You sleep with her over the phone? Does the sounds of the other person snoring help you sleep?
Just curious why this would be needed after you are asleep.
To the point, no. You can not extend that amount of time. That is the standard of all phone providers as a measure to prevent calls from running while the phone is off the hook, so to speak.
Just a heads up michaelduran57 this is normal after being on a call for that long. There isn't a way to increase that time but there is a reason it does that. It's fail-safe to help prevent the phone from staying on during an unintentional "pocket dial."