See section on "ITU-T Q-Series Recommendations" for ITU-T recommendations
on the Intelligent Network, including:
Q.1200: Q.120x recommendations structure
Q.1201: Principles of IN architecture (= I.312)
Q.1202: Service plane architecture (= I.328)
Q.1203: Global functional plane architecture (= I.329)
Q.1204: Distributed functional plane architecture
Q.1205: Physical plane architecture
Q.1208: General aspects of IN application protocol
Q.1210: Q.121x recommendations structure
Q.1211: Introduction to CS-1
Q.1213: Global functional plane for CS-1
Q.1214: Distributed functional plane for CS-1
Q.1215: Physical plane for CS-1
Q.1218: Interface Recommendation for CS-1
Q.1219: User's Guide for CS-1
Q.1220: Q.122x recommendations structure
Q.1221: Introduction to CS-2
Q.1223: Global functional plane for CS-2
Q.1224: Distributed functional plane for CS-2
Q.1225: Physical plane for CS-2
Q.1228: Interface Recommendation for CS-2
Q.1229: User's Guide for CS-2
Q.1290: Glossary of terms