Yealink Yealink SIP-T42G User manual

1
Item
Description
①
LCD Screen
Shows information about calls, messages, soft keys,
time, date and other relevant data:
• Call information—caller ID, call duration
• Icons (for example, )
• Missed call text or second incoming caller information
• Prompt text (for example, "Saving file!")
• Date and time
②
Power Indicator LED
Indicates phone power and some feature status.
③
Line Keys
Use these keys to activate up to three accounts and
assign various features.
④
Mute Key
Toggles and indicates the 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 the hands-free speakerphone mode.
⑥
Volume Key
Adjusts the volume of the handset, headset, speaker,
and ringer.
⑦
Keypad
Provides the digits, letters, and special characters
available 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.

Overview
3
Icons appearing on the LCD screen are described in the following table:
Icon
Description
Network is unavailable
Registered successfully
Registration failed
Registering
Hands-free speakerphone mode
Handset mode
Headset mode
Voice Mail
Auto Answer
Do Not Disturb
Call Hold
Call Mute
Ringer volume is 0
Keypad Lock
Call Forward/Forwarded Calls
Missed Calls
Received Calls
Placed Calls
Recording box is full

User Guide for the SIP-T42G IP Phone
4
Icon
Description
A call cannot be recorded
Recording starts successfully
Recording cannot be started
Recording cannot be stopped

Overview
5
Power Indicator LED
LED Status
Description
Solid red
The phone is initializing.
Fast flashing red
The phone is ringing.
Slow flashing red
The phone receives a voice mail.
Off
The phone is powered off, powered on or idle.
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 BLF key)
LED Status
Description
Solid red
The monitored user is busy.
Fast flashing red
The monitored user receives an incoming call.
Off
The monitored user is idle.
The monitored user does not exist.
Line key LED (used as 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.

You can place a call in three ways using your SIP-T42G IP phone:
Using the handset
Using the speakerphone
Using the headset
You can also dial the number first, and then choose the way you want to speak to the
other party.
You can also search and dial a contact from call history, local directory or remote phone
book. For more information, refer to Contact Management on page 26 and Call History
Management on page 40.
During a call, you can alternate between Speakerphone, Headset, or Handset mode by
pressing the Speakerphone key, the Headset key, or picking up the handset.
The call duration of active calls is visible on the LCD screen. In the figure below, the call
to the number”1007”has lasted 15 seconds.
To place a call using the handset:
1. Pick up the handset.
2. Enter the desired number using the keypad.
3. Press , , or the Send soft key.
The # key is configured as a send key by default. You can also set the * key as the send
key, or set neither. For more information, refer to the
To place a call using the hands-free speakerphone mode:
Do one of the following:
-With the handset on-hook, press or the line key to obtain a dial tone.
Enter the desired number using the keypad.
Press , or the Send soft key.
-With the handset on-hook, enter the desired number using the keypad.
Press , , or the Send soft key.

Basic Call Features
65
To place a call using the headset:
Do one of the following:
-With the optional headset connected, press to activate the headset mode.
Press the line key to obtain a dial tone.
Enter the desired number using the keypad.
Press , , or the Send soft key.
-With the optional headset connected, press to activate the headset mode.
Enter the desired number using the keypad.
Press , , or the Send soft key.
To place multiple calls:
You can have more than one call on your SIP-T42G IP phone. To place a new call during
an active call, do one of the following:
-Press the line key. The active call is placed on hold.
Enter the desired number using the keypad.
Press , , or the Send soft key.
-Press the Hold soft key to place the original call on hold.
Press the NewCall soft key.
Enter the desired number using the keypad.
Press , , or the Send soft key.
You can press or to switch between the calls, and then press the Resume soft
key to retrieve the desired call.
When you are not in another call, you can answer a call in three ways:
Using the handset
Using the speakerphone
Using the headset
Note
You can ignore incoming calls by pressing the Xkey, the Reject soft key or the Silence soft
key. You can also activate Do Not Disturb mode to ignore the incoming calls without ring
on your phone. For more information, refer to Do Not Disturb (DND) on page 72.
You can forward incoming calls to someone else by pressing the Fwd soft key. For more
information, refer to Call Forward on page 74.

Answering When Not in Another Call
Call duration and destination will always appear on the LCD screen for the active call.
To answer a call using the handset:
1. Pick up the handset.
To answer a call using the hands-free speakerphone mode:
Do one of the following:
-Press .
-With the handset on-hook and the headset mode deactivated, press the Answer
soft key.
-With the handset on-hook and the headset mode deactivated, press the line key
(the line key LED flashes green).
To answer a call using the headset:
Do one of the following:
-Press .
-With the headset mode activated, press the Answer soft key.
-With the headset mode activated, press the line key (the line key LED flashes
green).
Answering When in Another Call
If you have an active call, and an incoming call arrives on the phone, do one of the
following:
-Press the Answer soft key.
The incoming call is answered and the original call is placed on hold.
-Press to access the new call.
Press or the Answer soft key.
The incoming call is answered and the original call is placed on hold.
To end a call:
Do one of the following:
-If you are using the handset, press the Cancel soft key or hang up the handset.
-If you are using the headset, press the Cancel soft key.
-If you are using the speakerphone, press or the Cancel soft key.
Note
To end a call placed on hold, you can press the Cancel soft key to end the call directly, or
press the Resume soft key to resume the call before ending it.

67
To redial the last dialed number from your phone:
1. Press twice.
A call to your last dialed number is attempted.
To redial a previously dialed number from your phone:
1. Press when the phone is idle.
2. Press or to select the desired entry from the placed calls list, and then
press or the Send soft key.
You can view the placed calls list when the phone is in the pre-dialing interface. You
should enable recent call in dialing in advance.
To enable recent call in dialing via web user interface:
1. Click on Directory->Setting.
Auto answer allows the phone to automatically answer an incoming call on the line. You
can enable auto answer on a per-line basis.
To configure auto answer via phone user interface:
1. Press Menu->Features->Auto Answer.
2. Press or , or the Switch soft key to select the desired line from the Line field.
3. Press or , or the Switch soft key to select Enable from the Status field.
4. Press the Save soft key to accept the change or the Back soft key to cancel.
The icon appears on the LCD screen.
Auto answer is configurable via web user interface at the path Account->Basic.
Note
Auto answer is only applicable when there is no other call in progress on the phone.

Basic Call Features
69
You can enable auto redial to redial the phone number automatically when the called
party is busy. You can also configure the times settings for auto redial and the time to
wait between redial attempts.
To configure auto redial via phone user interface:
1. Press Menu->Features->Auto Redial.
2. Press or , or the Switch soft key to select Enable from the Auto Redial field.
3. Enter the desired time (in seconds) in the Redial Interval field.
The default time interval is 10 seconds.
4. Enter the desired times in the Redial Times field.
The default value is 10.
5. Press the Save soft key to accept the change or the Back soft key to cancel.
Auto redial is configurable via web user interface at the path Features->General
Information.
To use auto redial:
When the called party is busy, the LCD screen prompts the following:
1. Press the OK soft key to activate auto redial.
The LCD screen prompts the following:
2. Wait for a period of time or press the OK soft key to redial the phone number.
The phone will retry as many times as configured until the called party is idle.

User Guide for the SIP-T42G IP Phone
70
You can press a call return key to place a call back to the last incoming call.
To configure a call return key via phone user interface:
1. Press Menu->Features->DSS Keys.
2. Select a desired DSS key.
3. Press or , or the Switch soft key to select Key Event from the Type field.
4. Press or , or the Switch soft key to select Call Return from the Key Event
field.
5. (Optional.) Enter a string that will appear on the LCD screen in the Label field.
6. Press the Save soft key to accept the change or the Back soft key to cancel.
Call return key is configurable via web user interface at the path DSSKey->Line Key.
You can mute the microphone of the active audio device during an active call, and then
the other party cannot hear you.
To mute a call:
1. Press during an active call.
The mute key LED illuminates solid red.
The LCD screen indicates that the call is on mute.
To un-mute a call:
1. Press again to un-mute the call.
The mute key LED goes out.

Basic Call Features
71
You can place an active call on hold. Only one active call can be in progress at any time.
Other calls can be made and received while placing the original call on hold. When you
place a call on hold, your IP PBX may play music on hold to the other party while
waiting.
To place a call on hold:
1. Press the Hold soft key during a call.
The LCD screen shows the call is on hold and the line key LED flashes green.
Note
To resume a held call:
1. Press the Resume soft key.
Multiple Calls on Hold:
If multiple calls are placed on hold, press or to switch between the calls, and
then press the Resume soft key to retrieve the desired call.
If more than two calls are placed on hold, a numbered prompt appears on the LCD
screen, for example "2/3", indicating that this is the second call out of three calls.
If multiple calls are placed on hold on more than one line key, you can view call details
by pressing the corresponding line key, and then press the Resume soft key to retrieve
the call.
The phone will beep softly every 30 seconds to remind you that you still have a call on
hold.

User Guide for the SIP-T42G IP Phone
72
You can use DND to reject incoming calls automatically on the phone. Callers will
receive a busy message.
You can enable/disable DND for the phone system, or you can customize DND for each
or all accounts. Two DND modes:
Phone (default): DND is effective for the phone system.
Custom: DND can be configured for each or all accounts
You can receive incoming calls from authorized numbers when DND is enabled.
To activate DND in phone mode:
1. Press the DND soft key when the phone is idle.
The icon on the idle screen indicates that DND is enabled.
You can transfer a call to another party in one of the three ways:
Blind Transfer: Transfer a call directly to another party without consulting.
Semi-Attended Transfer: Transfer a call when the target phone is ringing.
Attended Transfer: Transfer a call with prior consulting.
To perform a blind transfer:
1. Press the Tran soft key during a call.
2. Enter the number you want to transfer the call to.
3. Press the Tran soft key to complete the transfer.
Then the call is connected to the number to which you are transferring.
To perform a semi-attended transfer:
1. Press the Tran soft key during a call.
2. Enter the number you want to transfer the call to.
3. Press or to dial out.
4. Press the Tran soft key to complete the transfer when receiving ringback.

User Guide for the SIP-T42G IP Phone
To perform an attended transfer:
1. Press the Tran soft key during a call.
2. Enter the number you want to transfer the call to.
3. Press or to dial out.
4. After the party answers the call, press the Tran soft key to complete the transfer.
If you are using a handset, the transfer can be completed by hanging up the handset.
You can cancel the transfer before the call is connected by pressing the Cancel soft key.
You can record calls by pressing a record key on the phone. The SIP-T42G IP phone
supports record and URL record.
Two ways of call recording:
Record: The phone sends SIP INFO message containing a specific header “Record:
on/off”to trigger a recording.
URL Record: The phone sends HTTP URL request to trigger a recording. Contact your
system administrator for the predefined URL.
Note
To configure a Record key via phone user interface:
1. Press Menu->Features->DSS Keys.
2. Select the desired DSS key.
3. Press or , or the Switch soft key to select Key Event from the Type field.
4. Press or , or the Switch soft key to select Record from the Key Event field.
5. (Optional.) Enter a string that will appear on the LCD screen in the Label field.
6. Press the Save soft key to accept the change or the Back soft key to cancel.
To configure a URL Record key via phone user interface:
1. Press Menu->Features->DSS Keys.
2. Select the desired DSS key.
3. Press or , or the Switch soft key to select URL Record from the Type field.
Call record is not available on all servers. Contact your system administrator for more
information.

95
The Record/URL Record keys control the recording, and are available:
During an active call
When calls are on hold or mute
During a blind or attended transfer
During a conference call
When the phone prompts you to answer an incoming call
The Record/URL Record keys are not available when:
There are no connected calls on your phone
You place a new call
To record a call:
1. Press the Record or URL Record key during a call.
If the recording starts successfully, there cording icon will appear on the LCD screen
and the Record or URL Record key LED will flash green.
2. Press the Record or URL Record key again to stop recording.
The recording icon disappears from the LCD screen and the Record or URL Record
key LED goes out.
Recording status indications you need to know:
Circumstance
Icons on the LCD screen
A recording is started
appears on the LCD screen
A recording cannot be started
appears for 1 second
A recording cannot be
stopped
appears for 1 second, then goes back
The recording box is full
appears for 1 second
The cannot be recorded
appears for 1 second
You can listen to the recordings stored on your server system. For example, you can dial
an access code to listen to the recordings.
Note
The way in which you listen to the recordings may be different on different servers.
Contact your system administrator for more information.
4. (Optional.) Enter a string that will appear on the LCD screen in the Label field.
5. Enter the URL (e.g., http://10.1.2.224/phonerecording.cgi) in the Value field.
6. Press the Save soft key to accept the change or the Back soft key to cancel.
Record and URL Record keys are configurable via web user interface at the path
DSSKey->Line Key.

Star Codes
Automatic Call Back Deactivation
#8
Call Forwarding Always To Voice Mail Activation
*21
Call Forwarding Always To Voice Mail Deactivation
#21
Call Forwarding Busy To Voice Mail Activation
*40
Call Forwarding Busy To Voice Mail Deactivation
#40
Call Forwarding No Answer Activation
*92
Call Forwarding No Answer Deactivation
*93
Call Forwarding No Answer To Voice Mail Activation
*41
Call Forwarding No Answer To Voice Mail Deactivation
#41
Call Forwarding Not Reachable Activation
*94
Call Forwarding Not Reachable Deactivation
*95
Calling Line ID Delivery Blocking per Call
*67
Calling Line ID Delivery per Call
*65
Call Return
*69
Call Waiting Persistent Activation
*43
Call Waiting Persistent Deactivation
#43
Cancel Call Waiting
*70
Clear Voice Message Waiting Indicator
*99
Customer Originated Trace
*57
Directed Call Pickup
*97
Directed Call Pickup with Barge-in
*33
Direct Voice Mail Transfer
*55

Last Number Redial
*66
Per Call Account Code
*71
Push to Talk
*50
Speed Dial 100
*75
Speed Dial 8
*74
Phone Diverts and Pickups
Phone Divert On
* 72 press Dial and destination number
Remove Phone Divert
* 73 press Dial
Phone Divert On Busy
* 90 press Dial
Remove Divert On Busy
* 91 press Dial
Phone Divert No Answer
* 92 press Dial
Remove Divert No Answer
* 93 press Dial
Call Pick up
* 98 press Dial
DND Activate * 78 press Dial
DND De-activate * 79 press Dial
Operating Instructions
Notice 1. If the WAN (wide area network) connection fails to a site for any reason,
including a fault on the circuit or a power cut, then the ability to make and
receive calls from the IP phones utilising that WAN circuit will be restricted.
These failures may be caused for reasons outside our control. Other services
will be fully maintained including voice mail and the ability to divert calls to
other numbers including mobiles. If another working WAN circuit is available
at that site then this can be used to fully restore service to all phones.
2. This service allows for calls to 999 and 112, however these services will
be affected if there is a power cut or your WAN circuit fails
3. With regard 999 services no location information is passed to the emergency
services operator this will mean that you will have to state the address that
you wish the emergency service to attend.
4. We do not offer a paper based telephone directory service
5. If you require a PDF that allows you to print off stickers to attach to the
phone device explaining the above please contact us.