AT&T Collaborate

AT&T Collaborate – Enhanced Mobile is a Fixed Mobile Convergence solution that provides business, desk phone features on mobile phones. Improve mobile communications with your customers and collaborators by providing your high-definition voice business smartphone users the tools they need when connected to the AT&T VoLTE network.

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AT&T Collaborate app for Android tablets

The AT&T Collaborate™ service provides the Collaborate app to help you manage calls and conferences on the go. The app provides voice, video, and advanced communications features. It comes in these versions:

  • Mobile Audio Only
  • Mobile
  • Tablet
  • Desktop

The Unified Communications (UC) bundle provides voice features plus video and advanced communications features. This bundle includes the Mobile, Tablet, and Desktop apps.

The Tablet version of the app provides these features:

  • Voice over IP (VoIP) calling
  • Voice calling
  • Collaborate service call settings
  • Instant messaging and presence (UC bundle only)
  • Video calling (UC bundle only)

You can download the Tablet version of the app for Android™ from Google Play™ Store.

Get started
Main tabs
Chat tab
Audio and video calls
Call history
Side navigation
My Room
Screen Share
Multi-device support
Other features

Get started

After you start the app the first time, when you sign in, you can choose automatic sign-in for future use. You can use either basic or advanced sign-in.

  1. Enter the Collaborate app username and password that your administrator provided.
    Note: Your app username starts with your 10-digit Collaborate phone number followed by (for example,
  2. Decide if you want the app to remember your password.
  3. Decide if you want to sign in to the app automatically.
  4. Tap Sign In.

Note: If you choose to sign in automatically, the next time you start the app you’ll be signed in automatically and be taken to the Contacts list. If you choose to not sign in automatically, the Sign In page appears each time you start the app.

A dialog box appears with information about emergency calls and an option to update your device’s registered location.

Basic sign-in has 3 options:

  • Update location—Set the registered location, then sign in.
  • Accept—Start using the app.
  • Cancel—Return to the Sign In page.

Advanced sign-in has these options:

  • Update location—Opens a Web browser where you can set the location. After you set your location, return to the Sign In page. If you successfully updated your location, you can sign in and use the app.
  • Cancel—Sign-in is canceled and the Sign In page appears.


Main tabs

When you start the Collaborate app the first time, your Contacts list is empty. To find people in your company and add them to your Contacts list, use the Search field. To manually add contacts, tap Add.

Collaborate provides these contact icons on Android tablets


Icon Description
Contacts ison
View your contacts from a Buddy list, your device’s address book, or your company directory..
Dial pad icon
Dial pad
Make calls.
Chat icon
View chat history.
History icon
View incoming, outgoing, and missed calls.
My room icon
My Room
Join your personal chat room.

Tabs contain information about contacts and communications options

The main app view contains tabs that present information about contacts and communications options:



The Contacts list on the Contacts tab contains 2 types of contacts:

  • Presence-enabled: users who can chat and send instant messages.
  • Non-presence enabled: phone or conference numbers. These contacts are stored on the server and are available on all of your app instances.

You can mark any contact as a favorite, and then the contact appears at the top of the Contacts list in the Favorites section. The Tablet app shows contact groups created from Desktop. Note that you can’t create or edit contact groups with the Tablet app.

You can filter your contacts:

  • Collaborate Contacts
    • To view all presence-enabled and non-presence enabled contacts, select All.
    • To view only the presence-enabled contacts that are online, tap Online.
  • Contact Directories
    • To view contacts from your device’s address book, tap Local Address Book.
    • To search for contacts from the company directory, tap Directory.

Add contacts

To add contacts, do 1 of these things:

  • To add a new presence-enabled contact, in the bottom-left bar, tap the plus sign (+), and then tap Add Contact.
  • From the Contacts tab, search the directory.
    • On the Add Contact page, enter the contact’s information, and then tap OK.
    • By default, your presence information is always shared with a new contact.
  • To add a local contact, in the bottom-left bar, tap the plus sign (+), and then tap Add Local Contact. The address book appears. Tap to select a contact from your device’s address book.

Add a group

  1. In the Contacts list, tap the plus icon (+) in the left bottom bar, and then select Add Group.
  2. Type a group name, select contacts you want in the group, and then select Done.

Add a conference contact

A conference contact is a special contact used to save a conference bridge. With a conference contact, you don’t need to remember a PIN code and a conference number, such as for a recurring conference.

  1. Tap the plus sign (+) icon in the left-bottom bar, and then select Add Conference.
  2. Enter the conference information, and then tap OK.

Add a Buddy request

You can accept or decline a Buddy request. If you decline the Buddy request, you can share your presence information later.

  • To share your presence information, from the Buddy contact card, select Subscribe.

Note: The contact must accept your subscription request for you to successfully establish the presence relationship.

Edit contacts

These steps are the same for contacts if they are presence-enabled or not.

  1. From the Contacts list, tap a contact. The Contact card opens.
  2. Tap the on-screen 3-dot symbol (3-dot symbol), and then tap Edit. The Contact Information dialog box opens, where you can edit information.
  3. Do 1 of these things:
    • To remove the presence relationship between you and the contact, tap the on-screen 3 dot symbol (3-dot symbol) and tap Unsubscribe. You don’t see the contact’s presence information, and your contact doesn’t see yours. An unsubscribed contact remains on the Contacts list and is always shown as offline.
    • To re-establish a presence relationship, tap Subscribe.
    • To remove the contact from your Contacts list, tap the on-screen 3-dot symbol
      (3-dot symbol), and then select Remove.



Presence means that your friends can see if you’re available. You can see the presence of each contact to which you’ve subscribed and your contacts can see your presence on their Contacts list.

Presence icons


Icon What it means
green presence icon The green Presence icon indicates that you’re online and ready to communicate.
yellow presence icon The yellow Presence icon indicates that you’re online through Desktop, but you have been idle or away from your computer for more than 10 minutes.
Red presence icon The red Presence icon indicates that you’re busy and don’t want to be disturbed.
Gray presence icon The gray Presence icon indicates that you’re offline. Others can contact you only by calling or leaving a chat message.
Gray question mark icon The gray Question Mark icon indicates that a subscription is pending and you haven’t yet agreed to share your presence.
Red phone icons The red Phone icon indicates that you’re busy on a call. This is an automated presence status.
Red meeting icon The red Meeting icon indicates that you’re busy in a meeting. This is an automated availability status. The Busy – In Call status overrides the Busy – In Meeting status, so this icon appears only for meetings with no call.

Icons show your availability.

Presence is updated by appointments and meetings that you accept or make. Note that all-day meetings don’t change your presence to Busy – In Meeting.

Set your presence

  • From the status bar in all tabs view, tap the Presence icon. The My Status page appears, where you can change your profile photo, personal message, and presence status.

Your profile photo is the picture that represents you to your contacts, on their Contacts lists and on chat pages.

Change your profile photo

  1. Tap a profile photo.
  2. Do 1 of these things:
    • Select an existing image.
    • Take a new photo with your device’s camera.
    • Remove your profile photo.
  3. In the area next to the profile photo, enter a status message. This status message appears in your friends’ Contacts list.


Chat tab

The Chat tab lists recent chats (instant messages) since the last time you signed in. Multiple chats, or discussions, between the same 2 people appear as 1 item in the list.

Open Chat view

  • In the right pane where you can type new messages, tap a name from the Chat list. Recent and old messages appear.

New messages show a notification badge next to the name. The icon remains next to the name until you read the message.

Chats are always listed in the order in which they’re received, with the most recent one first.

To remove all notification badges from the Chat History list, in the navigation bottom bar, tap the Mark All Read icon. To open a list of users and select those for a group chat, tap the Start Group Chat icon.

Start a chat

To start a chat, do 1 of these things:

  • From the Contacts list, tap a contact. A contact card opens. Tap the Chat icon.
  • Press and hold a contact name. From the options provided, tap the Chat icon.
  • In the Chat History list, tap a contact entry.
  • On the Chat tab, tap the Start New chat icon.
  • From search results, tap a contact to open the contact card. Tap the Chat icon.

When you start a chat, the Chat page opens in the right pane. To open a chat in full screen, tap the Collapse icon (Collapse icon to hide left pane) to hide the left pane. To open the left pane, from the tab bar select any tab or tap the Expand icon (Expand icon).

You can chat with a contact only when you’re both online. When your contact initiates a chat, a notification badge appears on the Chat tab and the entry appears at the top of the Chat History list.

When a chat opens, the name of the recipient appears in the top bar along with a Presence icon. Your chat contact’s messages appear in the blue background, and your messages appear in the white background.

The text input field in Chat uses auto-correct, auto-cap, and spell check based on system settings. To turn these features on or off, use the system settings.

Start a group chat

A group chat works the same way as a 1-on-1 chat. All messages from anyone are sent to everyone else. To participate in a group chat, all contacts need to be online. To start a group chat, do 1 of these things:

  • In single chat session, tap the Add Participant icon to change from a single to a group chat.
  • On the Chat tab, tap the Start Group chat icon in the bottom-left bar.
  • In the Chat History list, tap a group chat.

When you start a group chat, the Chat page appears. To add participants, tap the Add Participant icon. Anyone in the group chat can add participants. The chat owner can remove participants from the participant’s list.

  • To view your group chat history, click the Chat tab.
  • To leave a group chat, tap Leave chat. The chat is marked as offline and you don’t receive messages from the chat. To rejoin the chat, tap the offline chat. You receive messages again, but you don’t receive messages sent while you were outside the room.
  • To clear your chat history, use the Clear History menu. To view the list of group chat participants, tap View Participants. You can delete a chat room.


Audio and video calls

The Dial Pad tab displays a dial pad and a text field where you can enter numbers. Use the dial pad to make audio or video calls.

There are 3 buttons below the dial pad: Call, Video call, and Dial Pad. The top text field also has a Delete button that deletes 1 character at a time.

When you have a voicemail, a badge notification appears on the Dial Pad tab and the voicemail icon under the number 1 turns from gray to blue. To open voicemail, press and hold 1. The Dial Pad menu contains 2 options, Pull Call and Retrieve Call.

Make audio or video calls

To make a call, do 1 of these things:

  • From the Contacts list:
    • Tap a contact. A contact card opens.
    • To make an audio call, tap the Headset icon. To make a video call, tap the Video icon.
  • From search results:
    • Tap a contact. A contact card opens.
    • Press and hold the Audio or Video icon.
  • Open the dial pad, enter a phone number, and then tap Call or Video.
  • In the Call History list, tap a call entry.
  • On the Chat page, tap the Headset icon to make an audio call. To make a video call, tap the Video icon.

Answer a call

When you receive an incoming call, your phone rings. On the Incoming Call page, tap Accept or Decline. If you decline the call, a busy signal plays and the caller knows that you rejected the call.

In Call actions

From the In Call page, you can:

  • End a call
  • Mute the microphone
  • Open the Dial Pad
  • Adjust the volume
  • Change from an audio to a video call, and change from a video to an audio call
  • Place a call on hold
  • Make a new call
  • Transfer a call – Attended
  • Transfer a call – Unattended
  • Start a conference
  • Transfer a call to a circuit-switched call
  • Add more participants to a conference call while you’re in a conference
  • Merge 2 separate calls
  • Swap 2 separate calls
  • View participants (on a conference call)

Missed calls and new messages

Notifications, used for missed calls or new messages, appear as badges on the tabs.


If you have pending voicemail messages, the notification bar on your device displays an icon and message showing the number of pending voicemail messages. To listen to your voicemail, tap the voicemail notification icon. The Tablet app dials the voicemail access number directly.

You can also listen to voicemail by pressing and holding the number 1. If messages are available, the number 1 changes color. The voicemail notification appears as a badge on the Call tab.

Contact name lookup for incoming calls and call logs

When you receive a call, the app searches for the caller’s name in these sources and in the following order:

  • Chat contact name
  • Enterprise directories
  • Local contacts

If the name is the same as one of the contacts, the name appears on the Incoming Call page.

Ad hoc conference calling

The app supports network SIP-based conference calls. While you’re on a 2-person audio or video call, you can add more participants.

Add conference participants
To add conference participants, do 1 of these things:

  • Add participants from the address book.
    • Tap Conference. The address book opens.
    • Search for and select new participants.
    • Start the conference. The participants appear on your device’s screen.
  • Add participants in an existing Conference.
    • Make a new call to a new participant.
    • Tap Merge.

Call waiting

You can have 1 active call at a time. If you accept a new call, the current call is put on hold and the second call is connected. You can change between these 2 calls by tapping the Swap button. Or, from the left side list, tap a call to swap it.

Make a new call while on an active call

You can start a new call while on an ongoing call.

  1. Make a call.
  2. Start a second call by tapping the New Call button.
  3. Select a contact, and then choose a number.

When the new call connects, the first call is put on hold. You can swap the 2 calls or merge them into a conference call.

Call Recording

The Call Recording feature allows you to record your incoming and outgoing calls. Your administrator assigns your call recording settings. Depending on your settings, you can start, pause, resume, and end your recordings.

Note: You can only start and stop recording if you’re assigned On demand with user-initiated start. You can pause and resume recording if you’re assigned Always with pause/resume or On demand with user-initiated start.

  1. During an active call, open the dial pad, and tap the pause button (Pause button). The call is put on hold.
  2. Use 1 of the following dial codes, and then tap the call button (Call button):
    – To start recording, dial *44
    – The pause recording, dial *48
    – The resume recording, dial *49
    – To stop recording, dial *45

You’re transferred back to the original call and the call recording announcement plays.

Call transfer

You can transfer VoIP calls to another person. There are 2 forms of transfer:

  • Attended Transfer—Make the first call. When the person answers, select a contact and then choose the number where you want to transfer the call. Select the Call First option. When the second person answers, tap the Complete button to talk with the second person privately before completing the transfer and being dropped from the call.
  • Unattended Transfer—Make the first call. When the person answers, select a contact and choose the number where you want to transfer the call. Select the Transfer option. The call is transferred and you’re dropped from the call.

Call Pull

Use the Call Pull feature to seamlessly transfer a call from one of your phones to another, for example, a VoIP desk phone and a mobile phone with the Collaborate app. If you have an active call on your desk phone, you can seamlessly transfer the call to your mobile phone by tapping the Call Pull button. Depending on the app, dialing settings, and service configuration, the call can be pulled as a VoIP or circuit-switched call to your mobile phone. The call stays active as it’s transferred.

Call Park

Using the Call Park feature, you can park a call on an extension. The parked call is placed on hold until it’s retrieved. If you don’t retrieve the call within a certain time, Collaborate calls to remind you.

Swipe between chat and video views

You can switch between Chat and Audio or Video communication sessions for your My Room, other users’ My Room, and 2-way Chat sessions. To see if you can switch between sessions, look for dots at the bottom of your screen. To switch between sessions, simply swipe.


Call History

To view Call History, tap the History tab. The Tablet app saves a call history for all calls, even calls you missed.

Call history makes it easy for you to call back when you miss a call or when you want to dial a contact you’ve recently spoken with.

The call list shows the type of call (a green arrow means incoming, a blue arrow means outgoing, and a red arrow means missed). It also shows the name, number (if available), and the caller’s status. To the right, the date and time of the call appear.


Side navigation

The side navigation contains these options:

  • My status
  • Call settings
  • Preferences
  • Test call
  • About
  • Help
  • Sign out

My Status

To set your availability, tap your personal status from the side navigation. The My Status page appears, where you can change your profile photo, personal message, and availability status.

Your profile photo is the picture that represents you in your friends’ Contacts lists and in chat pages. Select an existing image, or take a new one with your device’s camera. To clear your profile photo, tap a profile photo.

Note: To set a profile photo when the Tablet app is working inside an Android for Work profile, a Camera app inside the Work profile should be installed on the device. Your administrator should provision such an app for the given Work profile, and you should install it before you change your profile photo.

You can enter a status message in the area next to the profile photo. This status appears in your friends’ Contacts lists.

If you see the Chat Unavailable message under any tab, you can still make calls, but your connectivity has been lost for chat and presence. For help, contact your administrator.

Call Settings

In the app’s Preferences window, you can turn the following features on or off:

  • Do Not Disturb
  • Call Forwarding
  • Caller ID Blocking
  • Virtual Office
  • Dialing service
  • VoIP calls
  • Simultaneous Ring
  • Your phone number

Do Not Disturb

When you turn on Do Not Disturb, all calls are blocked and typically sent to voicemail.

Call Forwarding

To forward calls, tap 1 of these Call Forward options, and enter the forward-to number:

  • Call Forward Always
  • Call Forward Busy
  • Call Forward No Answer
  • Call Forward Not Reachable

Caller ID Blocking

You can show or hide your number when you call or communicate with others. To hide your number, set Caller ID Blocking to Enable. To show your number, set it to Disable.

Virtual Office

Virtual Office extends the features of your desk phone to other devices, regardless of the network or handset manufacturer. Callers dial your number and reach you on the phone you choose. Your desk phone, mobile phone, or a device running the Collaborate app can ring simultaneously. You can move active calls from one device to another without hanging up.

  • To add Virtual Office numbers, tap the Add New Location button.
  • To activate parallel ringing, select Alert all locations.
  • To prevent a call from going to voicemail, select Diversion inhibitor.
  • To receive a separate audio prompt when answering a call from that number (location), select Answer Confirmation. This may be useful in cases where, for example, mobile phone numbers are used to prevent incoming calls from going to mobile voicemail. If the answer confirmation message isn’t provided, calls end without going to voicemail.
  • To turn on call features such as Call Transfer and Meet Me Conferencing, tap Call Control.


You can set these preferences:

  • Language is English
  • Sign in automatically
  • Troubleshooting

Language Support

Currently, the Tablet app is available in U.S. English.


If you experience issues with the Tablet app, use the troubleshooting function. Troubleshooting collects and sends diagnostic information to a predefined support email address. The information sent consists of the app and media engine diagnostic logs.

Troubleshooting is managed by a menu entry in Settings. You can access it from the following 2 areas:

  • On the Sign In page from the Settings button. This opens the page that contains the help and troubleshooting-related entries. You can access troubleshooting before you sign in, which is useful when you have issues with signing in or connectivity.
  • From the Preferences page, accessible from the side navigation. You must sign in to the app first.

Automatic sign in

You can choose to sign in automatically using a default account when you start the app. When you start the app and sign in automatically at system startup, you can be available for communication faster.

Help page

The Tablet app provides Web-based help from the Settings view.

Sign out

You can sign out at the bottom of the left-side navigation drawer.


My Room

My Room is an always-available permanent room that you can use to chat with anyone who joins. To enter My Room, tap the My Room icon (Tap my room icon) on the Tab bar.

To add more participants, tap the Add Participants icon. Participants can also join your room from your contact card. After participants join the chat room, they can tap the Call button of that page to automatically join the conference.

My Room uses your permanent chat room, permanent collaboration room, and a conference bridge (audio). All My Room sessions start as chats, but you can add a call to the session while it’s in progress.

Others can join your room by clicking your name on their Contacts list and selecting Join Room from your contact card.


You can search in Collaborate Contacts, your phone’s address book, and the directory. The search appears in a separate input field on the Contacts tab. After you search, the results appear with names and numbers.

When you tap the Search icon, the default starting page for a search appears. To search for contacts, enter text. To minimize the keyboard, hide the Search bar, empty the search results, and press the Back key. To open the context menu, hide the keyboard, and maintain the search bar with the characters, press and hold a name. To open the contact card, use a short tap.

The context menu contains the following options for the directory list:

  • VoIP call
  • Video call
  • Contact details


Screen Share

The Tablet app lets you view a Screen Share session initiated on a desktop. When a Screen Share invitation is sent through the Desktop app, the badge notification appears on the main bar and in the Chat list view. To open a communication pane with sharing by default, select the entry with screen sharing from the chat list. To return to the chat or call (if present), simply swipe. When you pause the sharing, the Screen Share view stays active and shows the last image that was shared.

Viewing Screen Share is available in all communication modes:

  • My Room
  • One-to-one chat
  • Ad hoc group chat room (multi-user chat)


Multi-device support

The Collaborate app supports users who have multiple devices in these ways:

  • Chat invitations are sent to all your devices.
  • Retrieving your own presence notifications when another app updates your presence. The app updates its own status based on the information it receives from the server.
  • Accepting a shared presence invitation in 1 app is also recognized by another app, and both apps start receiving presence updates.
  • A new presence subscription made in 1 app is recognized in another. If the contact blocks the invitation, the server sends presence notifications to all your apps to indicate that the subscription was terminated, and this information is shown to you. If the app receives 2 presence authorization requests from 2 or more devices for the same user, it only shows 1 request to the user.
  • Removing a contact from a Contacts list in one device is recognized in another app, and the Contacts list is updated (the contact is removed) in both apps.


Other features

Manage privacy

When you add a contact to the Contacts list, these contacts see a New Subscriber dialog box that asks whether they’ll allow you to see their presence. Their response is stored in the contact’s presence policies entry in your Contacts list.