Desktop On-Call has Auto Launch-map function. Auto Launch-map function searches the Desktop On-Call activate PCs. Desktop On-Call can search the host PC which has this "Response to Ato Launch-map" setting by making check mark.
Select this option in order to activate Greeting Text Chat service.
Desktop On-Call uses 7 ports. If you have confliction of ports number, you can change the ports number by specifying the port field.