Nortel Networks SoundPoint IP 550 - Manual (Page 59)

Using the Basic Features of Your SoundPoint ® IP 550 Desktop Phone
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2. Do one of the following:
— To add a new party, press the Add soft key.
Call another party as you would using or the Confrnc
soft key (outside the conference management feature). The other
parties are put on hold.
After the new party answers, press
again to join all
parties in the conference.
— To mute a party, select the party, then press the Far Mute soft key.
The muted party can hear all parties, but no party can hear the muted
party.
If you press instead of the Far Mute soft key, all other parties
can hear each other, but they cannot hear you.
Press the UnMute soft key to un-mute the party.
Note The Add soft key appears only if you can add more parties to the conference call.
Your system administrator determines the maximum number of conference
participants. The default number is three. For more information, contact your
system administrator