Why is the screen blank?..................................................................................................................65
Why does the device display “Network unavailable”?.......................................................................65
Why does the device display time and date incorrectly?.................................................................. 66
How can I obtain the MAC address of a device when the device is not powered on?...................... 66
Why can't I receive calls?................................................................................................................. 66
Why doesn't my handset work?........................................................................................................ 66
Checking the IP Address of Device..................................................................................................66
About This Guide
Thank you for choosing Yealink T55A Teams phone, which is mainly designed to work with the Microsoft
Teams client. This guide provides everything you need to quickly use your new device. Firstly, verify with
your system administrator that the IP network is ready for device configuration. Also, be sure to read the
Quick Start Guide in the product package.
•Related Documentations
Related Documentations
You can find the following types of documents from each product support page on Yealink Support:
•Release Notes: This guide describes what’s new for a new device firmware.
•Quick Start Guide: This guide describes the contents of your package, how to assemble the device or
accessory, and how to use the basic features. This guide is also included in your device package.
•Administrator Guide: This guide provides detailed information about setting up your network and
configuring features.
•Regulatory Notice: This guide provides information for all regulatory and safety guidance.
| About This Guide | 6
Getting Started
This chapter aims to make you familiar with the phone user interface.
Note: As you read this guide, keep in mind that some features are configurable by your system
administrator or determined by your device environment. As a result, some features may not be
enabled or may be operated differently on your device. Additionally, the examples and graphics in
this guide may not directly reflect what is displayed or is available on your device.
•Hardware of T55A
•Power LED Indicator
•Accessing Screens on Yealink Teams Phones
•Entering Data and Editing Fields
Hardware of T55A
| Getting Started | 7
ItemDescription
1Power LED IndicatorIndicates call statuses:
• When receiving an incoming call, it fast flashes.
• When receiving a voice message, it slowly flashes.
2Touch Screen4.3 inches (480 x 272) capacitive touch screen, tap to select items and
navigate menus.
3HEADSET KeyToggles the headset on or off. The LED indicator glows green when the
headset is activated.
4MUTE KeyToggles the microphone on or off. The LED indicator glows red when the
mute feature is activated.
5Speakerphone KeyToggles the speakerphone (hands-free) mode or not. The LED indicator
glows green when the speakerphone is activated.
6Volume KeyAdjust the volume of the handset, headset, speaker, ringer, or media.
7MESSAGE KeyAccesses your voice messages.
8SpeakerYou can hear the voice from the speaker when you choose hand-free
phone.
9Keypad KeysEnable you to enter numbers, letters, and special characters.
10USB2.0 PortComes ready for the future connection of an optional USB flash drive.
Power LED Indicator
LED StatusDescription
RedThe phone is initializing.
Fast-flashing red (300ms)The phone is ringing.
Slowly-flashing red (1s)The phone receives a voicemail or misses a call.
Note: The above introduces the default LED status. Your system administrator can configure the
status of the power LED indicator.
Accessing Screens on Yealink Teams Phones
You can navigate the menu bar at the bottom of the touch screen to access the following screens easily.
•Accessing the Calls Screen
•Accessing the Calendar Screen
•Accessing the Voicemail Screen
| Getting Started | 8
Accessing the Calls Screen
The Calls screen is displayed after the phone startup. You can place a call from the history entry or view
the favorites information from the Calls screen.
| Getting Started | 9
NO.NameDescription
1
2
3
4
Favorites & Call
History
Favorites: Displays favorite contacts.
Call History: Displays recent calls.
Tap to retrieve a parked call.
Tap to search for a contact.
Tap to initiate a call.
Accessing the Calendar Screen
You can access the Calendar screen to join or schedule meetings.
1. Tap Calendar.
| Getting Started | 10
NO.NameDescription
1Scheduled meeting listDisplays all the scheduled on the Teams phone,
from Teams client or Outlook.
2Tap to join the corresponding scheduled meeting.
3Tap to schedule a meeting.
4Meeting detailsTap the corresponding scheduled meeting to view
the meeting details.
Accessing the Voicemail Screen
You can listen to voicemails or place calls to contacts from the Voicemail screen.
1. Tap Voicemail.
| Getting Started | 11
NO.NameDescription
1Voicemail listDisplays all the voicemails stored in the voicemail
list.
2Tap to play the voicemail.
3Tap to change the playback speed of the
voicemail.
4Operation options
5Contact details
•
Tap to view information of contact.
•
Tap to call the contact.
•
Tap to delete the voicemail.
Displays the contact details and tap to place a
call.
Entering Data and Editing Fields
•Using the On-screen Keyboard
•Using the On-screen Dial Pad
•Using the Phone Keypad
Using the On-screen Keyboard
Before using the on-screen keyboard to enter data, you need to know the function of the keys on the onscreen keyboard. The Teams phone supports the Android Keyboard (AOSP)- English (US) input method.
NO.ItemDescription
| Getting Started | 12
126 English Letters
2Delete Key
3Label automatically to
identify the contextsensitive features.
4Two Special Characters
5Space KeyTap to enter spaces.
6Input MethodTap to switch between input modes.
7Tap to switch between the uppercase input mode and lower case.
•Tap to enter letters.
•Long tap a key then slide to choose one of the options to enter an
alternate character.
•Tap to delete the entered characters one by one.
•Long tap to delete two or more characters.
Next KeyTap to go to the next field.
Done KeyTap to confirm the settings.
Go KeyTap to search for the contact.
Tap to start a new line.
•Tap to enter special characters.
•Long tap point key (.) then slide to choose one of the options to
enter an alternate character.
| Signing into Microsoft Teams and Locking Your Phone | 13
Using the On-screen Dial Pad
Instead of using the on-screen keyboard, you can also use the dial pad on the dialing screen to enter data.
The on-screen dial pad only provides digit keys and the following special characters: * # , + ;.
Procedure
1. Do one of the following:
•Pick up the handset.
•Press the Speakerphone key.
•Press the HEADSET key.
•
Tap on the Calls screen and then tap .
2. Use the on-screen dial pad to enter numbers.
Using the Phone Keypad
Instead of using the on-screen keyboard, you can also use the phone keypad to enter data. The phone
keypad only provides digit keys and the following special characters: * # , + ;.
Procedure
Press digit keys, pound key and star key on the phone or long press the pound key or star key to provide
more characters.
Signing into Microsoft Teams and Locking Your Phone
You can sign into the device with your Microsoft online account and use phone lock feature when
necessary.
•Signing into Your Device
•Signing out of Your Teams Device
•Phone Lock
•Using a Teams Phone as a Common Area Phone
•Signing into a Teams Phone as a Guest User
Signing into Your Device
You can sign into your Microsoft online account directly on your device or sign into your device via a web
sign-in, which includes your sign-in address and password.
About this task
Contact your system administrator to get your sign-in account.
Note: If your system administrator enables the device management feature, the phone supports
synchronizing account registration status to YDMP/YMCS.
•Signing into Microsoft Teams on Your Device
•Signing into Microsoft Teams via Web Sign-in
Signing into Microsoft Teams on Your Device
Procedure
1. Tap Sign in.
| Signing into Microsoft Teams and Locking Your Phone | 14
You will be connected to the Company Portal automatically.
2. Enter your user credentials.
3. After the device signs in successfully, tap Got it.
Signing into Microsoft Teams via Web Sign-in
Procedure
1. Tap Sign in.
| Signing into Microsoft Teams and Locking Your Phone | 15
You will be connected to the Company Portal automatically.
| Signing into Microsoft Teams and Locking Your Phone | 16
2. Tap Sign in from another device from the Sign in screen.
3. Go to https://microsoft.com/devicelogin on your computer.
4. Enter the code shown on your device and select Next.
5. Enter your user credentials or select the desired account to sign in.
A confirmation message is displayed after you successfully sign into Microsoft Intune Company Portal.
Signing out of Your Teams Device
After you sign out of your account, you can only use the phone settings feature.
Procedure
1.
Go to > Settings > Sign out.
2. Select OK.
Phone Lock
When the phone is not used, you can enable the phone lock to prevent unauthorized users from viewing
or modifying phone information, such as your scheduled meetings. When the phone is locked, you can
still answer the incoming call. If the administrator forcibly enables the phone lock feature on the Microsoft
Teams & Skype for Business Admin Center, you cannot disable it on the phone. For more information,
contact your system administrator.
Note: The phone lock feature is not available to Common Area Phones.
•Creating a Lock PIN
•Enabling Phone Lock
•Setting the Idle Timeout for Phone Lock
•Unlocking Your Phone
•Changing Your Lock PIN
•Disabling Phone Lock
| Signing into Microsoft Teams and Locking Your Phone | 17
Creating a Lock PIN
If your administrator sets security restrictions and enables the phone lock for you, you are prompted to set
up a lock PIN, which is used for unlocking your phone.
Procedure
1. Tap OK to create a lock PIN on the pop-up menu.
2. Enter the lock PIN in the New PIN field.
3. Enter the lock PIN again in the Confirm PIN field.
4. Tap OK.
Enabling Phone Lock
Procedure
1.
Go to > Settings > Device Settings > Phone Lock.
2. Enable Lock Enable.
3. Enter the lock PIN in the New PIN field.
4. Enter the lock PIN again in the Confirm PIN field.
You can use your lock PIN to unlock your phone.
5. Save the change.
Setting the Idle Timeout for Phone Lock
You can configure the idle timeout, after which the phone will be locked automatically.
Procedure
1.
Go to > Settings > Device Settings > Phone Lock.
2. Enter the unlock PIN and tap Unlock.
3. Tap the Idle time-out field and then select the desired value.
4. Save the change.
Unlocking Your Phone
Procedure
1.
Tap on the touch screen.
2. Enter the unlock PIN.
Note: You will be forced to sign out after five unsuccessful unlock attempts.
| Signing into Microsoft Teams and Locking Your Phone | 18
Changing Your Lock PIN
You can change your lock PIN at any time.
Procedure
1.
Go to > Settings > Device Settings > Phone Lock.
2. Enter the unlock PIN and tap Unlock.
3. Enter the new lock PIN in the New PIN field.
4. Enter the lock PIN again in the Confirm PIN field.
5. Save the change.
Disabling Phone Lock
If your system administrator sets security restrictions and enables the phone lock, you are restricted from
disabling it.
Procedure
1.
Go to > Settings > Device Settings > Phone Lock.
2. Enter the unlock PIN and tap Unlock.
3. Disable Lock Enable.
Using a Teams Phone as a Common Area Phone
Your phone can be set as a Common Area Phone (CAP). Instead of being located in someone’s office,
common area phones are typically placed in an area like a lobby or another area that is available to many
people to make a call; for example, a reception area, lobby, or conference room.
You have access to certain features for the common area phones:
•CAP account: You have calls capability. You also have the searching capability if your system
administrator enables it on the Microsoft Teams & Skype for Business Admin Center.
•Meeting account: You have calls capability and can join the scheduled meeting.
•Signing into a CAP/Meeting Account
•Signing out of a Common Area Phone
Signing into a CAP/Meeting Account
Procedure
1. Tap Sign in.
| Signing into Microsoft Teams and Locking Your Phone | 19
You will be connected to the Company Portal automatically.
2. Enter your user credentials.
| Signing into Microsoft Teams and Locking Your Phone | 20
3. After the phone signs in successfully, tap Got it.
After signing into the CAP account, the screen is displayed as below:
After signing into the Meeting account, the screen is displayed as below:
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