Avaya 3641 User manual

Avaya 3641/3645 IP Wireless Handset with
Session Initiation Protocol (SIP) User Guide
21-603938
Issue 2
June 2012

2 Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012
© 2012 Avaya Inc.
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Be aware that there can be a risk of toll fraud associated
with your system and that, if toll fraud occurs, it can result in

Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 3
substantial additional charges for your telecommunications
services.
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643-2353 for the United States and Canada. For additional
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Avaya Web site: http://www.avaya.com/support

Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 5
Contents
Chapter 1: Getting Started with SIP and your Avaya 3641/3645 IP
Wireless Handset........................................................................................9
Overview.............................................................................................................9
Battery Packs......................................................................................................9
Indications of low battery .....................................................................................10
Battery Pack removal and replacement...............................................................10
Notes on Battery Packs .......................................................................................11
Accessories.......................................................................................................11
Chapter 2: Features of your Avaya 3641/3645 IP Wireless Handset............13
Chapter 3: The Handset Display .....................................................................15
The Call Status Screen......................................................................................15
System Icons.....................................................................................................16
Call Status Icons ...............................................................................................17
Softkeys ............................................................................................................17
Nav OK Functions.............................................................................................20
Shortcut Keys....................................................................................................20
Handset Modes.................................................................................................20
Standby mode (on-hook) .....................................................................................20
Active mode (off-hook).........................................................................................21
Push-to-talk (PTT) mode......................................................................................21
Configuration menu mode....................................................................................21
Message alert mode.............................................................................................21
Menus ...............................................................................................................21
Line menu ............................................................................................................21
Favorites menu ....................................................................................................22
Symbol menu.......................................................................................................22
FCN menu............................................................................................................23
Chapter 4: Customizing your Avaya 3641/3645 IP Wireless Handset
Configuration............................................................................................25
Config Menu......................................................................................................25
Default settings ....................................................................................................28
Toggle options......................................................................................................28
Lock Keys..........................................................................................................29
User Profiles......................................................................................................29
Set as Active........................................................................................................29
Ring Settings........................................................................................................29
Telephone Ring....................................................................................................29
Message Alerts 1 and 2 .......................................................................................30
Noise Mode..........................................................................................................30
Ring in Headset/Speaker.....................................................................................30
Warning Tones.....................................................................................................30
Key Tones............................................................................................................30
Phone Settings..................................................................................................31
Keypad Autolock..................................................................................................31
Language .............................................................................................................31
Display Contrast...................................................................................................31
Use Hearing Aid...................................................................................................31
Startup Song Play/Inhibit .....................................................................................31
Predial..................................................................................................................31

6 Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012
Push-to-talk (PTT).............................................................................................32
Default Channel ...................................................................................................32
Subscribed Channels...........................................................................................32
PTT Audio Volume...............................................................................................32
PTT Tone Volume................................................................................................32
PTT Vibrate..........................................................................................................32
System Info.......................................................................................................33
Phone IP Address ................................................................................................33
Alias IP Address...................................................................................................33
SVP IP Address ...................................................................................................33
OAI IP Address ....................................................................................................33
Firmware Version.................................................................................................33
Emergency Dial....................................................................................................34
Chapter 5: Using the Basic Features of your Avaya 3641/3645 IP
Wireless Handset with SIP Software.......................................................35
Turn the Handset On.........................................................................................36
Turn the Handset Off.........................................................................................36
Change the Language.......................................................................................36
Lock the Keypad................................................................................................36
Unlock the Keypad ............................................................................................36
Place a Call.......................................................................................................36
Place an Emergency Call ..................................................................................37
Answer or Reject a Call.....................................................................................38
To reject a call:.....................................................................................................38
To answer a call...................................................................................................38
Place a Call on Hold..........................................................................................39
Answer a Second Call.......................................................................................39
Resume a Call on Hold from Standby................................................................40
Navigate among Call Tabs ................................................................................40
Forward Calls....................................................................................................40
Clear Forwarding on a Line ...............................................................................41
Do Not Disturb (reject all incoming calls)...........................................................41
Clear Do Not Disturb .........................................................................................41
Redial the Last Number you Dialed...................................................................42
Silence the Ringing............................................................................................42
Change the Ring Volume...................................................................................42
Adjust the Handset Volume...............................................................................42
Adjust the Speaker Volume...............................................................................42
Adjust the Headset Volume...............................................................................43
Change the Noise Mode....................................................................................43
Mute/Unmute a Call...........................................................................................43
End a Call..........................................................................................................43
Normal mode........................................................................................................44
Headset mode or Speakerphone mode...............................................................44
Change the Profile.............................................................................................44
Open the Config Menu ......................................................................................44
Turn on the Backlight.........................................................................................44
Chapter 6: Using the Advanced Features of your Avaya 3641/3645 IP
Wireless Handset with SIP Software.......................................................45
Place a Second Call..........................................................................................45
Place a Call on a Different Line.........................................................................46
Place a Call from Favorites Menu......................................................................46

Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 7
Answer a Call on a Second Line........................................................................47
Use Call Logs....................................................................................................48
Open a call log.....................................................................................................48
Call a number in the call log.................................................................................48
Save a number from a call log to the phonebook ................................................48
Delete a call from a call log..................................................................................49
View call details....................................................................................................49
Clear a call log or clear all call logs......................................................................49
Enable/disable call logging ..................................................................................49
Clear missed call icon..........................................................................................50
Transfer a Call (blind)........................................................................................50
Transfer a Call (consulted) ................................................................................50
Transfer an Active Call to a Call on Hold...........................................................51
Listen to Voicemail ............................................................................................51
Activate Installed Custom Applications..............................................................51
Use the Phonebook and Speed Dial..................................................................52
Search for a phonebook entry..............................................................................52
View a phonebook entry ......................................................................................52
Edit a phonebook entry........................................................................................53
Dial phonebook number.......................................................................................53
Enter a new name and number in the phonebook...............................................53
Delete a phonebook entry....................................................................................53
Make a speed dial call .........................................................................................55
Assign a speed dial number.................................................................................55
Chapter 7: Using the Push-to-talk Features of your Avaya 3645 IP
Wireless Handset......................................................................................57
Make a PTT Call................................................................................................58
Respond to a PTT Call......................................................................................58
End a Wait Period .............................................................................................58
Select a Different PTT Channel.........................................................................58
End One PTT Call and Start another on a Different Channel.............................58
Receive a PTT Call while on a Telephone Call..................................................58
Use PTT Vibrate................................................................................................59
Transmit on the Priority Channel .......................................................................59
End a PTT Call..................................................................................................59
Change the PTT Volume...................................................................................59
Answer a Telephone Call during a PTT Transmission.......................................59
Start a Telephone Call during a PTT Transmission............................................59
Turn off PTT......................................................................................................59
Subscribe to additional PTT channels................................................................60
Chapter 8: Charger Options ............................................................................61
Install the Charger.............................................................................................61
Charging Status Indicators ................................................................................61
Single Charger ..................................................................................................62
Dual Charger.....................................................................................................63
Quad Charger....................................................................................................64
Chapter 9: Cleaning and Drying the Handset ................................................65
Chapter 10: Safety Information.......................................................................67
Chargers and Battery Packs..............................................................................67
Wireless Handsets.............................................................................................68

8 Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012
Operational Warnings........................................................................................69
Potentially explosive atmospheres.......................................................................69
Electromagnetic Interference and Compatibility.................................................69
Facilities ...............................................................................................................69
Pacemakers .........................................................................................................69
Hearing aids.........................................................................................................70
Other medical devices..........................................................................................70
Use While Driving..............................................................................................70
For vehicles equipped with an airbag ..................................................................70
FCC Statement..................................................................................................70
Chapter 11: Specific Absorption Rate (SAR) Information ............................71
Handset operation normal position ......................................................................72

Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 9
Chapter 1: Getting Started with SIP and
your Avaya 3641/3645 IP Wireless Handset
Thank you for choosing the Avaya 3641/3645 IP Wireless Handset with Session Initiation
Protocol (SIP)1. These handsets provide business telephony features and functions such as
multiple call appearances, call hold, and transfer over your Local Area Network. Your handset
can call other telephone numbers and extensions within your facility as well as any external
telephone number. Your handset will only work within your facility when it is in contact with the
LAN. It will not work beyond the coverage area of the wireless LAN. Contact your system
administrator if you have questions about your facility‘s boundaries.
In this User Guide, you will find everything you need to quickly use your new handset. If you
have questions about features and functions customized for your facility, contact your system
administrator. Please read the Safety section in this guide before you set up and use the Avaya
3641/3645 IP Wireless SIP Handset with SIP.
Overview
The Avaya 3641/3645 IP Wireless Handset with SIP is a mobile handset that uses the
Avaya Aura™SIP call server (sometimes referred to as the PBX) and the Local Area
Network (LAN) to connect to other telephones at your workplace and on the public
telephone system. The handset gives you the freedom to roam throughout the workplace
while providing all the features and functionality of a SIP desk phone.
The handsets will only work when they are within range of the wireless access points at
your facility; they are not cellular or satellite phones.
Note:
Install and charge the Battery Pack before using the Avaya 3641/3645 IP Wireless
Handset. See the Battery Packs section below and Chapter 5 Charger Options.
Battery Packs
Three rechargeable Lithium-ion battery pack models are available: Standard, Extended,
and Ultra-Extended. Each Battery Pack provides the following amount of talk time (active
call/operation) or stand-by time. (Stand-by time is when the handset is turned on, but not
in an active call.)
1SIP is a Voice over IP (VoIP) signaling protocol used by the Avaya 3641/3645 IP Wireless Handsets to send and receive telephone
calls over the computer system installed in your facility. Calls are routed and managed by a SIP call server that is sometimes
referred to as the PBX.

10 Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012
Type
Talk Time
Standby Time
Charging Time
Standard
Up to 4 hours
Up to 80 hours
Up to 2 hours
Extended
Up to 6 hours
Up to 120 hours
Up to 3 hours
Ultra-Extended
Up to 8 hours
Up to 160 hours
Up to 4 hours
Note:
The type of Battery Pack is printed on the label. Remove the Battery Pack and view the
label to determine the type of Battery Pack you have been issued. Certain 3641/3645
operations/features/configuration can impact overall battery performance. For example,
the Avaya 3645 IP Wireless Handset Push-to-talk (PTT) mode and operation requires
additional battery resources. If PTT functionality is desired, it is recommended that your
Avaya 3645 IP Wireless Handset be equipped with an Ultra-Extended Battery Pack for
optimal performance. Actual power reduction is dependent on the handset volume and
loudness of speaker‘s voice. PTT works using multicast broadcasting, which must be
monitored in standby consuming power at a greater rate and while talk-time is not
reduced, stand-by time can be significantly reduced.
Caution!
Use only Standard, Extended or Ultra-Extended Battery Pack models in the Avaya
3641/3645 IP Wireless Handsets.
Indications of low battery
The handset will need to have its Battery Pack recharged periodically. The Battery Pack
icon on the handset display‘s status row indicates the amount of charge remaining.
Additionally the handset will sound warning tones and display the Battery Low message
when there are fewer than two minutes of talk time remaining.
A melody will play when the handset is powered on for the first time after being fully
charged, unless this feature has been disabled. Each Battery Pack type has a different
melody. Contact your system administrator if you have questions about the type of
Battery Pack you have been issued.
When the handset is in Standby mode, the message Battery Low and a series of chirps
indicate a critically low Battery Pack charge. The handset will not work until the Battery
Pack is charged.
Note:
Take care not to short the battery contacts on the Battery Pack with metal objects such
as coins, keys or paper clips. Shorting the contacts can cause permanent damage.
Battery Pack removal and replacement
To remove, press down on the latch on the Battery Pack on the back of the handset. The
Battery Pack releases outward.
To replace, 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 against the
handset.

Getting Started with SIP and your Avaya 3641/3645 IP Wireless Handset
Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 11
Notes on Battery Packs
Battery Pack life will vary depending on handset model, features, and system
infrastructure.
Maximum Battery Pack performance is achieved after a few charge/discharge
cycles.
If multiple Battery Packs are supplied with your handset, Avaya recommends
that each be fully charged upon receipt to prolong battery life. Battery Packs
will slowly lose charge if unused. To maintain battery potential, charge the
unused Battery Packs occasionally or alternate Battery Pack use.
After a length of time Battery Packs will lose the ability to maintain a charge
and to perform at maximum capacity and will need to be replaced. This is
normal for all batteries.
If your Battery Pack requires replacement, contact your system administrator.
Overnight charging is best done while the handset is turned off.
If the handset does not charge, clean Battery Pack, charger and handset
contacts with an alcohol swab.
When the handset is properly seated, the backlight comes on briefly and the
handset beeps to indicate that charging has begun.
Any battery which exhibits swelling, cracking or other abnormality should be
disposed of promptly and properly.
Note:
Only use Avaya 3641/3645 Battery Packs with Avaya 3641/3645 IP Wireless Handsets.
Accessories
Accessories for the Avaya 3641/3645 IP Wireless Handsets include three different
charger models, three different Battery Pack models, headsets, and several carrying
options.
Carrying devices and headsets that are specifically designed for your Avaya handset
may be purchased through your service representative.

Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 13
Chapter 2: Features of your Avaya
3641/3645 IP Wireless Handset
The handset operates much like a cell phone, and is programmed by your system administrator
to support the features commonly available in an office environment. Orient yourself to your
handset‘s features using the illustration below and the following explanatory material.

14 Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012
1. Earpiece —Delivers audio to the ear.
2. Screen —Displays information relating to the handset‘s current mode. See
Handset Modes below.
3. Softkeys —Four softkey buttons. A softkey label appears in the display area
just above the corresponding softkey when the function assigned to that
softkey is available.
4. Headset jack —Allows you to place and receive calls through a headset.
5. Up/Down buttons —Use these buttons to scroll through displayed menu
options. Use to adjust speaker volume while in a call.
6. Emergency Dial/TALK button —Avaya 3645 IP Wireless Handset model
only. The system administrator may program this button for either Emergency
Dial or Push-to-talk (PTT) functionality. Test the active mode by pressing the
button once to see which feature is active. If you are prompted to press it
twice to place an emergency call, then Emergency Dial is programmed.
Check the Config menu to determine if PTT is activated. Push and hold to
activate push-to-talk mode.
7. On hook —Also referred to as END. Use a long press to power on and power
off the handset. Use a short press to end a call.
8. Off hook —Also referred to as START. Use to obtain a dial tone or place a
call.
9. Nav and Nav OK keys —Four directional navigation keys and a Nav OK
key. Use the Nav  and  keys for menu navigation. Use the Nav OK
key to select menu items, place calls, and perform softkey functions as
described below in Nav OK functions.
10. Keypad —12 keys provide the 10 digits 0-9, the alphabetic characters, and
special characters available in context-sensitive applications.
11. FCN —Press to access the Function menu; press in combination with
assigned keys to access programmed system functions.
12. LINE —Press to access additional line appearances.
13. Battery contacts —Located along the bottom edge, the battery contacts
enable the handset to be charged in the Desktop Charger or the Dual
Charger. They should be kept clean and free of debris.
14. Microphone —Sensitive microphone transmits voice accurately and without
distortion.

Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 15
Chapter 3: The Handset Display
When first powered on, the handset screen will display the standby screen. This screen displays
a top row of system icons showing the status of the handset, followed by two lines for the
handset‘s extension number and name, a line for date and time display, and a line for the
Profile. If PTT is enabled (Avaya 3645 IP Wireless Handset model only) the default channel is
displayed. Softkey labels display on the bottom row. Use the Nav keys to display the second set
of softkeys.
[Ext. #]
[Name]
[time and date]
Profile: [Profile]
[Default PTT Channel]
▼Spkr
Logs
Phbk
▲
▼Cfg
Prof
Nois ▲
While the handset is in use, display screens include:
Call status screen
Push-to-talk screen (Avaya 3645 IP Wireless Handset model only, if
available)
Message screen (if Open Application Interface server is used)
Menu screens.
The Call Status Screen
The call status screen has the following format:
Abc4
Line 1: 3001
Enter Number
xxxxxxx_
Abc <2> ABC
Symb
Bksp
This example shows:
System icons (see table on next page)
Call tabs (A call tab appears for each call in progress.)

16 Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012
Two call tabs indicate that two calls are in progress.
The call status icon for the active call indicates that this call is
being dialed.
The call status icon for the pending call tab to the right indicates
that call is on hold.
First row text —the active call is on line 1, extension 3001
Enter Number —the handset is ready to be dialed
Dialed number (xxxx) —once this call is connected, the connected party‘s
information will appear here
Fourth row display —help or error messages, as appropriate
Softkeys offering text editing functions (see table below)
System Icons
Indicator
Function
The signal strength icon indicates the strength of the signal and can assist
the user in determining if the handset is moving out-of-range.
The battery icon indicates the amount of charge remaining in the Battery
Pack. When only one level remains, the Battery Pack needs to be charged.
The missed call icon is displayed when a call is not answered. Such calls
can be viewed in the Missed Log. It is active only when Call Logging has
been enabled by the system administrator.
The voicemail icon is activated when a new voicemail message is received
if the feature is supported by the phone emulation.
The speakerphone icon displays when the speakerphone is active.
Up and down arrows are displayed when the menu has additional options
above or below.
Left or right arrows are displayed during editing when the cursor may be
moved left or right.
The location service icon indicates the Real-Time Location System (RTLS)
is enabled.
The Noise mode icon indicates the currently-selected mode: Normal, High
or Severe.
Locked
Locked indicates that the keypad is locked to prevent accidental activation.
Use the Unlk softkey plus the #key to unlock it.
[No Service
message]
If warning tones are not disabled, an alarm will sound and a descriptive
message displays when the handset cannot receive or place calls. You
may be outside of the covered area. Walk back into the covered area. The
in-service tone indicates service is reestablished.
The download icon indicates that the handset is downloading code. This
icon only appears while the handset is running the over-the-air downloader.
It appears to the right of the signal strength icon in the same location as the
voicemail icon.

The Handset Display
Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 17
Indicator
Function
The download failure icon indicates that the handset has failed to download
code because the code is incompatible with the handset hardware. Contact
your system administrator should this icon appear.
MUTED
The muted icon indicates the current call is locally muted.
XXXX
During character entry, indicates current data entry symbol mode.
Call Status Icons
Indicator
Function
On-hook icon, Solid when in standby mode to indicate that at least one call
is still active or on hold. Flashing when incoming call is ringing.
Off-hook icon. Solid when a call is being dialed.
Hold icon. Call is on hold.
Transfer icon. Call is in the process of being transferred.
Audio flowing icon (flashing). Audio is flowing both ways on a call.
No audio icon. No audio is flowing. Call is terminating or far end hold with
audio disable.
Softkeys
Note:
When arrow symbols appear to the left and right of the softkeys, more than one set of
softkeys is available. Use the Nav or key to display the next set of softkeys.

18 Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012
Softkey
Name
Displayed during…
Press to…
<<
Cursor backward
Entering a SIP login or
password.
Move the cursor back one
position.
>>
Cursor forward
Entering a SIP login or
password.
Move the cursor forward in
alphanumeric mode. If the
cursor is at the end of the
line, adds a space
character.
▼▲
Softkey set
change
When there is more than
one set of softkeys are
available.
Change the softkey set to
the next set.
All
All
Transmit power settings
option list.
Enable all 802.11a sub
bands and set them to the
selected power.
Answ
Answer
Incoming call on the
selected line.
Answer the call (equivalent
to START key).
Bksp
Backspace
character
Entering a dial number.
Delete the character prior
to the cursor position.
Back
Back one screen
Displaying a menu.
Exit the menu, move back
one screen without saving.
CAPS/caps
Capitalization
Data entry
Toggle the case of the
entry.
Cfg
Config Menu
Standby mode
Open the Config menu.
Clr
Clear
Data entry
Clear the entire line.
Cncl
Cancel
Menu entry functions
Return to the previous
screen without saving.
Del
Delete
Data entry
Erase one character to the
left.
Done
Done
When selecting sub bands
Accept the selected sub
bands.
Edit
Edit
Phonebook editing
Edit the phonebook entry.
End
End Call
An active call on the
selected line.
Terminate the call without
going back to standby
mode.
Exit
Exit
Certain menus
Return to Standby mode
without saving.
Favr
Favorites
Prior to entering the first
character of a dial number.
Activate the Favorites
menu.
Fwd
Forwarding
Definition
Prior to entering the first
character of a dial number
as a call forwarding
destination.
Initiate definition of a new
call forwarding destination.
Delete a previously defined
call forwarding destination.
Hold
Hold
In an active call.
Place the call on hold. The
call status tab shows
when the call is on hold or
when audio is flowing.
Logs
Call Logs
Standby mode
Open the Call Log menu.

The Handset Display
Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012 19
Softkey
Name
Displayed during…
Press to…
More
More
Certain menus
Display additional menu
options.
Msg
Message
Initial dial screen when
new line is selected and a
dial tone is active prior to
entering first character of
the number to be dialed.
Initiate a call to the
specified message center
contact address for
retrieval or administration
of voicemail.
Mute
Toggle muting
In an active call.
Toggle audio transmission
to the far end. The call
status tab shows when
not muted or when
muted.
Nois
Noise Mode
Standby mode, second set
Cycle through the three
Noise mode options.
OK
OK
Power up registration if
username is not configured
in admin menu.
Send the username and
password to the SIP server
for authorization to register
the handset.
Phbk
Phonebook
Standby mode
Open the phonebook
menus.
Prof
Profiles
Standby mode
Display the list of Profiles.
Redl
Redial
Prior to entering the first
character of a dial number.
Redial the last number that
was dialed.
Rej
Reject
Incoming call on the
selected line.
Reject the incoming call.
The SIP server will then
redirect the call elsewhere,
such as voicemail.
Resm
Resume
In an active call and you
have placed the call on
hold, or in standby mode if
any call is on hold.
Resume a call that was
previously placed on hold
or that went on hold when
another line was activated.
Save
Save
Entering a dial number as
a call forwarding
destination.
Save the dial number as
the call forwarding
destination for the selected
line.
Spdl
Speed dial
In the Phonebook
Open the speed dial list in
order to assign a speed dial
number to the phonebook
entry.
Spkr
Speakerphone
Standby mode and in an
active call.
Activate the speakerphone.
Symb
Symbols
Entering a username or
password.
Entering the digits of a
number.
Select the set of symbols
available on the keypad
while entering data.
Tran
Transfer
In call
Initiate a transfer. Press a
second time to complete
the transfer.

20 Avaya 3641/3645 IP Wireless Handset SIP User Guide June 2012
Softkey
Name
Displayed during…
Press to…
Unlk
Unlock
Standby mode when the
keypad is locked.
Unlock the keypad.
Yes/No
Decision
Data entry
Confirm the entry before
exiting.
Nav OK Functions
The Nav OK key acts as a fifth softkey with implicit functionality as follows:
State
Nav OK key function
Dialing
Place a phone call.
Answering
Answer a phone call
Holding
Resume audio.
Displaying menu
Select the highlighted menu option.
Displaying call status
Connect audio on the currently selected call and place any previous
call on hold.
Entering login name
or login password
Save name or password and proceed with startup.
Shortcut Keys
There are two different ways to select options from a menu. You can use the Nav keys
to scroll to the option and then press Nav OK to activate it or you can press the
corresponding number key on the keypad to activate the option. If you use the number
press, you do not have to press Nav OK.
Handset Modes
Standby mode (on-hook)
In standby mode, the handset is powered on and is ready to send and receive calls. The
extension number is shown on the display and there is no dial tone. In this mode, the
handset is conserving battery power and bandwidth.
When an incoming call arrives, the handset rings and goes into active mode. Answer the
call by pressing the START key, the Answ softkey or Nav OK. The handset will ring
according to user preference as specified in the standby menus. You can silence the
ringing by pressing the END key. If you do not wish to accept the call, press the Rej
softkey. The call will be redirected to voicemail if available.