Hold and slide the green phone button to the right to accept the call. Hold and slide the red phone button to the left to decline the call.
If you are on a native call (a call to your normal cell phone number) or already on two softphone calls, any incoming calls do not ring on your phone and instead go to your voicemail.
If the app is in the background, it will automatically come to the foreground so you can handle the call.
If the Softphone app is in the foreground, tap Answer to answer the call.
If the app is in the background, tap Answer when the alert pops up. Make sure that your alert style for the app is set to Alert by going to Settings > Notifications > Midco Softphone.
If your iOS tablet is locked, unlocking your device will answer the call. You can also set your preferences to allow you to answer the call without unlocking the device. Go to your preferences and make sure you have enabled Allow Answer on Lockscreen.