Yealink SIP-T42S IP User manual

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Copyright © 2017 YEALINK(XIAMEN) NETWORK TECHNOLOGY
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GNU GPL INFORMATION
Yealink SIP-T42S IP phone firmware contains third-party software under the GNU General Public License (GPL). Yealink
uses software under the specific terms of the GPL. Please refer to the GPL for the exact terms and conditions of the
license.
The original GPL license, source code of components licensed under GPL and used in Yealink products can be
downloaded online:
http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=293&CateId=293.

About This Guide
ix
About This Guide
Thank you for choosing the SIP-T42S IP phone, an ultra-elegant Gigabit IP phone which is
exquisitely designed to provide business telephony features, such as Call Hold, Call Transfer,
Busy Lamp Field, Multicast Paging and Conference over an IP network.
This guide provides everything you need to quickly use your new phone. First, verify with your
system administrator that the IP network is ready for phone configuration. Also be sure to read
the Packaging Contents in this guide before you set up and use the SIP-T42S IP phone.
See the Yealink Products Regulatory Notices guide for all regulatory and safety guidance.
In This Guide
Topics provided in this guide include:
Chapter 1 Overview
Chapter 2 Getting Started
Chapter 3 Customizing Your Phone
Chapter 4 Basic Call Features
Chapter 5 Advanced Phone Features
Summary of Changes
This section describes the changes to this guide for each release and guide version.
Changes for Release 81, Guide Version 81.90
The following sections are new:
Network Connection on page 19
Wireless Network Settings on page 23
Bluetooth Headset on page 65
Recording Using a USB Flash Drive on page 140
Major updates have occurred to the following sections:
Optional Accessories on page 14
Phone Installation on page 16
Volume on page 42

User Guide for SIP-T42S IP Phone
x
Changes for Release 81, Guide Version 81.70
The following section is new:
Parking a Call/Retrieving a Parked Call to the Monitored User on page 137
Major updates have occurred to the following sections:
Entering Data and Editing Fields on page 29
Configuring an Access URL on page 57
DSS Keys on page 69
Auto Answer on page 95
Do Not Disturb (DND) on page 101
Call Forward on page 105
Call Park/Retrieve on page 119
Configuring Visual and Audio Alert for BLF Pickup on page 132
Receiving RTP Stream on page 154
BLF Ring Type is moved to Configuring Visual and Audio Alert for BLF Pickup on page 132.
Changes for Release 81, Guide Version 81.20
None

Table of Contents
xi
Table of Contents
About This Guide ..........................................................................ix
In This Guide .............................................................................................................................................................ix
Summary of Changes ............................................................................................................................................ix
Changes for Release 81, Guide Version 81.90.........................................................................................ix
Changes for Release 81, Guide Version 81.70..........................................................................................x
Changes for Release 81, Guide Version 81.20..........................................................................................x
Table of Contents..........................................................................xi
Overview .........................................................................................1
Hardware Component Instructions ..................................................................................................................1
Icon Instructions.......................................................................................................................................................3
Feature Status Icons............................................................................................................................................3
Line Key Icons........................................................................................................................................................4
Other Icons.............................................................................................................................................................4
LED Instructions........................................................................................................................................................5
User Interfaces ..........................................................................................................................................................7
Phone User Interface..........................................................................................................................................8
Web User Interface..............................................................................................................................................8
Documentations.................................................................................................................................................... 11
Getting Started.............................................................................13
Packaging Contents ............................................................................................................................................. 13
Optional Accessories....................................................................................................................................... 14
Phone Installation ................................................................................................................................................. 16
Network Connection............................................................................................................................................ 19
Connecting to the Wired Network............................................................................................................. 19
Connecting to the Wireless Network........................................................................................................ 20
Phone Initialization............................................................................................................................................... 20
Phone Status........................................................................................................................................................... 21
Basic Network Settings....................................................................................................................................... 22
Wireless Network Settings ................................................................................................................................ 23
Activating the Wi-Fi Mode............................................................................................................................ 23
Connecting to the Wireless Network........................................................................................................ 24
Viewing the Wireless Network Information ........................................................................................... 27
Managing the Saved Wireless Network................................................................................................... 27

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xii
Disconnecting the Wireless Network Connection ............................................................................... 28
Deactivating the Wi-Fi Mode....................................................................................................................... 28
Registration ............................................................................................................................................................. 28
Idle Screen ............................................................................................................................................................... 29
Entering Data and Editing Fields..................................................................................................................... 29
Customizing Your Phone.............................................................33
General Settings .................................................................................................................................................... 33
Power Saving...................................................................................................................................................... 33
Backlight............................................................................................................................................................... 36
Language.............................................................................................................................................................. 37
Time & Date........................................................................................................................................................ 37
Administrator Password................................................................................................................................. 39
Key As Send ........................................................................................................................................................ 40
Phone Lock.......................................................................................................................................................... 40
Audio Settings........................................................................................................................................................ 42
Volume.................................................................................................................................................................. 42
Ring Tones........................................................................................................................................................... 43
Key Tone............................................................................................................................................................... 45
Contact Management ......................................................................................................................................... 45
Directory............................................................................................................................................................... 45
Local Directory ................................................................................................................................................... 47
Blacklist ................................................................................................................................................................. 55
Remote Phone Book........................................................................................................................................ 56
Call History Management.................................................................................................................................. 58
Viewing History Records................................................................................................................................ 58
Placing a Call from History Records .......................................................................................................... 59
Adding a Contact to the Local Directory/Blacklist............................................................................... 59
Deleting History Records............................................................................................................................... 59
Disabling History Record............................................................................................................................... 60
Search Source List in Dialing ............................................................................................................................ 60
System Customizations....................................................................................................................................... 62
Logo Customization......................................................................................................................................... 62
Headset Use........................................................................................................................................................ 63
Bluetooth Headset............................................................................................................................................ 65
DSS Keys............................................................................................................................................................... 69
Account Management .................................................................................................................................... 80
Dial Plan................................................................................................................................................................ 82
Emergency Number......................................................................................................................................... 88
Live Dialpad......................................................................................................................................................... 89
Hotline................................................................................................................................................................... 89
Basic Call Features........................................................................91

Table of Contents
xiii
Placing Calls ............................................................................................................................................................ 92
Answering Calls...................................................................................................................................................... 94
Auto Answer ....................................................................................................................................................... 95
Ending Calls............................................................................................................................................................. 95
Redialing Numbers............................................................................................................................................... 96
Recent Call In Dialing .......................................................................................................................................... 96
Auto Redial.............................................................................................................................................................. 97
Call Completion..................................................................................................................................................... 98
ReCall......................................................................................................................................................................... 99
Call Mute .................................................................................................................................................................. 99
Muting a Call ....................................................................................................................................................100
Muting While Dialing ....................................................................................................................................100
Call Hold/Resume ...............................................................................................................................................100
Do Not Disturb (DND).......................................................................................................................................101
Call Forward ..........................................................................................................................................................105
Static Forwarding............................................................................................................................................105
Dynamic Forwarding .....................................................................................................................................111
Call Transfer...........................................................................................................................................................111
Blind Transfer....................................................................................................................................................112
Semi-attended Transfer................................................................................................................................114
Attended Transfer...........................................................................................................................................114
Call Waiting ...........................................................................................................................................................115
Conference ............................................................................................................................................................116
Local Conference ............................................................................................................................................116
Network Conference......................................................................................................................................117
Call Park/Retrieve................................................................................................................................................119
FAC Mode ..........................................................................................................................................................120
Transfer Mode..................................................................................................................................................122
Call Pickup .............................................................................................................................................................124
Directed Call Pickup.......................................................................................................................................124
Group Call Pickup ...........................................................................................................................................126
Anonymous Call ..................................................................................................................................................128
Anonymous Call Rejection ..............................................................................................................................129
Advanced Phone Features.........................................................131
Busy Lamp Field (BLF)........................................................................................................................................131
Configuring the BLF Feature on the IP Phone.....................................................................................131
Using BLF Feature on the IP Phone .........................................................................................................136
BLF List ....................................................................................................................................................................138
Call Recording ......................................................................................................................................................139
Recording Using a USB Flash Drive .........................................................................................................140
Recording Using a Record Key..................................................................................................................144
Hot Desking ..........................................................................................................................................................146
Intercom .................................................................................................................................................................148

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Configuring the Intercom Feature on the IP Phone..........................................................................148
Using Intercom ................................................................................................................................................150
Multicast Paging..................................................................................................................................................151
Sending RTP Stream......................................................................................................................................151
Receiving RTP Stream ...................................................................................................................................154
Using Multicast Paging.................................................................................................................................156
Music on Hold (MoH)........................................................................................................................................157
Automatic Call Distribution (ACD) ...............................................................................................................158
Shared Call Appearance (SCA).......................................................................................................................159
Configuring SCA Feature on the IP Phone ...........................................................................................160
Using SCA Feature on the IP Phone........................................................................................................167
Bridged Line Appearance (BLA).....................................................................................................................173
Configuring BLA Feature on the IP Phone............................................................................................174
Using BLA Feature on the IP Phone.........................................................................................................176
Messages................................................................................................................................................................178
Short Message Service (SMS).....................................................................................................................178
Voice Mail ..........................................................................................................................................................180
Message Waiting Indicator (MWI) ...........................................................................................................182
Appendix.....................................................................................185
Appendix A –Time Zones................................................................................................................................185
Appendix B –Menu Structure........................................................................................................................187
Index ...........................................................................................189

Overview
1
Overview
This chapter provides the overview of the SIP-T42S IP phone. Topics include:
Hardware Component Instructions
Icon Instructions
LED Instructions
User Interfaces
Documentations
If you require additional information or assistance with your new phone, contact your system
administrator.
Hardware Component Instructions
The main hardware components of the SIP-T42S IP phone are the LCD screen and the keypad.

User Guide for the SIP-T42S IP Phone
2
Hardware component instructions of the SIP-T42S IP phone are:
Item
Description
①
LCD Screen
Shows information about calls, messages, soft keys, time,
date and other relevant data:
• Default account
• Call information—caller ID, call duration
• Icons (for example, )
• Missed call text or second incoming caller information
• Prompt text (for example, "Saving config file!")
• Time and date
②
Power Indicator LED
Indicates call status, message status and phone’s system
status.
• Receives an incoming call—Fast-flashing
• Receives a voice mail or text message—Slow-flashing
③
Line Keys
Use these keys to activate up to twelve accounts and
assign various features.
④
(Mute Key)
Toggles and indicates mute feature.
(Headset Key)
Toggles and indicates the headset mode.
(Message Key)
Accesses voice mails.
(Redial Key)
Redials a previously dialed number.
⑤
Speakerphone Key
Toggles and indicates the hands-free (speakerphone)
mode.
⑥
Volume Key
Adjusts the volume of the handset, headset, speaker or
ringer.
⑦
Keypad
Provides the digits, letters, and special characters in
context-sensitive applications.
⑧
Scroll through the displayed information.
Confirms actions or answers incoming calls.
Cancels actions or rejects incoming calls.
⑨
Soft Keys
Label automatically to identity their context-sensitive
features.
⑩
Speaker
Provides hands-free (speakerphone) audio output.
⑪
Reversible Tab
Secures the handset in the handset cradle when the IP
phone is mounted vertically. For more information on how
to adjust the reversible tab, refer to Yealink Wall Mount
Quick Installation Guide for Yealink IP Phones .
⑫
Hookswitch
• Picking up the handset from the handset cradle, the
hookswitch bounces and the phone connects to the line.
• Laying the handset down on the handset cradle, the

Overview
3
Item
Description
phone disconnects from the line.
Icon Instructions
Feature Status Icons
Icons appearing on the status bar are described in the following table:
Icons
Description
Network is unavailable
Hands-free (speakerphone) mode
Handset mode
Headset mode
Voice Mail
Auto Answer
Do Not Disturb (DND)
Ringer volume is 0
Phone Lock
Missed Calls
Call Forward
Recording starts successfully (Using a USB flash drive)
Recording is paused (Using a USB flash drive)

User Guide for the SIP-T42S IP Phone
4
Line Key Icons
Icons appearing on the line key label are described in the following tables:
Icon indicator (associated with line)
Icons
Description
The private line registers successfully
The shared/bridged line registers successfully
Registering
Register failed
DND is enabled on this line
Call forward is enabled on this line
Icon indicator (associated with ACD)
Icon
Description
The ACD state is available
and x
The ACD state is unavailable
The ACD state is Wrap up
Log out of the ACD system
Other Icons
Icons appearing when accessing features are described in the following tables:
Icon indicator (associated with call recording)
Icon
Description
Recording box is full
A call cannot be recorded

Overview
5
Icon
Description
Recording starts successfully
Recording cannot be started
Recording cannot be stopped
Icon indicator (associated with call history)
Icon
Description
Received Calls
Placed Calls
Missed Calls
Forwarded Calls
Icon indicator (associated with contact)
Icon
Description
The contact icon
LED Instructions
Power Indicator LED
LED Status
Description
Solid red
The phone is initializing.
Fast-flashing red (300ms)
The phone is ringing.
Slow-flashing red (1s)
The phone receives a text message or voice mail.
Off
The phone is powered off.
The phone is idle.
The phone is busy.
The call is placed on hold or is held.
The call is muted.

User Guide for the SIP-T42S IP Phone
6
Line key LED
LED Status
Description
Solid green
The line is seized.
The line is in conversation.
Fast-flashing green
The line receives an incoming call.
Slow-flashing green
The call is placed on hold.
Off
The line is inactive.
Line key LED (configured as a BLF key or BLF List key)
LED Status
Description
Solid green
The monitored user is idle.
Fast-flashing red (200ms)
The monitored user receives an incoming call.
Solid red
The monitored user is busy.
The monitored user’s conversation is placed on hold
(This LED status requires server support).
Slow-flashing red (1s)
The call is parked against the monitored user’s phone
number.
Off
The monitored user does not exist.
Line key LED (used as a page switch key)
LED Status
Description
Solid red
There is a parked call on the line key of the non-current
page.
Solid green
There is a call on the line key of the non-current page.
Fast-flashing green
The line receives an incoming call on the non-current
page.
Fast-flashing red
The monitored user receives an incoming call on the
non-current page.
Off
Line keys on every page are idle.
Line key LED (associated with a shared line)
The local SCA phone indicates the phone is involved in an SCA call, while the monitoring SCA
phone indicates the phone is not involved in the SCA call.
LED Status
Description
Off
The shared line is idle.
Fast-flashing green
The shared line receives an incoming call.
Solid green (for local SCA
The shared line is in conversation.

Overview
7
LED Status
Description
phone)
Solid red (for monitoring SCA
phone)
The shared line is dialing.
The shared line is seized.
The shared line conversation is barged in by the other
shared line party.
Slow-flashing green (for local
SCA phone)
Slow-flashing red (for
monitoring SCA phone)
The shared line conversation is placed on public hold.
Slow-flashing green (for local
SCA phone)
Solid red (for monitoring SCA
phone)
The shared line conversation is placed on private hold.
For a multi-party call, all the shared line parties
participating in this call place the shared line
conversation on hold.
Line key LED (associated with a bridged line)
The local BLA phone indicates the phone is involved in a BLA call, while the monitoring BLA
phone indicates the phone is not involved in the BLA call.
LED Status
Description
Off
The bridged line is idle.
Fast-flashing green
The bridged line receives an incoming call.
Solid green (for local BLA
phone)
Solid red (for monitoring BLA
phone)
The bridged line is in conversation.
The bridged line is dialing.
The bridged line is seized.
Slow-flashing green (for local
BLA phone)
Slow-flashing red (for
monitoring BLA phone)
The bridged line conversation is placed on hold.
Note
User Interfaces
Two ways to customize configurations of your SIP-T42S IP phone:
The user interface on the IP phone.
The user interface in a web browser on your PC.
The hardware components keypad and LCD screen constitute the phone user interface, which
allows the user to execute all call operation tasks and basic configuration changes directly on
The above introduces the default LED status. The statuses of the power indicator LED and BLF key
LED are configurable via web user interface. You can also customize the BLF key LED status and
BLF key behavior. For more information, contact your system administrator.

User Guide for the SIP-T42S IP Phone
8
the phone. In addition, you can use the web user interface to access all configuration settings. In
many cases, it is possible to use either the phone user interface and/or the web user interface
interchangeably. However, in some cases, it is only possible to use one or the other interface to
operate the phone and change settings.
Phone User Interface
You can customize your phone by pressing the Menu soft key to access the phone user
interface. The Advanced Settings option is only accessible to the administrator, and the default
administrator password is “admin”(case-sensitive). For more information on customizing your
phone with the available options from the phone user interface, refer to Customizing Your
Phone on page 33.
Note
Web User Interface
In addition to the phone user interface, you can also customize your phone via web user
interface. In order to access the web user interface, you need to know the IP address of your
new phone. To obtain the IP address, press the OK key on the phone when the phone is idle.
Enter the IP address (e.g., http://192.168.0.10 or 192.168.0.10 for IPv4;
http://[2005:1:1:1:215:65ff:fe64:6e0a] or [2005:1:1:1:215:65ff:fe64:6e0a] for IPv6) in the address
bar of a web browser on your PC. The default administrator user name and password are both
“admin”(case-sensitive).
Note
The options you can use to customize the IP phone via phone user interface and/or via web user
interface are listed in the following table:
Options
Phone User Interface
Web User Interface
Status
√
√
--IPv4
--MAC
--Firmware
--Network
--Phone
--Accounts
Basic Phone Settings
√
--Power Saving
x
The access to the Advanced settings of the Account or Network via web user interface may be
blocked by the web browser (e.g., Chrome, Firebox) if you have installed “Adblock Plus plugin”.
For a better understanding of the menu structure, please refer to Appendix B –Menu Structure
on page 187.

Overview
9
Options
Phone User Interface
Web User Interface
--Backlight
√
--Language
√
--Time & Date
√
--Administrator Password
√
--Key As Send
√
--Phone Lock
√
--Audio Settings
--Ring Tones
√
--Key Tone
√
--Contact Management
--Directory
x
--Local Directory
√
--Blacklist
√
--Remote Phone Book
x
--Call History Management
√
--Search Source List in Dialing
x
--Logo Customization
x
--Headset Use
√
--Bluetooth Headset
√
--DSS Keys
√
--Account Registration
√
--Dial Plan
x
--Emergency Number
x
--Live Dialpad
x
--Hotline
√
Basic Call Features
√
--Recent Call In Dialing
x
--Auto Answer
√
--Auto Redial
√
--Call Completion
√
--ReCall
√
--Do Not Disturb (DND)
√
--Call Forward
√
--Call Transfer
√
--Call Waiting
√
--Conference
x
--Call Park
√
--Call Pickup
√
--Anonymous Call
√
--Anonymous Call Rejection
√
Advanced Phone Features

User Guide for the SIP-T42S IP Phone
10
Options
Phone User Interface
Web User Interface
--Busy Lamp Field (BLF)
√
√
--BLF List
x
--Call Recording
√
--Hot Desking
√
--Intercom
√
--Multicast Paging
√
--Music on Hold
x
--Automatic Call Distribution (ACD)
x
--Shared Call Appearance (SCA)
x
--Bridged Line Appearance (BLA)
x
--Messages
√
SIP Account
√
--User Options
--Activation
√
--Label
√
--Display Name
√
--Register Name
√
--User Name
√
--Password
√
--Server Options
--SIP Server 1/2
√
--Register Port
x
--Outbound Status
√
--Outbound Proxy1/2
√
--Proxy Fallback Interval
√
--NAT Status
√
Note
The table above lists most of the feature options. Please refer to the relevant sections for more
information.