Vertical Communications SCS 8324S, SCS 8312S, SCS 8324F Appendix C Speakerphone Characteristics

DSUII Attendant User’s Guide

APPENDIX C SPEAKERPHONE CHARACTERISTICS

When using your speakerphone, the microphone and loudspeaker are farther away from you than when you use a handset. Both the signal from the loudspeaker and the signal to the microphone must be strengthened.

When microphones and loudspeakers are close together (such as in a speakerphone), additional amplification typically generates a ringing sound (public address systems do this if the volume is too high or the microphone is too close to a loudspeaker).

8.13Full-Duplex Speakerphone Characteristics

The Impact SCS 8324F-** speakerphone uses the latest full-duplex speakerphone technology. (Full-duplex technology enables both parties on a speakerphone call to speak simultaneously—half-duplex speakerphones allow only one person to speak at a time.) The 8324F-

**will operate in either full-duplex or half-duplex mode depending on the current line conditions.

At the beginning of each call the telephone must perform a “speech training” test. To achieve optimum performance from the full-duplex speakerphone, Comdial recommends that each user in turn speak about 10 consecutive words to allow the telephone to “train” itself. Note that during the “speech training” test, the speakerphone is oper- ating in half-duplex mode.

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