Siemens 600Series - Manual (Page 49)

Using Your Phone 2-13
2.
U
sing
Y
o
u
r P
hone
Voice Transmission
A ROLMphone speakerphone only allows voice transmission in one
direction at a time. Therefore, you and the other party cannot talk
simultaneously. Also, if you are speaking you may not hear voice
interruptions or background noise, but this does not mean your call has
been disconnected.
If the noise level in your room is high, or the other party is speaking
too softly, you can increase the other party’s voice volume by pressing
the Volume Up ▲ key. If the other party’s voice is too loud, you can
increase your ability to interrupt by pressing the Volume Down ▼ key.
If the volume adjustment cannot compensate for the high noise level,
you can use the handset to continue the conversation.
Since the speakerphone’s microphone is located underneath the right
front side of the telephone, objects need to be kept away from that area
to ensure clear transmission. Also, if your telephone is near a large
object that reflects sound and you are further away from the telephone
than the object is, your voice volume may be reduced and your voice
may sound hollow to the other party. However, the party should still
be able to understand you.