Zextras Team
- What is Zextras Team
- Licensing
- Zextras Chat and Zextras Team
- Zextras Team Zimlet installation
- URLs and Ports
- Zextras Team administration
- Browser compatibility
- Mobile App
- UI
- Instant Messaging and Corporate Communication
- File sharing
- Video Chat
- Instant Meetings
- Autocomplete
- Presence
- Unread Messages
- Edit, Reply, Forward and Delete Messages
- Chat History
- STUN/TURN Server
What is Zextras Team
Zextras Team integrates a fully fledged corporate instant messaging platform inside the Zimbra WebClient, including Group and Corporate Messaging, File Sharing, Screen Sharing and informal Video Chat capabilities.
Zextras Team is not compatible with Zimbra version 8.8.11 and lower. |
Frontend Features
Zextras Team includes the following front-end features:
-
Message delivery and read awareness
-
1-to-1 Instant Messaging
-
Group Messaging
-
Corporate Messaging (Spaces and Channels)
-
Group Video Calls
-
Channel Video calls
-
File Sharing
-
Screen Sharing
-
Emojis
Backend Features
Zextras Team includes the following backend features:
-
COS and User availability
-
Built-in TURN server compatibility
-
No core installation needed. Zimlet installation through a package manager.
-
No configuration needed
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Peer-to-Peer WebRTC protocol to avoid server load
-
Dedicated audit log
Licensing
Zextras Team is licensed on a per-user basis.
Global Admins can enable its Advanced features for any number of users up to the limit allowed by the license, and only "advanced" users count towards any licensing limit.
The total number of users who have the Advanced features active can be seen in the output of the zxsuite core getLicenseInfo
command under teamChatActiveCount
:
zimbra@129efa51bd95:~$ zxsuite core getLicenseInfo
dateStart 2019-06-11 00:00:00 UTC dateEnd 2019-12-31 17:00:00 UTC expired false [...] teamchatActiveCount 999 [...]
This count is updated every 15 minutes.
Zextras Chat and Zextras Team
Zimbra Chat and Zextras Team are neither compatible nor interoperable, meaning that the two products cannot coexist on any Zimbra NE infrastructure. The Zimbra Chat zimlet gets uninstalled during the installation process of the Zextras Team Zimlet package. However, Zextras Team includes all basic IM features provided by Zimbra Chat, which automatically gets enabled for all users who don’t have access to the advanced Zextras Team features. Advanced users can use all of the product’s features with other advanced users and can use 1-to-1 Instant Messaging with basic users, while Basic users can use the basic 1-to-1 features with all other users.
All users start as «Basic» users, and the «Advanced» features can be enabled by Global and Delegated admins.
Zextras Team Zimlet installation
The `com_zextras_Team Zimlet can be deployed from the "Core" section of the Zextras Adminictration Zimlet.
No configuration on the mailboxd side is needed after the Zimlet has been deployed and enabled.
URLs and Ports
To build URLs and links (e.g. for External Shares) Zextras Drive uses the default Zimbra settings for the domain of the account in use - the zimbraPublicServiceHostname
property is used for the URL itself while the zimbraPublicServicePort
property is used for the port.
Should any of the two not be set up, the system will always fall back to the zimbraServiceHostname
and zimbraMailPort
or zimbraMailSSLPort
server-level properties.
For Video Chats and Instant Meetings, the following rules apply:
-
Team will work through firewalls and NATs as long as the peers can communicate each with the other - either directly or through a TURN server (which together with proper network rules is usually the solution to any WebRTC connection problem).
-
When no TURN server is set up, a default STUN server is used so clients should be able to send outbound traffic to ports 19305/19307. The actual P2P connection is established between the clients on a random unreserved port between 1 and 65535 based on the client configuration and network.
-
The default handshake/negotiation port used by most TURN servers is 3478 (incoming, UDP), but a different port can be used as long as it is properly set up> on the Team side the port is specified when adding the TURN server and the clients clients will be instructed to connect through it. The default P2P connection range when using a TURN server is 49152-65535 (usually configurable on the TURN side) so clients should be able to send data to that port range to the TURN server.
-
Most TURN servers can also be configured to use TCP insted of UDP.
-
Zextras Team administration
Zextras Team features can be enabled and disabled from the "Team" section of Accounts and Classes of Service in the Zimbra Administration Console.
The same options are also available via the zxsuite config
command line utility:
-
Enable Zextras Team «Advanced» features
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Property:
teamChatEnabled
-
Available in: COS, account
-
-
Enable or disable the chat history
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Property:
historyEnabled
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Available in: global, server, COS, account
-
-
Enable or disable Video Chat
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Property:
videoChatEnabled
-
Available in: global, server, COS, account
-
Browser compatibility
Zextras Team features are available on all browsers officially supported by the {product-short} {web-client}, with some client-side limitations:
Browser | Version | OS | Supported |
---|---|---|---|
Microsoft Edge (Chromium) |
Latest |
Windows |
Yes |
Microsoft Edge (Chromium) |
Others |
Windows |
Limited |
Microsoft Edge (EdgeHTML) |
Any |
Windows |
No |
Internet Explorer |
Any |
Windows |
No |
Mozilla Firefox |
Latest |
Windows/Linux/OSX |
Yes |
Mozilla Firefox |
ESR |
Windows/Linux/OSX |
Yes |
Mozilla Firefox |
Others |
Windows/Linux/OSX |
Limited |
Google Chrome |
Latest |
Windows/Linux/OSX |
Yes |
Google Chrome |
Others |
Windows/Linux/OSX |
Limited |
Safari |
Latest |
OSX |
Yes |
Safari |
Others |
OSX |
Limited |
While likely to work, items marked as " Limited" are only supported on the browser’s two previous stable releases to the current one.
Google Chrome users must install the "Zextras Companion" extension to use the Screen Sharing feature, publicly available in the Chrome Web Store.
Firefox users must be sure to be running at least version 66 of the browser to be able to use the Screen Sharing feature.
Mobile App
A dedicated Zextras Team mobile app is available for both Android and iOS.
In order for mobile message delivery to work, the Zimbra server must be able to communicate with the notifications.zextras.com service on port 443
|
Notifications on Android Devices
Several Android devices manufacturers have strict default settings on which apps can display notifications, sometimes causing the Zextras Team App not to be able to notify new messages.
To make sure that your device allows all required notifications, follow these steps:
-
Log out from the app;
-
Access the device’s Settings, then enter the "Apps & Notifications"1 menu;
-
Select the Team app from the list of all installed apps;
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Enter the "Notifications"1 section;
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Enable the notifications (first option on the top);
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Enable the banner notification on the "Chat", "Group" and "Spaces & Channels" subsections;
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Log back in, notifications should now work;
Entries marked as (1) might have a different name depending on your device’s manufacturer and UI. |
UI
The Zextras Team UI is developed in PREACT and seamlessly integrated with the Zimbra Web Client. It is composed of two client-side components: the Quick Access Sidebar and the fully featured Team Tab.
The Quick Access Sidebar allows for quick Instant Messaging, both for 1-to-1 and group conversations. Advanced Zextras Team features such as File Sharing and Video Chat are available in the IM Pane only for users who have the Zextras Team feature set enabled either at account or COS level.
The Team Tab is the full-sized Zextras Team UI, which contains all corporate instant messaging features such as Spaces and Channels. The tab itself is available for both Basic and Advanced users, but corporate features are only available to Advanced users.
Instant Messaging and Corporate Communication
1-to-1 chat
One-to-one Chats can start from either the Quick Access Sidebar or the Team ab:
-
on the former, select one of the available entries (based on your chat history) and start chatting with that person right away
-
on the latter click on "New," then "New Chat" and select the person you want to chat with from the GAL
Recent 1-to-1 chats appear in the "Conversations" section of the Team ab and the Quick Access Sidebar (round icon).
Groups
Groups are how users communicate with multiple people at the same time (by default up to 5 total). Those are non-persistent entities not tied to any specific space. Any user can create a group inviting people, and any group member can invite more people in the same way. When all users leave a group, the group itself ceases to exist.
Groups Features
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A user in a Group can add more users to the Group itself up to the allowed limit.
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A user in a Group can chat with all of the others. All members of that Group can view all messages sent to the Group.
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A user in a Group can send files to all of the others. Files sent in a Group are available to all members of that Group.
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An user in a Group can start a video chat with all of the others. Group video chats can be joined at any time by all members of the Group.
Global Administrators can change the allowed maximum number of group members in the Zextras Team section of the Global settings in the Admin Console.
Groups UI
Recent Group chats appear in the "Conversations" section of the Team ab and the Quick Access Sidebar (rounded square icon).
-
Creating a Group
To create a new Group, click on the "New" button in the Team ab, and select "New Group."
then, add the Group’s title, select the buddies you wish to invite and click on "Create."
-
Inviting a participant to a Group
To invite one or more buddies to a Group expand the Group’s Info, select the users to be added and click on "Save."
-
Starting a Group Video Chat
To start a Group video chat, click on the "Camera" icon on the top of the Group’s chat window.
Any member of the Group can join the call at any time by clicking on the same button.
-
Leaving a Group
To leave a Group, first, click on "Leave Group" in the Group’s Info
then, click on "Yes" under the warning message.
Spaces
Spaces are a themed container that can hold any number of Channels. Think of a Space as a community center where people gather to discuss different topics in dedicated areas (named Channels).
Spaces Features
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Each space has a unique name and topic. You may change both the name and the Topic by clicking on the relevant field in the Space’s settings.
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Members can leave a space at any time.
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Space Administrators can create new channels and invite new people to the space using the appropriate buttons.
Spaces UI
Spaces appear in a dedicated section of the Team ab, which gives access to all Space-related features:
-
Creating a Space
To create a new Space, click on the "New" button in the Team ab, and select "New Space."
then, enter the Space’s name and topic, select any users to invite and finally, click on "Save."
-
Leaving a Space
To leave a Space, click on the "Leave Space" in the Space’s General Channel Info.
Participants can leave a space at any time, while a Space Administrator can only leave a space if there is at least one other Space Administrator.
Both need to be invited to join the space again, and former Space Administrators get invited as regular participants but can be granted Administrator rights again.
Space Settings
Its General Channel Info defines a Space’s settings (see below).
The Space’s creator is also the first Space Administrator and can grant the same rights to any other user by clicking on the crown icon in the appropriate entry of the participant list.
Only Space Administrators can invite new participants, create new channels, kick people, and delete channels within the space.
Channels
Channels are topic-defined areas inside of the same space. Those can contain any number of users, and unlike Groups, users can autonomously join any Channel in a Space they are in instead of being invited to it by a member.
Each new Space has a "General" channel automatically created within it, which defines the space’s properties (e.g., Title and Topic) and which all users automatically join when they join the Space.
Channels Features
-
A user in a Channel can chat with all of the others. All members of that channel can view all messages sent on the Channel.
-
A user in a Channel can start a video chat with all of the others. Channel video chats can be joined at any time by all members of the Channel.
Channnels UI
Channels appear in Spaces within the Team ab and all of the Channel-related features are managed there, by:
-
Creating a Channel
To create a new Channel, click on the "New" button, and select "New Channel."
then select:
-
the Space that should contain the Channel (mandatory)
-
the Channel’s name (mandatory)
-
the Channel’s topic (optional)
finally, click on "Save."
-
-
Joining a Channel
To join a Channel, click on the Channel label and then on "Join Channel."
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Starting a Channel video chat
To start a Channel video chat, click on the "Camera" icon on the Channel’s chat window.
Any member of the Channel can join the call at any time by clicking on the same button.
-
Leaving a Channel
To leave a Channel, first, click on the red "Leave Channel" entry in the Channel’s Info
Both normal users and Space Admins can leave a channel at any time and join it afterward.
File sharing
Users can easily share files via Team to Chats and Groups by dragging and dropping the files directly into the chat interface (both in the minichat and in the Teamtab) or by clicking the "paperclip" icon on the right of the message input field. Multiple files can be uploaded at once, and image files will show a preview of the file while other common filetypes will display a custom icon.
Clicking on a file within a chat window will download it to the local client using the browser’s own download interface.
Files shared via Team will be stored inside a protected root folder the sender’s Drive called Team sent files
, thus counting towards the sender’s mailbox quota, and will remain available for download in the chat window for all participants until deleted from Drive by the sender.
Video Chat
Video Chat features are available in 1-to-1 chats, Groups, and Channels, allowing multiple people to communicate in real-time using a webcam and a headset, as well as allowing them to share their screen with all other attendees.
The WebRTC protocol is the foundation for this feature. WebRTC is a peer-to-peer auto-adaptive technology that allows clients to communicate directly without overloading the server. Call quality is automatically tweaked based on the available bandwidth, with the maximum quality being Full HD for both video and audio. When starting their first video chat, users need to grant their browser access permissions to their camera and microphone.
Video Chat UI
The video chat UI has three main areas:
-
The center displays video streams with a single (main) stream on the top and multiple secondary streams on the bottom. The total number depends on the screen’s resolution and window size.
-
On the left is the Group’s or Channel’s instant messaging chat. This chat is visible and entirely usable, and its history gets retained in the group’s or channel’s chat history.
-
On the bottom left appear the user’s video feed and controls (disable video, mute microphone, and share screen).
Users can disconnect from an ongoing video chat by pressing the "Hang up" button in their video stream’s frame on the bottom left of the screen. Whenever a video chat is on, users belonging to the Group or Channel of the video chat see a "Call in progress" message below the name of the Group or Channel and may join by clicking on the "Camera" icon in the chat.
Before entering any Video Chat, a pop-up will appear allowing to activate or disactivate both the sound and video feeds. This preference is always saved, and sound/video can be freely enabled or disabled during the call regardless of the choice. |
Instant Meetings
Instant Meetings are one-shot Video Chats that can be attended by external users as well as internal users.
To create an Instant Meeting, click on the "New" button in the Team Tab and select Instant Meeting.
Then, fill in the attendee list by entering any internal or external email address in the text box and pressing enter to add it to the list. Once all attendees are added, press "Save" to send an email notification to all participants and start the Instant Meeting.
Autocomplete
Autocomplete in Team is split in two different categories: Internal Autocomplete and External autocomplete.
Internal autocomplete kicks in when selecting a target for 1-1 Chats, Group Chats, Spaces and Channels, while External autocomplete is only used for Instant Meeting attendees.
This can be changed by setting the teamCrossDomainSearchMode
COS property to either local
, extended
or global
using the zxsuite config [get/set/empty]
CLI toolset.
-
local mode, in which Internal Autocomplete will draw its information from the GAL, while External autocomplete will draw its information from the user’s Contacts and GAL.
-
extended mode is a superset of local that also matches full email addresses of any user in the same infrastructure as internal users.
-
This allows to initiate a 1-1 Chat with or to add to a Group/Space/Channel any user that is on the same infrastructure but out of the GAL as long as the exact email address is entered.
-
-
global mode is a superset of extended that does not require an exact match on the email address to autocomplete users in the same infrastructure.
-
This allows to autocomplete any user in the infrastructure as opposed to the strict email addres match required in extended mode.
-
The default setting inherited by all COS is local.
Presence
Presence is managed automatically in Zextras Team: whenever a user logs in, regardless of whether the Team ab has the focus, they appear as online.
As part of the user presence system, all messages get displayed with a variable number of check symbols:
-
0 checks, message not delivered to the server
-
1 check, message delivered to the server
-
2 checks, message viewed by all users
Unread Messages
The number of unread messages in any conversation, Group or Channel appears on the right side of the conversation, Group, or Channel.
Edit, Reply, Forward and Delete Messages
Right clicking on a message or hovering on a message and clicking on the arrowhead that appears on the right side of the message bubble displays a context menu that shows the available actions:
-
Edit: change the message’s content. The "edited" string will appear next to the message delivery icon.
-
Reply: reply to a message. The reply will be in the same chat and will not be private
-
Forward: forward a message to another chat, group or channel.
-
Delete: delete a message. The message bubble’s color will change to gray and the "Deleted Message" string will appear instead of the original text.
The following table recaps all message interactions:
Type |
Can be edited |
Can be deleted |
Can be forwarded |
Text Message |
(Only own messages) |
||
File Attachment message |
(Only if description already exists) |
||
Conversation Status message |
|||
Edited message |
|||
Forwarded message |
|||
Deleted message |
Chat History
Chat History for each 1-to-1 Chat, Group, and Channel is available in the very same window (e.g., enter a Channel to see all of that channel’s history) and messages delivered to offline users appear in the appropriate IM conversation, Group or Channel.
STUN/TURN Server
Since WebRTC is a peer-to-peer protocol, all users in a video chat must be able to reach each other’s client for the connections to get established.
Should this not be possible, because of NAT rules on the network or because of a Service Provider’s policy, using a TURN server ensures proper communication between all peers. Zextras Team is designed to allow using a STUN/TURN server out of the box by simply adding the TURN server’s URL and login information in the zimlet configuration.
Setting up Zextras Team to use a TURN server
A dedicated set of TURN configuration tools is available via CLI through the zxsuite team iceServer
command:
zimbra@mailserver:~$ zxsuite Team iceServer Edit the list of ice servers which will be used to establish connections for video calls. Configuration available for global(default), cos or account. add - add ice server candidates using global (default), cos or account zxsuite Team iceServer add {turn:turn.example.com:3478?transport=udp} [attr1 value1 [attr2 value2...]] remove - remove ice server candidates using global (default), cos or account zxsuite Team iceServer remove {turn:turn.example.com:3478?transport=udp} [attr1 value1 [attr2 value2...]] get - get ice server candidates using global (default), cos or account zxsuite Team iceServer get [attr1 value1 [attr2 value2...]]
The "add" subcommand is used to add a new TURN server:
Syntax: zxsuite Team iceServer add {turn:turn.example.com:3478?transport=udp} [attr1 value1 [attr2 value2...]] PARAMETER LIST NAME TYPE EXPECTED VALUES url(M) String turn:turn.example.com:3478?transport=udp username(O) String myuser credential(O) String mysecretkey account(O) String user@example.com cos(O) String default (M) == mandatory parameter, (O) == optional parameter Usage example: zxsuite Team iceserver add turn:turn.example.com credential mysecret username myuser zxsuite Team iceserver add turn:turn.example.com credential mysecret username myuser account testaccount@example.com
Multiple TURN servers can be added to handle different users or Classes of Service (defined through the user
and cos
optional parameters of the command above).
On the TURN server side, it is strongly recommended to have a single user, authenticated with a username and secret key, for ease-of-use reasons as a 1:1 correspondence between Zimbra users and TURN users is not necessary.