These HITC members sell and support software that receives data from telephone calls. Typically, your employee, such as a home health aide, nurse or therapist, calls an 800 number from a patient’s home. The computer uses Caller ID to detect that the call is actually coming from that address and compares the time, date, and call-in location with the company visit schedule. The employee enters a personal identification number and then completes the visit. Afterward, he or she places another call and records activities performed, using the telephone keypad. Some companies offer their telephony software as a standalone product. Others sell it only to users of their back office billing application.