Avaya 3641 Fascicule

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. 

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. Y

ou should not have to force it into the handset.

Turn handset on

Press and hold the 

 key until two chirps sound.

Turn handset off

Press and hold the 

 key

. One chirp will sound. If you are in a call, hang up first, then 

turn off the handset.

Unlock the keypad

Press the 

 softkey

, then 

#, to unlock the keypad.

Lock the keypad

Press the 

 softkey then 

, to manually lock the keypad.

Make an internal call

Press the 

 key

, wait for a dial tone, then dial the extension.

Make an external call

Press the 

 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 

 and the number key corresponding to the desired line. Y

ou 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 

 key and hold the earpiece to your ear

. Y

ou 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. T

o answer this call, put your first call on hold and 

press the 

 key

, then the line number of the second call.

Answer with headset 

Press any key (other than 

) to answer a call when a headset is plugged in.

Silence while ringing

Press the 

 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 

 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 

 softkey and then press the 

 softkey

.

Resume a held call

Press the 

 key followed by the line number key

.

Mute the microphone

Press the 

 softkey and then press the 

 softkey

.

End the call

Press the 

 key

. Be sure to do this at the end of each call to return to the standby mode.

Change profile

Press the 

 softkey in standby mode and use the 

 keys to select a new profile. The 

selected profile is marked with an asterisk (*).

Display additional 

features

Press the 

 key while off hook to display additional features that have been customized 

for your communication server

.

Turn on the backlight

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The PTT feature allows the A

vaya 3645 handsets to operate in a group broadcast mode, where a single handset can trans

-

mit to multiple listeners, like a two-way radio.

Make a PTT call

To call on the default channel, from standby mode press and hold the 

 button. W

ait 

for the display to show 

 and then hold the handset approximately two inches 

from your mouth and speak.

Respond to a PTT call

Press and hold the 

 button during the 10-second wait period.

End wait period

Press 

.

Select a different 

 

PTT channel

Press and release the 

 button. Select a different channel from the list. Use the 

 

keys or volume side buttons to highlight the desired channel. Press 

 to transmit.

End one PTT call and 

start another one

Press the 

 key to exit the PTT call. Press and release the 

 button and select a 

different channel from the list. Press and hold the 

 button to begin transmitting on the 

different channel.

Receive a PTT call while 

in a telephone call

Press the 

 key to end the telephone call. Now you can hear the PTT call.

Transmit on the 

 

priority channel

Press and release the 

 button. Select the priority channel from the list. Press and hold 

, then speak.

End a PTT call

Press the 

 key to exit the PTT call.

Change PTT volume

Use the 

 and 

 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 

 key

. PTT transmissions will be pre-empted by the telephone call.

Start a telephone 

 

call during a PTT 

 

transmission

Press the 

 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 V

ibrate disable PTT by default) or unsubscribe from 

all PTT channels.

Subscribe to additional 

PTT channels

Press 

 to open the 

 and select Push-to-talk.

Select 

 and then select the channels you want to add. Subscribed 

channels are marked with an asterisk (*).