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T.Rodon has an integrated service for sending and receiving text messages and files among groups or individual users. The messaging system supports the following:

  • Text and file exchange
  • Multiple send
  • Status messages
  • Multi-communication gateway (MCGW)
  • Message exchange with PMR through T.Bridge
  • Calls and messages to offline users

For improved security, messaging can take advantage of end-to-end encryption (E2EE). For details, see Using end-to-end encryption for voice and messages.

Text and file exchange

Click the Messaging plugin button in the right pane toolbar. Here you can view the recent chat history, exchange text messages with users and groups or send and receive files.

Select your recipient – a user or a group – in the list on the right.

Type your message in the text field below and click the Send button. The message will immediately appear in the recent messaging history.

Note: it should be noted that messages come to the dispatcher from the groups if he himself is in the group where messages are exchanged or if he listens to the group using the multi-listening function

In the chat history, your own messages are right-aligned; messages from the other party are left-aligned.

To copy or quote a message, right-click it and use the shortcut menu.


The maximum length of a message is 3,000 characters. Note: (should be 10000, issue was added to RM)

To send a file, click the clip icon and select the file. The file will immediately be transferred to the server with an appropriate notification to the recipient. The recipient will see the message with a download icon and a delete icon.

If you send a file to a group, all users in the group receive an incoming message notification and will be able to download the file.


The maximum size of a file to upload cannot exceed 50 megabytes.


If you need confirmation that the other party has received your message, select the Acknowledge check box before sending the message. Acknowledgment has three states:

  • Request
    Check mark with an R symbol. A message has this state when the recipient is offline or the message hasn't arrived yet (due to slow connection).
  • Received
    Check mark. This state shows when the recipient is online and has received the message, but not read it.
  • Read
    Double check mark. This state shows when the recipient has read your message.

Multiple send

To send a message to multiple users:

  • Don't type your message in the edit box. Click the Multiple send button, and a separate Multiple send window with an edit box is shown.
  • Select the recipients by users by moving them to the Selected contacts list on the left. For that, double-click them in the Available contacts list or select them and use the left arrow button.
  • Type your message.
  • Click Send.

After this, the selected users or/and groups receive your message.

Status messages

Status messages are canned short messages for specific situations. Examples of such messages are "OK", "Call me" or "Help, a critical situation". T.Rodon users can receive and send status messages that are configured by the administrator in T.Commander. Each such message has a tag, message text and comment.

In the Messaging plugin view, select the channel or user you need, click the envelope icon and select the necessary message by double-clicking it. The message is sent immediately. Alternatively, in the edit box type the hash (#) symbol followed by the tag of the status message, and click Send. The selected user or group receives the status message.

If you commonly send the same status messages to the same recipients, the quickest way to do it is to create shortcut buttons for these messages in the Favorite PTT view.

Multi-communication gateway

The TASSTA multi-communication gateway (MCGW) is a solution to bridge the TASSTA network communication to email and SMS services. Your server has a global configuration for redirection of messages to email and SMS. However, as an operator, you:

  • Need to provide the remaining settings for email and SMS delivery on a per-user basis (including your own account)
  • May or may not be able to override the configuration options on the server for your own and other people's user accounts (whether you can override them depends on the administrative configurations of individual users)

When MCGW is fully configured, you can use the SMS and Email check boxes in the Messaging plugin view to send duplicates of your messages by SMS and email, respectively.

To set up MCGW for yourself, go to the MCGW page in the configuration settings.

To set up MCGW for another user, right-click that user in the user list and select MCGW channels configuration. Configure the two redirection channels: email and SMS.

Email channel

For MCGW to work through email, both the sender and the recipient must have email addresses. Email settings include the following:

  • Receive settings:
    • Email address of the recipient
  • Send settings: sender settings, required for the recipient to get messages from your email address. Select the Enable user's SMTP server option to enter and edit these settings. The email settings are as follows:
    • Enable user's SMTP server
      Select to override the SMTP configuration defined on the TASSTA server; the following options are relevant only if this is selected.
    • Email address
      The address to use for messaging.
    • SMTP host and port
    • Username and password
    • Use SMTPS and verify certificate
      If the mail service provider uses a self-signed certificate, this option is not selectable. In that case, add the certificate as a trusted certificate and select this option.

SMS channel

The only availalbe setting for the SMS channel is the phone number to send the messages to. The rest of the configuration is performed by the administrator in T.Commander and relies on the use of Twilio. If you are going to use the SMS channel, confirm with your administrator that this integration is set up for the server.

Message exchange with PMR through T.Bridge

Any PMR Network such as TETRA or MOTOTRBO can be extended with the TASSTA solution or become integrated as its complement. Messaging between PMR and TASSTA is possible through T.Bridge. If T.Bridge is configured in your environment, messaging involving both networks (TASSTA and PMR) is done through special allocated groups using regular group calls. The T.Bridge configuration is transparent to you as a T.Flex user – you can text people no matter whether they are in the TASSTA network or in the PMR network.


It doesn't matter to the PMR system what kind of subscriber is on the other end, because multiple bridges are connected through a donor radio (a simple unit such as a car radio). From the radio user's perspective, it looks as if a simple radio from an unknown source has sent a private message. When a radio user replies to a TASSTA user, it looks like a group message on the receiving end.

Calls and messages to offline users

Even if a user is offline, you can still send messages for that user. Once the user comes back online, they will be able to read and reply to those queued messages.

T.Rodon users cannot make calls to offline users, but they can listen to offline calls between users. For that, open the History plugin view and click the down arrow icon for the offline call you need. Then play the offline call.

Email notifications

You can configure T.Rodon to notify you about new email messages. Notifications appear in the Emergency Journal and look like the emergency messages of the Email type, and they include the subject of the email message, date and time when it was received.

Perform the configuration on the Email notifications page in the configuration settings.