WhatsApp can’t call landline numbers so if you think you’re calling one with WhatsApp you may actually be making a regular phone call via your device’s default phone app by mistake. Alternatively you can call yourself with another device to check the video quality. The Skype app does not have a built in video test, but you can use you devices Camera app to preview how you will look by setting the camera to self-facing. How do I test Skype video calls on Android?

Echo/Sound Test also checks your connection.

If you don’t hear your own recording, there could be an issue with your microphone or settings.

Start the call and speak into the mic after the beep.

Log in to Skype and select the Contacts tab, then choose Echo/Test Sound Service.Learn more about Skype Numbers or get a Skype Number now. Yes, with a Skype Number, people can call you from a landline or mobile, and you can pick up the call on Skype.

The Echo assistant will answer and guide you through the process of testing your microphone and sound.To start the call, select the audio button.Click the Echo / Sound Test Service contact.In Skype, search for the “Echo / Sound Test Service” contact.

What is skype echo sound test service