When we are busy trying to answer multiple phone calls is less manageable than multiple text threads. Or when we are too busy to answer the MAIN LINE (not user extension), text messages are much easier to manage than voice mail. We would really appreciate SMS based responses versus voicemail. And an automated text for a missed call would really help. It could simply say, "Business Name, sorry we cannot answer the phone, but how may we help you?" and the SMS thread would be initiated.