TR TSY 000850 : ISSUE 1 SUPP 2

1 INTRODUCTION
1.1 Definition
1.2 Background
1.3 High-Level Feature Description
2 USER PERSPECTIVE
3 FEATURE REQUIREMENTS
3.1 Feature Operations
3.1.1 MAIN FEATURE OPERATIONS
3.1.1.1 ISDN Business Group Dialing Plan (BGDP-I)
3.1.1.2 BGDP-I Dialing Features
3.1.2 OTHER FEATURE OPERATIONS
3.1.3 RELEASE TREATMENT
3.1.4 FEATURE OPERATION INTERWORKING
3.1.5 ERROR TREATMENT AND ABNORMAL EVENTS
3.2 Internal Call-Processing Controls
3.2.1 CLASS OF SERVICE/CONFIGURATION
3.2.2 CODE INTERPRETATION
3.2.3 SCREENING
3.2.4 ROUTING
3.2.5 CHARGE TREATMENT DETERMINATION
3.2.6 OVERLOAD
3.3 Signaling/Message Structure
3.3.1 CUSTOMER SIGNALING/USER-NETWORK INTERFACE
3.3.2 SS7 INTERFACE SIGNALING
3.3.3 INTERWORKING WITH OTHER SIGNALING SYSTEMS
3.3.4 OPERATOR SERVICE SIGNALING
3.4 Administration
3.4.1 SERVICE CHANGES/SUBSCRIPTION PARAMETERS
3.4.2 TRAFFIC MEASUREMENTS
3.4.3 MAINTENANCE MEASUREMENTS
3.4.4 BILLING AND COMPTROLLER
3.5 Interactions
3.6 Limitations And Restrictions
3.7 Timing And Tolerances
4 LINE DIAGRAMS
5 GLOSSARY
6 REFERENCES
LIST OF FIGURES
Figure 1 Request for Intercom-Dialing/Attendant-Access/
              Speed-Dialing/Single-Digit-Dialing Call
Figure 2 Acknowledgement of the Use of Overlap Sending
Figure 3 CALL PROCeeding message content
Figure 4 Request for Private Facility Access or Public
              Network Access
Figure 5 Request for Address Information or Tone Control
Figure 6 Sending Information to the Switch
Figure 7 Request for Automatic Flexible Routing