User guide
Overview
26 Comdial Sept ‘04
2. Dial extension number (called telephone rings or tone is 
heard).
3. Speak toward telephone or lift handset if privacy is desired.
1.7 Speakerphone Usage Guidelines
When using your EP100, 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 strength-
ened.
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).
• Both parties can not talk at the same time. You must wait for 
silence out of your loudspeaker before talking. You must stop 
talking to hear the other party.
• Background noise may prevent the sound-activated switches 
from operating properly. Avoid placing the EP100 where it will 
detect sounds from keyboards, printers, paging systems, 
typewriters, and other equipment.
• Speak slightly louder than normal and with a clear, authoritative 
voice. For the microphone to best detect your voice, speak 
within three feet of it and face the telephone.
• Raising the volume of the loudspeaker makes it easier for the 
sound-activated switches in your telephone to select the distant 
party’s voice. Lowering the volume of the loudspeaker makes it 
easier for the switches to select your voice.
• Since the system takes several seconds to provide the best 
switching, constant sound patterns—such as elongating your 
words and playing externally-supplied music—may prevent the 
sound-activated switches from operating properly.










