Basic Handset Operation Summary
The handset’s Battery Pack must be fully charged before its first use. See the User Guide for full information. Place the
handset into the charger for a minimum of two hours.
If you want to Then
Remove the Battery Pack Press down on the latch on the Battery Pack at the back of the handset and pull the Battery
Pack towards you. The Battery Pack releases outward.
Replace the Battery Pack Slide the lip of the Battery Pack into the bottom of the cavity. Push the top of the Battery
Pack until it snaps into place. You should not have to force it into the handset.
Turn handset on Press and hold the END key until two chirps sound.
Turn handset off Press and hold the END key. One chirp will sound. If you are in a call, hang up first, then
turn off the handset.
Unlock the keypad Press the Unlk softkey, then #, to unlock the keypad.
Lock the keypad Press the Cfg softkey then NavOK, to manually lock the keypad.
Make an internal call Press the START key, wait for a dial tone, then dial the extension.
Make an external call Press the START key, wait for a dial tone, then dial the number just as you would from your
desk phone.
Select a line If multiple lines are available, your handset will default to line 1. If a different line is
desired, press LINE and the number key corresponding to the desired line. You will hear a
dial tone.
Dial a number Once you hear a dial tone, press the number keys to dial the number.
Answer a call To answer a call, press the START key and hold the earpiece to your ear. You may also
activate the speakerphone function or use a headset.
Answer a call on
a second line
If you are on a call and hear subdued ringing, a call is coming in on a second line. The line
number on the display will be flashing. To answer this call, put your first call on hold and
press the LINE key, then the line number of the second call.
Answer with headset Press any key (other than END) to answer a call when a headset is plugged in.
Silence while ringing Press the END key to silence the ring.
Change the ring volume Press the up/down volume buttons on the side of the handset during ringing.
Activate or deactivate
the speakerphone
Press the Spkr softkey and speak towards the handset. Note that this feature may not be
activated in your communication server.
Adjust the
speaker volume
Press the volume up/down buttons on the side of the handset during the call.
Adjust the
headset volume
Press the volume up/down buttons on the side of the handset during the call.
Place a call on hold Press the More softkey and then press the Hold softkey.
Resume a held call Press the LINE key followed by the line number key.
Mute the microphone Press the More softkey and then press the Mute softkey.
End the call Press the END key. Be sure to do this at the end of each call to return to the standby mode.
Change profile Press the Prof softkey in standby mode and use the Nav keys to select a new profile. The
selected profile is marked with an asterisk (*).
Display additional
features
Press the FCN key while off hook to display additional features that have been customized
for your communication server.
Turn on the backlight The backlight comes on when any key is pressed or when there is an incoming call and stays
on for 10 seconds. It turns off after 10 seconds if another key is not pressed within that period.
PTT Operation Summary
The PTT feature allows the Avaya 3645 handsets to operate in a group broadcast mode, where a single handset can trans-
mit to multiple listeners, like a two-way radio.
If you want to Then
Make a PTT call To call on the default channel, from standby mode press and hold the TALK button. Wait
for the display to show Transmitting and then hold the handset approximately two inches
from your mouth and speak.
Respond to a PTT call Press and hold the TALK button during the 10-second wait period.
End wait period Press End.
Select a different
PTT channel
Press and release the TALK button. Select a different channel from the list. Use the Nav
keys or volume side buttons to highlight the desired channel. Press TALK to transmit.
End one PTT call and
start another one
Press the END key to exit the PTT call. Press and release the TALK button and select a
different channel from the list. Press and hold the TALK button to begin transmitting on the
different channel.
Receive a PTT call while
in a telephone call
Press the END key to end the telephone call. Now you can hear the PTT call.
Transmit on the
priority channel
Press and release the TALK button. Select the priority channel from the list. Press and hold
TALK, then speak.
End a PTT call Press the END key to exit the PTT call.
Change PTT volume Use the Up and Down volume buttons on the side of the handset while transmitting or
receiving a PTT call.
Answer a telephone
call during a PTT
transmission
Press the START key. PTT transmissions will be pre-empted by the telephone call.
Start a telephone
call during a PTT
transmission
Press the START key and dial the number. PTT transmissions will be pre-empted during the
telephone call.
Turn off PTT Change to a different profile (Silent and Vibrate disable PTT by default) or unsubscribe from
all PTT channels.
Subscribe to additional
PTT channels
Press Cfg to open the Config Menu and select Push-to-talk.
Select Subscribed Channels and then select the channels you want to add. Subscribed
channels are marked with an asterisk (*).