The Q.1238.x series of ITU-T Recommendations defines the Intelligent Network (IN) Application Protocol (NAP) for IN Capability Set 3 (IN CS-3), the INAP for IN CS-3 based upon IN CS-2 4.1228 and 4.1224 specifications (1997) and the general rules for INAP provided in ITü-T 4.1208, and is consistent with the scope of IN CS-3 as defined in ITU-T 4.123 1.