Figure 3-1: Screen in Idle State ........................................................................................................................ 17
Figure 3-2: Phone Menu ................................................................................................................................... 19
Figure 4-1: Entering Letters of the Alphabet .................................................................................................... 24
Figure 4-2: Entering a Symbol (e.g., a dot) ...................................................................................................... 25
Figure 4-3: Reverting to Letters (e.g., abc) ...................................................................................................... 25
Figure 8-14: Popup Menu ................................................................................................................................. 79
Figure 8-15: About AC BToE ............................................................................................................................ 79
Figure 8-16: TCP Port ....................................................................................................................................... 79
Figure 8-17: AC BToE TCP Port ...................................................................................................................... 80
Figure 8-18: Popup Menu ................................................................................................................................. 82
Table 3-1: Screen in Idle State ......................................................................................................................... 17
Table 3-3: Messages Displayed in the Screen Indicating Processes In Progress ........................................... 20
Table 6-1: Time Zones...................................................................................................................................... 36
Information contained in this document is believed to be accurate and reliable at the time of printing.
However, due to ongoing product improvements and revisions, AudioCodes cannot guarantee
accuracy of printed material after the Date Published nor can it accept responsibility for errors or
omissions. Updates to this document and other documents can be viewed by registered customers at
This document is subject to change without notice.
Date Published: June-26-2017
Trademarks
AudioCodes Ltd. All rights reserved. AudioCodes, AC, HD VoIP, HD VoIP Sounds Better,
IPmedia, Mediant, MediaPack, What’s Inside Matters, OSN, SmartTAP, VMAS, VoIPerfect,
VoIPerfectHD, Your Gateway To VoIP, 3GX, VocaNom, AudioCodes One Voice and CloudBond
are trademarks or registered trademarks of AudioCodes Limited All other products or trademarks
are property of their respective owners. Product specifications are subject to change without
notice.
WEEE EU Directive
Pursuant to the WEEE EU Directive, electronic and electrical waste must not be disposed of with
unsorted waste. Please contact your local recycling authority for disposal of this product.
Customer Support
Customer technical support and services are provided by AudioCodes or by an authorized
AudioCodes Service Partner. For more information on how to buy technical support for
AudioCodes products and for contact information, please visit our Web site at
www.audiocodes.com/support.
Abbreviations and Terminology
Each abbreviation, unless widely used, is spelled out in full when first used.
Documentation Feedback
AudioCodes continually strives to produce high quality documentation. If you have any comments
(suggestions or errors) regarding this document, please fill out the Documentation Feedback form
on our Web site at http://www.audiocodes.com/downloads. Your valuable feedback is highly
appreciated.
Version 3.0.1 7 420HD IP Phone for Microsoft Skype for Business
420HD IP Phone for Microsoft Skype for Business
Related Documentation
Document Name
400HD Series IP Phone for Microsoft Skype for Business Release Notes
400HD Series IP Phone for Microsoft Skype for Business Administrator’s Manual
420HD IP Phone for Microsoft Skype for Business Quick Guide
400HD Series IP Phones for Skype for Windows Hosting Partner (LHPv2) Environment Configuration Note
User's Manual 8 Document #: LTRT-11910
User's Manual 1. Introducing the 420HD IP Phone
1 Introducing the 420HD IP Phone
AudioCodes' 420HD IP Phone is based on AudioCodes High Definition voice technology,
providing clarity and a rich audio experience in Voice-over-IP (VoIP) calls. The 420HD is a 1-line
2 concurrent calls per line premium model which includes a large monochrome multi-language
graphic liquid crystal display (LCD).
The 420HD IP Phone is a fully-featured telephone that provides voice communication over an IP
network, allowing you to place and receive phone calls, put calls on hold, transfer calls, make
conference calls, etc.
Read this User’s Manual carefully to learn how to operate this product and take advantage of its
rich feature set.
1.1 About AudioCodes' Series of High Definition IP Phones
AudioCodes Series of High Definition IP Phones offers a new dimension of voice call quality and
clarity for the IP Telephony market. This new series of IP Phones further expands AudioCodes’
VoIP product offering for the service providers’ hosted services, Enterprise IP telephony and
Enterprise contact centers markets. As a natural addition to the AudioCodes Mobile Clients,
Media Gateway, Media Server & Multi-Service Business Gateway products, the AudioCodes
Series of High Definition IP Phones enable Systems Integrators and end-customers to build endto-end solutions that rely on AudioCodes’ technological advantage and proven track record in
providing state-of-the-art products. The AudioCodes Series of High Definition IP Phones meet a
growing demand for High Definition VoIP solutions in end-user phones and terminals, improving
the productivity and efficiency of business communications with new quality standards set by the
High Definition voice technology.
1.2 Cutting Edge Voice Quality & HD VoIP
Based on AudioCodes’ advanced, robust and field-proven VoIPerfectHD™ software,
AudioCodes’ IP Phones are designed to utilize the most popular wideband coders. The phones
feature enhanced proprietary capabilities such as packet loss concealment, high quality wideband
acoustic echo canceler, and low-delay adaptive jitter buffers to enrich the HDVoIP experience.
Version 3.0.1 9 420HD IP Phone for Microsoft Skype for Business
420HD IP Phone for Microsoft Skype for Business
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User's Manual 10 Document #: LTRT-11910
User's Manual 2. Setting up the Phone
2 Setting up the Phone
2.1 Unpacking
When unpacking, ensure that the following items are present and undamaged:
420HD IP Phone / Stand Handset / Cord
Cat 5e Ethernet Cable AC Power Adapter (Optional)
If anything appears to be missing or broken, contact the distributor from whom you purchased the
phone for assistance.
2.2 Device Description
Use the graphics below to identify and familiarize yourself with the device's hardware functions.
2.2.1 Front View
The front view of the phone is shown in Figure 2-1 and described in Table 2-1.
Version 3.0.1 11 420HD IP Phone for Microsoft Skype for Business
Interactive screen displaying calling information, enabling you to set up
phone features.
3 Softkeys
See Section 3.2 on page 18 for details on the four softkeys and the
available functions they offer.
4
Navigation
Control / OK
Press the upper rim to scroll up menus/items. Press its lower rim to scroll
down. Press its left or right rim to move the cursor left or right (when
editing a contact number for example). Press the OK button to select a
menu/item/option.
Retrieves voice mail messages.
6 CONTACTS
Press to directly access the Personal directory and Corporate directory.
User's Manual 12 Document #: LTRT-11910
User's Manual 2. Setting up the Phone
8
REDIAL
Accesses a list of recently dialed numbers; one can be selected to redial.
9
TRANSFER
Transfers a call.
10
HOLD
Places an active call on hold.
11
Alphanumerical
Keypad
Keys for entering numbers, alphabetical letters and symbols (e.g., colons)
12
Microphone
Activates the speaker, allowing a hands-free conversation.
13
SPEAKER
Allows talking and listening. Network administrators can disable it if
required.
14
HEADSET
Activates a call using an external headset.
15
MUTE
Mutes a call.
▲VOL
▼VOL
2 4 3
1
1
2
3 4 5
5
Item # Label/Name Description
16
17 x
2.2.2 Rear View
The rear view of the phone is shown in the figure below and described in the table below.
Increases or decreases the volume of the handset, headset, speaker, ring
tone and call progress tones.
Cancel an action, such as dialing a number, after beginning it.
Figure 2-2: Rear View
Table 2-2: Rear View Description
# Label Description
Version 3.0.1 13 420HD IP Phone for Microsoft Skype for Business
Handset jack, i.e., RJ-9 port, to connect the handset.
RJ-45 port to connect to the Ethernet LAN cable for the LAN connection
(uplink – 10/100 Mbps). If you're using Power over Ethernet (PoE), power
to the phone is supplied from the Ethernet cable (draws power from either
a spare line or signal line).
RJ-45 port for connecting the phone to a PC (10/100 Mbps downlink).
12V DC power jack that connects to the AC power adapter.
Headset jack, i.e., RJ-9 port that connects to an external headset.
2.3 Cabling
1 2 3 4 5
1
2 3 4
5
This section shows how to cable your phone.
420HD IP Phone for Microsoft Skype for Business
Figure 2-3: Cabling
Action Description
Connect the short, straight end of the cord to the handset.
Connect the longer, straight end to the jack (RJ-9 port, for the handset) on the phone.
Connect the RJ-45 LAN port to your LAN network (LAN port or LAN switch/router), using a
CAT 5 / 5e Ethernet cable
Connect the RJ-9 headset jack to a headset (optional)
Connect the RJ-45 PC port to a computer, using a CAT 5 / 5e straight-through Ethernet
cable
Connect the connector tip of the AC power adapter to the phone’s power socket (labelled DC
12V). Connect the two-prong AC adapter directly to the electrical wall outlet. When the
phone powers up, all the LEDs momentarily light up
Note: If the LAN to which the phone is connected supports Power over Ethernet (PoE), no
AC adapter is required; the phone receives power from the Ethernet network.
Prior to connecting power, refer to the Compliancy and Regulatory Information at
www.audiocodes.com/library.
User's Manual 14 Document #: LTRT-11910
User's Manual 2. Setting up the Phone
2.4 Mounting the Phone
The phone can be mounted on a:
Desk (see Section 2.4.1 below) Wall (see Section2.4.2 on page 16)
See also https://www.youtube.com/watch?v=oGe9STB9lFE to assemble the base stand.
2.4.1 Mounting the Phone on a Desktop
This section shows how to place the phone on a desk or flat surface.
To mount the phone on a desk or flat surface:
1. Off-hook the handset (if on-hook) and place the phone upside down, i.e., base-up, on your
desktop.
2. On the phone's base, identify outer rails.
3. On the phone's stand, identify outer notches.
4. Invert the stand and align its outer notches with the base's outer rails.
5. Insert the stand's outer notches into the base's outer rails and slide the notches along the
rails until the stand click-locks into the base.
6. Revert the phone and stand it on the desktop.
2.4.1.1 Routing the Handset Cable
The phone features a groove for routing the handset cable.
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420HD IP Phone for Microsoft Skype for Business
2.4.2 Mounting the Phone on a Wall
This section shows you how to mount the phone on a wall or wall plate.
To mount the phone on a wall:
1. Attach the stand of the phone for the purpose of a wall mounting:
a. Detach the base.
To detach the phone's stand, push this button
b. Attach it again as you did for a desktop mounting (see Section 2.4.1 on page 15) only
now make sure that it's flatly aligned to lie flush against the wall, i.e., slide the middle rails of the phone stand onto the phone base's inner notches.
2. Connect the AC power adapter, LAN and PC cords.
3. In the wall, drill two horizontal holes at a distance of 3 15/16 inches (100 mm) from one
another, in line with the template.
4. Insert two masonry anchors into the holes if necessary.
5. Thread two screws (not supplied) into the two masonary anchors; ensure that the heads
extend sufficiently (about 3/16 inch or 5 mm from the wall) for the phone stand's keyhole
slots to hang on.
6. Hang the phone stand's keyhole slots on these screws.
User's Manual 16 Document #: LTRT-11910
User's Manual 3. Getting Started
1
2 4 3
3 Getting Started
This section gets you started with the phone. The phone features a screen, providing an intuitive,
menu-driven user interface for configuring the device and viewing call information.
Before using the phone, you must sign in (see Section 4 on page 21).
3.1 Getting Acquainted with the Phone's Screen
This section gets you acquainted with the phone's screen.
The figure below shows the screen in idle state.
Figure 3-1: Screen in Idle State
Reference:
Table 3-1: Screen in Idle State
Reference Description
1
2
3
4
Displayed Name (configured by your network administrator); see the Administrator's
Manual.
Shows presence status (Available, Busy, Do not disturb, Away, or Be right back).
See Section 6.17 on page 51 for details.
Softkeys; to activate, press the key on the device, below the screen, corresponding to the
softkey. See Table 3-2 for softkey descriptions.
Day, Date and Time (automatically retrieved from the Network Time Protocol (NTP) server,
enabled by your network administrator).
Version 3.0.1 17 420HD IP Phone for Microsoft Skype for Business
3.2 Softkeys
/Sign out
Sign out
Status
directory
Personal directory
Select
A/a/1
Save
URL
Detail
Displayed after selecting a call log (for example). If selected, the details of a logged call are
Detail
Call Log
End
Dial
Edit
Silent
Reject
Displayed when the phone rings, alerting to an incoming call. Lets you reject the call.
Accept
The table below shows the softkeys displayed in screen menus. To use a softkey, press the key
located directly below it on the device.
SoftkeyDescription
420HD IP Phone for Microsoft Skype for Business
Table 3-2: Softkeys
Missed
Forward
Status
Sign in
BToE
Cancel
Dial
Clear
Conf
BXfer
Displays missed calls.
Automatically forwards calls.
Displayed in idle state. Lets you set presence status: Available, Busy, Do not disturb, Away,
Be right back, Reset
Sign in is displayed if you haven't signed in yet, in the idle screen.
is displayed if you press the
Displayed after lifting the handset (for example). Lets you select a contact from the Corporate
or
Displayed after lifting the handset (for example). Displays the Call Log.
Identical to the hard OK key on the phone. Either can be used. Selects a menu or option.
Displayed after pressing the MENU hard key. Generates a code for manually pairing the
phone with Skype for Business client, for unified communications.
Enables switching between input modes: abc, ABC, Abc, 123, or T9.
Saves settings.
Cancels the currently initiated call or configuration.
Displayed after a number is keyed, a directory contact is selected, or a logged call is selected.
Dials the phone number / directory contact / logged call.
Displayed (for example) after entering a digit of a phone number. Deletes from right to left.
Displayed after a number is dialed and answered on the other side, and after you answer a
call. Displays the Call Menu.
Displayed (1) after a number is dialed and the call is answered on the other side and (2) after
you answer a call. Pressing it displays the ADD PARTICIPANT screen.
Displayed (1) after a number is dialed and the call is answered on the other side and (2) after
a call is answered. Lets you transfer the call in a blind transfer.
Displayed after lifting the handset (for example). Enables calling a URL.
.
softkey after signing in.
displayed (Time, Date, etc.).
Displayed after selecting a
Displayed after pressing the
Back
Start
Delete
User's Manual 18 Document #: LTRT-11910
Displayed after pressing the MENU key (for example). Returns to the previous screen.
Displayed after pressing Forward > Forward to a number (for example).
Displayed after you select a contact to be edited (for example).
Displayed after pressing the MENU key on the phone and then selecting Call Log (for
example).
Displayed when the phone rings on an incoming call. Lets you silence the ring.
Displayed when the phone rings, alerting to an incoming call. Lets you accept the call.
(for example). Displays the log details (Time, Date, etc.).
softkey (for example). Ends the call.
User's Manual 3. Getting Started
3.3 Navigating the Phone Menu
The MENU key on the phone lets you access information and configure settings shown in the
figure below. Press it to view call logs, access directories, configure speed dials, customize
phone settings, determine device status, perform administration and perform log upload to
Microsoft server.
Figure 3-2: Phone Menu
Note: Administration is intended for network administrators only. It is password protected.
See the Administrator’s Manual for details.
Version 3.0.1 19 420HD IP Phone for Microsoft Skype for Business
420HD IP Phone for Microsoft Skype for Business
To access the phone's menu:
Press the MENU key located on the device.
To navigate to menu items:
After opening the menu, press the navigation control's lower rim -OR- press the menu item's
number, e.g., press 3 to navigate to Speed Dial.
To select a menu or menu item:
Press the Select softkey or press the navigation control's OK button.
To cancel and move to a previous menu level:
Press the Back softkey.
3.4 Displayed Messages
Messages displayed in the screen indicating processes in progress include:
Table 3-3: Messages Displayed in the Screen Indicating Processes In Progress
Message Description
Initializing Initializing
Discovering LLDP Discovering VLAN using Link Layer Discovery Protocol (LLDP)
Discovering CDP Discovering VLAN using Cisco Discovery Protocol (CDP) )
Acquiring IP Acquiring an IP address from a DHCP server
Initializing Network Initializing the network
Signing in Signing in to the Skype for Windows server
Signing in...Contacting time server Get the time from the NTP server
Discovering Lync server Auto discovering the Skype for Windows server on the network
Registering Registering to a SIP proxy server (after booting up the phone)
Downloading Firmware File Downloading a firmware file
Upgrading Firmware Upgrading the phone’s firmware
Signing out Signing out of the Skype for Windows server
User's Manual 20 Document #: LTRT-11910
User's Manual 4. Signing In
4 Signing In
This section shows you how to sign in to the phone.
To sign in to the phone:
In the idle screen, press the Sign in softkey; the sign-in options are displayed:
PIN code - see Section 4.1User name and Password - see Section 4.2Web Sign-in - see Section 4.3
Note:
•After signing out, the next time you sign in the phone will present the option that was used
to sign in before signing out.
•If a user signs out and another signs in, the phone presents empty Speed Dials and empty
Call Logs to the newly signed-in user. The Speed Dials and Call Logs of the signed-out
user are not saved on the phone.
4.1 Signing in with PIN Code
This section shows how to sign in with the PIN code and phone number. The PIN code is
provided by your network administrator.
To sign in with the PIN code:
1. In the 'Sign-in options' screen shown above, select the PIN Code option.
2. Enter your phone number.
3. Navigate down and enter your PIN code (obtainable from the network administrator).
To switch from numbers to alphabetical letters and symbols, see Section 4.4.
4. Navigate down with the lower rim of the navigation control button, and then enter your PIN
code. You can get it from your administrator. To switch from numbers to alphabetical letters
and symbols, see the next section.
5. Press the Sign-in softkey; the phone is signed in and the New Device Lock Code is
displayed.
6. Enter the New Device Lock Code as shown on the next page. See Section 5 for more
information.
Version 3.0.1 21 420HD IP Phone for Microsoft Skype for Business
420HD IP Phone for Microsoft Skype for Business
7. Press the Next softkey.
8. Confirm the Lock Code.
9. Press the Save softkey; the idle screen opens.
You've successfully signed in.
4.2 Signing in with User Name and Password
This section shows how to sign in with User Name and Password.
To sign in with User Name and Password:
1. In the 'Sign-in options' screen, select User name and Password.
Note: Signing in with a username that is a NetBIOS Domain Name, i.e., domain\username,
or with the PIN Code, are disallowed for Skype for Business online sign-in. They are only
allowed for on-premises sign-in. Online sign-in must be in the following format:
•Sign-in address, i.e., SIP URI. To switch from letters of the alphabet to symbols such as
@, - and period, see Section 4.4.
•User name, in UPN (User Principal Name) format, i.e., the way the user's name appears in
their e-mail address listed in the Active Directory: username@domain.com
•User’s network IT password (the same password you use to access your PC)
2. Press the Sign in softkey; after signing in successfully, the New Device Lock Code screen
opens. See under the previous section – Signing in with PIN Code – for instructions about
the New Device Lock Code screen, and under Section 5.
User's Manual 22 Document #: LTRT-11910
User's Manual 4. Signing In
4.3 Signing in with the Cloud PBX Web Option
This section shows how to sign in with the Cloud PBX Web option, a.k.a. Device Pairing. Signing
in with this option enables connectivity to Microsoft's Cloud PBX, Microsoft's cloud-hosted version
of enterprise voice.
Note: Applies only to Microsoft Cloud PBX users using the 420HD phone.
The option exempts users from having to laboriously key in their user name and password
using the phone keypad. If the option is selected, a URL and a Pairing Code are displayed:
Users must then point their browser to the URL and enter the Pairing Code in the Microsoft web
page. Sign-in to Microsoft's Cloud PBX is then performed.
Version 3.0.1 23 420HD IP Phone for Microsoft Skype for Business
420HD IP Phone for Microsoft Skype for Business
4.4 Switching from Letters to Numbers/Symbols
You can use the keypad to enter letters of the alphabet, numbers or symbols, and to switch from
one to the other.
To enter letters of the alphabet/numbers:
1. Press the A/a/1 softkey repeatedly or the # key on the keypad repeatedly to navigate to:
• abc = lower case letters -OR-
• ABC = upper-case letters -OR-
• Abc =first-letter upper case, the rest lower case -OR-
• 123 = numbers
Figure 4-1: Entering Letters of the Alphabet
2. Select abc; the selection is displayed (see the figure above). Press the MNO key (for
example) on the keypad; m is entered. Press the GHI key three successive times (pressing it
once produces g, twice produces h); i is entered (see the figure above). Enter k and e.
To enter a symbol (e.g., dot or @ or hyphen):
1. If you're not in lower case alphabetical mode, press the A/a/1 softkey and navigate to abc
(mandatory). You can also access the mode menu by pressing the # key on the keypad –
press the # key successively to navigate in the menu.
2. Press the 1 key on the keypad; a dot is entered. Immediately press the 1 key again; a
backslash is entered. Pressing successively produces:
Symbol Explanation Symbol Explanation
. Dot * Star sign
\ Backslash = Equal sign
@ At | Separator
; Semi-colon ( Open parenthesis
: Colon ) Close parenthesis
# Pound { Open parenthesis
$ Dollar } Close parenthesis
% Percentage [ Open square parenthesis
^ Caret ] Close square parenthesis
& Ampersand " Double quotation marks
! Exclamation mark ' Single quotation mark
? Question mark > Greater than
+ Plus < Less than
- Hyphen , Comma
_ Underscore / Forward slash
~ Approximates
User's Manual 24 Document #: LTRT-11910
User's Manual 4. Signing In
online sign-in. They are only allowed for on-premises sign-in.
Figure 4-2: Entering a Symbol (e.g., a dot)
To revert to letters (e.g., abc):
Press the A/a/1 softkey (or the # key on the keypad) and navigate to abc mode.
Figure 4-3: Reverting to Letters (e.g., abc)
4.5 Online Sign-in through Microsoft's Cloud PBX
The phones feature online sign-in and connectivity to Office 365 server on Microsoft's cloud.
Users can sign in to/connect to and authenticate with Microsoft's Cloud PBX, Microsoft's cloudhosted version of enterprise voice. Two sign-in method options allow users to connect to
Microsoft's Cloud PBX:
ADAL (Azure AD Authentication Library), based on OAuth 2.0 (RFC 6749). OrgID (Organizational ID) or LiveID, Microsoft's proprietary connectivity to Cloud services.
Note: Online sign-in to the phone must be in the following format:
• Sign-in address
• Username in UPN (User Principal Name) format. UPN format is the way the user's name
appears in their e-mail address listed in the Active Directory, i.e.,
username@domain.com
•User’s network IT password
Signing in with a username that is a NetBIOS Domain Name, i.e., domain\username, as well
as signing in with the phone Extension and PIN Code, are disallowed for Skype for Business
Version 3.0.1 25 420HD IP Phone for Microsoft Skype for Business
420HD IP Phone for Microsoft Skype for Business
4.6 Signing Out
This section shows you how to sign out.
To sign out:
1. In the idle screen, press the Status softkey.
2. In the Status screen press the Sign out softkey.
You're now signed out. You're returned to the idle screen displaying the Sign in softkey.
Note: If a user signs out and another signs in, the phone presents empty Speed Dials and
empty Call Logs to the newly signed in user. The Speed Dials and Call Logs of the signed out
user are not saved on the phone.
4.6.1 Signing out if the 'Sign out' Softkey is Removed from the Screen
Located in lobbies, cafeterias, employee lounges, meeting rooms, and other gathering places,
Common Area phones typically do not display a Sign out softkey in the idle screen, in line with
network management's decision to remove the capability from users. Users can sign out, if
necessary, using the Web interface.
To sign out using the Web interface:
1. Obtain the Common Area phone's IP address (MENU key > Status > Network Status > IP
Address) and point your Web browser to it; the phone's Web interface login page opens.
Figure 4-4: Login
2. Enter the login credentials (default user name is admin and default password is 1234); the
Home page of the Web interface is displayed.
User's Manual 26 Document #: LTRT-11910
User's Manual 4. Signing In
Figure 4-5: Web Interface – Home Page
3. In the Web interface, open the Sign-In page (Configuration tab > Lync sign in > Sign in).
Figure 4-6: Sign-in – Content Blocked
4. Click the open it link and then click Show content.
Version 3.0.1 27 420HD IP Phone for Microsoft Skype for Business
420HD IP Phone for Microsoft Skype for Business
Figure 4-7: Sign-in – Windows Security Prompt
5. Click the Continue to this website (not recommended) link.
Figure 4-8: Windows Security Prompt
6. In the Windows Security prompt, enter the username and password and then click OK.
Figure 4-9: Sign-out
7. Click the Sign out button.
User's Manual 28 Document #: LTRT-11910
User's Manual 5. Unlocking a Locked Phone
5 Unlocking a Locked Phone
Note: For the automatic locking feature to be available to users, the administrator must first
enable it in the Skype for Business server and Web interface. See the Administrator's Manual
for details.
The phone supports the capability to automatically lock after a configured period of time. The
feature secures phones against unwanted (mis)use. If left untouched for 10 minutes (default), the
phone automatically locks and is inaccessible to anyone who doesn't know its lock code.
After a phone locks:
Incoming calls are allowed, but outgoing calls need the lock code. Without the lock code, users cannot access the Call Log, Calendar and Corporate Directory,
but they can call preconfigured emergency numbers.
When signing in for the first time, the user is prompted for a lock code. After entering a code, e.g.,
123456, confirming it, and saving it, the phone goes into idle state, and after 10 minutes it is
automatically locked.
To manually change the lock code:
1. Press the MENU key, select Settings and then scroll down to select Device Security.
2. In the Device Security screen that opens, select Change Lock Code, enter the old code and
press the OK softkey.
3. Enter the new code, press the Next softkey, confirm, and then press the Save softkey.
To locally unlock a phone:
1. In the idle screen, press the Unlock softkey.
2. In the Enter Lock Code screen, enter the code and press the OK softkey; the phone
unlocks.
To manually lock a phone at any time you choose:
[When the phone is in idle mode] Press the Status softkey and then press the Lock softkey
that is displayed; the phone locks, and an Unlock softkey is displayed in the idle screen.
Version 3.0.1 29 420HD IP Phone for Microsoft Skype for Business
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