Avaya 3641 Operating Instruction page 10

Start a telephone Press the START key and dial the number. PTT transmissions
call during a PTT will be pre-empted during the telephone call.
transmission
Turn off PTT Change to a different profile (Silent and Vibrate disable PTT
by default) or unsubscribe from all PTT channels.
Press Cfg to open the Config Menu and select Push-to-
Subscribe to
additional PTT talk.
channels Select Subscribed Channels and then select the channels
you want to add. Subscribed channels are marked with an
asterisk (*).
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