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

Contains Bellcore's proposed generic requirements for dial-access features in an Integrated Services Digital Network (ISDN) Basic Business Group. Includes descriptions of the following ISDN dial-access features: business group dialling plan, critical interdigital timing for dialling plan, abbreviated dialling, dial access to private facilities, dial access to automatic flexible routing, dial access to public facilities, customer access treatment code restrictions, code restriction and diversion, manual/direct connection, business group automatic identified outward dialling, business group direct outward dialling, and business group direct inward dialling.