The Q. 1238.x series of ITU-T Recommendations defines the Intelligent Network (IN) Application Protocol (INAP) for IN Capability Set 3 (IN CS-3), the INN for IN CS-3 based upon IN CS-2 4.1228 specification (1997) and the general rules for INN provided in ITU-T Q.1208, and is consistent with the scope of IN CS-3 as defined in ITU-T Q.123 1.