| +1(868)628-0281, ext. 234 | Monday, Wednesday, Friday: 11am - 7pm
Banner image with page title:CVAS Guides for Deaf Users

To become a CVAS user, all you need is the CVAS app, which is available for mobile devices in the Google Play and Apple Store, as well as, for Windows and Mac computers.

We have set out below three step by step guides that explain what you will do to get you up and running, and using CVAS, as follows:

Note, please read the first two guides before downloading the app and registering for CVAS.

Guide for Downloading and Installing CVAS

CVAS is accessible on mobile devices and computers. The following outlines how to locate and install the version of the CVAS app most suitable to you.

Step 1: Download the CVAS app

On your mobile device, click on the appropriate image below to go directly to the app on either the Google Play or Apple App Store.

Image link to the CVAS app on the Apple App Store. CLick to go to CVAS on the Apple App Store
Image link to the CVAS app on the Google Play Store. CLick to go to CVAS on the Google Play Store

Locate the app by entering CVAS in the search box, clicking on search and looking for the CVAS logo above.

CLICK on OPEN and once the download is complete, click on install and the app will be loaded onto you mobile. Click on the logo on your mobile to open the app.

Step 2: Open the CVAS app on your mobile phone

When the app is first opened you will be presented with the User Agreement. Click on "Accept".

Image of the first screen displayed when CVAS app is opened.

The following screen appears.

Image of the first screen displayed when CVAS app is opened.

You have downloaded and installed CVAS on your mobile phone. You are now ready to register for CVAS, the steps for which are explained in the Guide below.

CVAS Registration Guide

Step 1: Review the steps below

This guide explains the registration process, which you do as soon as you download and install the CVAS app. You register for CVAS by completing the four forms and following the instructions to complete them included below.

To help you to get up and running on CVAS as quickly as possible, we can pre-register you. Please send an email to the Help Desk at with your first and last name, a username and password, and your email address and smart phone number. You will then receive a return email that will outline the next steps to complete your registration, which are also below. The email will also include the Terms and Conditions for the use of CVAS, which would have been accepted on your behalf.

If you do not wish to be registered, please go to Step 2.

If you ask to be pre-registered, you will receive an email as outlined in Step 6 below. You will then need to complete the last step 7 and then move on to Guide 3. If you prefer to change your password to one that will not be known to CVAS staff, once you have completed the CVAS registration, you click on Change Password in the CVAS app login screen and follow the instructions in the app.

Step 2: Complete the User Signup Form

When you click on the "Create New Deaf User" button in the CVAS app, the screen shown below will appear. On the form:

  1. Enter a User Name of your choice. The User Name must be at least 6 characters long and cannot contain spaces or any special characters. Then click on “CHECK NAME” to verify the availability of your User Name.
  2. Enter the password of your choice and click on “SHOW PASSWORD” to ensure that you have entered your password correctly.
  3. You will then be able to click “NEXT” to proceed to the second form.

Image of the first registration screen which requests a username, that must be checked for its availbility and a corresponding password.

Step 3: Create Your User Profile

Complete the form below to create your unique user profile. Note for:

  1. Address Line 2 (This input field can be left blank)
  2. State/County: Enter N/A
  3. Postal Code: Leave Blank
  4. Country Code: Enter TT
  5. PSTN Number: Enter the 10-digit mobile phone number, starting with the Trinidad and Tobago area code, 868, for the phone onto which you will download and install the CVAS app.

Once you have entered the requested information, NEXT will become clickable. When you click on NEXT, you will be taken to Step 4 Subscriptions.

Image of the second registration screen which requests the first name, last name, email, address, city, state/county, postal code, country code and PSTN number of the user.

Step 4: Subscriptions

Do not enter anything on the screen below. CVAS does not have any subscription services at this time.

When you click on NEXT, you will be taken to Step 5: Terms and Conditions.

Image of the third registration screen which shows subscriptions. CVAS does not have subscriptions.

Step 5: Terms and Conditions

Please read the Terms and Conditions of Use of CVAS in their entirety and then check the Accept Terms and Conditions box to accept them. CREATE USER will then become clickable.

Image of the fourth registration screen containing the User Terms and Conditions.

Click CREATE USER and you will see the message below. Select Done to exit to the Login screen(iPhone).

Image of the fifth registration screen displaying the success message received on successfully submitting the registration form.

Step 6: Check Your Email

SEARCH your Inbox, Promotions, Junk Mail or Spam folder for an email from “”, with the subject New User Verification. If you wish to verify the validity of the email, please contact

If the email is not in your Inbox or Promotions folder, it will be in your Junk Mail or Spam folder. Drag the message into your Inbox and it will read:

Image of the email received from CVAS containing the link to complete the final step of the registration process.

In the email, you will CLICK on the link above, which will take you to the final stage of the registration process.

Step 7: Complete the Registration Process

Having clicked on “Click here to continue the setup process”, you will see the screen below.

Image of the final screen in the registration process containing a congratulatory message and confirmation of the successful creation of the user account.

Click on START USING THE SERVICE in the message above and your registration will be complete! You will be taken to the CVAS home page in your web browser, shown below.

There you can click on the menu link to the user guide at the top of the screen to continue to Guide 3, Using CVAS.

You have now completed the CVAS app download and install and registration guides. If you wish to register and start using CVAS now, click the link below. Then return to read the Guide to using CVAS below.

Guide to Using CVAS

You have completed the preview of the download and installation of the CVAS app and the registration process. Use the steps outlined below to preview how to use the service.

The CVAS app is designed to stay active on your phone, which will not affect battery usage. Regardless of whether you are logged in (active) or not on the CVAS app, you will receive calls from the agents. However, if you are logged out, follow the steps below to log in to CVAS app.

Step 1: Login

Click on the CVAS icon on your mobile phone and the following screen will appear:

Image of the first screen of the CVAS displayed with CVAS selected as the Network Provider.

Enter your username and password in the corresponding fields above. Click on Login and the screen below will appear.

Image of the Contacts Screen, the first screen visible when logged in.

At the base of the screen, you will see five buttons, which you will use as follows:

  1. History - Your call history.
  2. Dialpad - Where you dial numbers to make a call.
  3. Contacts - You can access the contacts on your mobile phone here.
  4. Chat - All the CVAS text messages you receive can be found here.
  5. More Options - You will find these options: Settings, Resources and Self-preview.

Step 2: Making a Call

Select Dialpad on the screen in Step 1 and the screen below will appear.

Image of the CVAS dialpad

ENTER the seven digits of the number of the party you wish to call on the dialpad. The number you dial will appear in the Name or Number box at the top of the dialpad.

To speak with a CVAS agent and for the agent, click on the video button, which is on the left hand side of the dialpad.

If your mobile phone’s key board appears, click on return on the bottom right hand side of the key board to remove it.

Step 3: Speaking with your hearing party

After the agent connects to the person you wish to speak with, simply sign to the agent what you would say if you were speaking to the person directly. The agent will then relay to the person what you sign, as if they are you. You will see the screen below on your mobile phone.

Image of the in-call view of the agent and the caller during a video call.

Remember, CVAS is dependent on the quality of the Internet service to you and the agent. This may have a direct impact on the service and can cause interruptions. Should that happen, please call back. If you do not reach the same agent, you can ask to be transferred to the agent you were interacting with.

Step 4: Ending your call

To end your call, click on the black part of the screen next to where you see your picture in the screen above and the screen below will appear.

Image of the call options that appear when screen is tapped during a call.

Click on the red button to end the call.

Step 5: Receiving a call from an agent

When an agent calls, you will see the screen below.

Image of the screen that appears when there is an incoming call.

To answer the call, click on the green video call (accept) button. You will then be in a video call with the agent, who will relay what the hearing person wishes to say to you. Once your call is competed, follow the how to end a call step in 4 above.

Step 6: Receiving video mail from an agent

Should an agent call and is told by your mobile phone that you are not available, they will send you a video mail, which will be sent to your email address. The email will come from with the subject line, "You have a message". Click on the attachment in the email to view your video message.

Note, the email may be sent to your Spam or Junk mail folder. If you find an email from, please drag it to your inbox, where the attachment can be accessed.

Step 7: Logging out of CVAS

To receive calls from hearing parties, do not log out of the app. It will run in the backround and not affect your battery life. However, should you need to log out of the CVAS app, click on More at the bottom of the screen below and a dropdown screen will appear as shown.

Image of the menu options when More is selected.

Select the Settings button in the screen above and a dropdown menu appears as in the screen below.

Configuration screen on Apple device
Configuration screen on Android device
Image of the settings menu where user can log out.
Image of the settings menu where user can log out.

Click on Logout and a dialogue box will appear asking you to select No or Yes. Click on Yes and you will be logged out of the CVAS app and returned to the CVAS Login screen.

You have now completed the Guide to using the CVAS app.

Step 8 – If you forget your password

If you need a new password, do not use the Change Password link that you will see on the Log in page of the CVAS app. Instead, send an email to and ask for a temporary password to be provided to you.

Step 9 – If you want to change your password

Click on Change Password on the CVAS app Log in screen. Note, you must know your old password to use this link.

You’ve read the Guides? You’re ready to register? Download and install the CVAS app, register in the app and start to use the service. Click on the link below to start the process.

Welcome to CVAS - we look forward to being of service to you!

CTU logo in white against a blue background

Caribbean Telecommunications Union

: 4 Mary Street, St. Clair, Port of Spain, Trinidad and Tobago

: +1(868)628-0281, ext. 234


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