Step 1 - Download the app
If you're an iPhone user, search the App Store for "Access 4 Communicator", or click this button to download the app
If you're an Android user, search the Play Store for "Access4 Communicator", or click this button to download the app
Special note: If you're searching for the app, there are several other apps that look similar, be sure to download the one with Access 4 in the name.
Step 2 - Sign into the app
IMPORTANT iPhone/Android by default will prompt you and ask if apps can send you notifications and/or use the microphone/camera. You must allow these because notifications are necessary to make the app ring on incoming calls, and access to the microphone/camera is necessary for making voice and video calls.
A screenshot of the app is shown below. Enter your username & password and then be sure to choose "Remember Password" before tapping "Sign in".