58 Pa. Code § 809a.2
The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:
Domain name system—The globally distributed Internet database which maps machine names to IP numbers, and vice versa.
Player device—The device that converts communications from the interactive gaming platform into a human interpretable form and converts human decisions into a communication format understood by the interactive gaming platform. The term includes personal computers, mobile phones, tablets, and the like.
Primary server—First source for Domain Name System data and responses to queries.
Remote access—Any access from outside the interactive gaming system or interactive gaming system network, including access from other networks within the same facility.
Secondary server or redundancy server—A server that shares the same features and capabilities as the primary server serves and acts as a second or substitutive point of contact in case the primary server is unavailable, busy or overloaded.
Stateful protocol—A protocol in which the communication system utilized by the player and the primary or secondary server tracks the state of the communication session.
Stateless protocol—A protocol in which neither the player nor the primary or secondary servers communication systems tracks the state of the communication session.