone, avoid breathing heavily into your microphone.
Avoid other sounds that may affect the distant telephone's
sound-activated switches.
• In some situations, such as when either you or the distant party
are in a noisy environment, you may have to lift your handset to
ensure a clear conversation.
• When both you and the distant party use speakerphones, the
sound-activated switches can occasionally detect both voices
simultaneously, thus blocking out both voices.
August, 03
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