3Com 2101 - Manual (Page 18)

18 C HAPTER 2: NBX B USINESS T ELEPHONES
15 Redial button — Redials the last telephone number or extension that
you called. See “Redialing a Call” in Chapter 5 .
16 Speaker button — Enables you to use the speaker phone feature. Press
the Speaker button before you dial the call, when your telephone is
ringing, or while a call is in progress. To turn the speaker phone off and
resume the conversation, pick up the handset.
17 Volume control buttons — Adjust the volume of the ringer, the
speaker, and the handset. See “Setting the Volume” in Chapter 5 .
18 Infrared Port (NBX 2102-IR Telephone only) — Receives infrared
signals from a hand-held device running the Palm Operating System. See
“Palm Integration” in Chapter 6 .
19 Mute button — Enables you to prevent callers from hearing what you
are saying during a telephone call. Press the Mute button to turn off the
telephone’s microphone when you are using the handset or when your
telephone is in speaker phone mode. To turn off the Mute feature, press
the Mute button again.
20 Hands Free button — Allows you to answer internal (intercom) calls
without picking up the handset. To activate this feature, press the
Hands Free button before calls come in to your telephone. The indicator
lights when the feature is enabled. When you receive an internal call,
your telephone sounds a tone and activates the speaker phone.
External calls (calls from outside the NBX system) ring to your telephone
as usual.