User guide

Other Device Functions24
Operating Forum IPhone 545 SIP Telephone
Other Device Functions
Handsfree / Open-Listening Mode
You can make a call in the handsfree mode, e.g. to let anyone
present in the room listen in. To do so, press the Loudspeaker
key before or during a call. The speaker is switched on. The
red LED indicator next to the handsfree key lights up. Press the
key once again to switch the speaker off.
During a conversation in handsfree mode, you can also pick up
the handset and continue the call without handsfree / speaker.
Mute Function
If you do not want the caller to listen in to what, e.g. you are dis-
cussing with someone in the room, you can temporarily mute the
telephone. During a call press the mute key or the
Mute
softkey. The microphone is switched off. The red LED indicator
next to the key blinks and your caller can no longer hear you.
Press the mute key once again or the
Mute softkey to
switch the microphone back on.
Adjusting Volume Level
You can adjust the volume of the ringer, of the handset or of the
speaker with the volume keys .
z During call signalling you can adjust the volume of the ringer.
z While making a call, you adjust the volume of the handset or –
in the handsfree mode – the volume of the speaker.
Selecting Code Procedures
Some Forum 500 / Forum 5000 communications system features
can also be used via code procedures. These procedures can be
programmed to a Destination function key by the administrator
for you (see Programming Function Keys starting on page 49).
You execute programmed code procedures by pressing the pro-
grammed function key.