GR 205 CORE : ISSUE 1 REV 1

1 Introduction
1.1 Definition
1.2 Background
1.2.1 Prerequistes
1.2.2 Definitions and Assumptions
1.2.3 ISDN Terminal Assumptions
1.3 High-Level Feature Description
1.4 Relationship to TR-TSY-000205
2 User Perspective
3 Feature Requirements
3.1 Feature Operations
3.1.1 Main Feature Operation
3.1.1.1 Originating Treatment
3.1.1.2 Terminating Treatment
3.1.1.3 Bridged Calls
3.1.1.4 ISDN Hold Capability
3.1.2 Other Feature Operation
3.1.2.1 Bridged Call Exclusion
3.1.2.2 Intercom Calling
3.1.2.3 DN-Bridging
3.1.2.4 Abbreviated and Delayed Ringing
3.1.2.5 Station Ringing Transfer (SRT)
3.1.3 Release Treatment
3.1.4 Feature Operation Interworking
3.1.4.1 Interworking Outside the EKTS Group
3.1.4.2 Interworking Within the EKTS Group
3.1.4.2.1 Interworking with Non-ISDN Call Waiting
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
3.3.1.1 Message Structure
3.3.1.1.1 Notification Indicator
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
3.4.1.1 Subscription Parameters per SPCS
3.4.1.2 Subscription Parameters per BBG
3.4.1.3 Subscription Parameters Per Customer Group
3.4.1.4 Subscription Parameters Per Interface
3.4.1.5 Subscription Parameters Per DN/CT
3.4.1.6 Subscription Parameters Per Terminal Service Profile
3.4.1.7 Subscription Parameters Per Terminal Service
             Profile/DN/CT
3.4.2 Traffic Measurements
3.4.3 Maintenance Measurements
3.4.4 Network Management
3.4.5 Billing and Comptroller
3.5 Interactions
3.6 Limitations and Restrictions
3.7 Timing and Tolerances
4 Example - Illustrative EKTS Configuration
5 Line Diagrams
             A.1 Scope and Definition
             A.2 Allowed Data Values
             A.3 Data Dictionary
                     A.3.1 Master Feature List - Feature Activators
                     A.3.2 Master Feature List - Feature Indicators
References
Glossary
List of Tables
Table 3-1 Network to User CALL PROCeeding Message
Table 3-2 User to Network CALL PROCeeding/ALERTing Message
Table 3-3 User to Network CONNect Message
Table 3-4 Network to User CONNect ACKnowledge Message
Table 3-5 Network to User DISConnect/RELease/RELease
             COMplete Message
Table 3-6 Network to User INFOrmation Message
Table 3-7 User to Network INFOrmation Message
Table 3-8 Network to User INFOrmation Message Containing a
             Null Call Reference
Table 3-9 User to Network INFOrmation Message Containing a
             Null Call Reference
Table 3-10 NOTIFY Message
Table 3-11 Network to User SETUP Message
Table 3-12 User to Network SETUP Message
Table 3-13 User to Network HOLD Message
Table 3-14 Network to User HOLD ACKnowledge Message
Table 3-15 Network to User HOLD REJect Message
Table 3-16 KEY HOLD Message
Table 3-17 KEY RELease Message
Table 3-18 KEY SETUP Message
Table 3-19 KEY SETUP ACKnowledge Message
Table 3-20 RETrieve Message
Table 3-21 RETrieve ACKnowledge Message
Table 3-22 RETrieve REJect Message
Table 5-1 [LD1] - Successful Call Origination Message
             Sequence With Bridging
Table 5-2 [LD2] - Successful Call Termination Message
             Sequence With User A Answering the Call

Contains Bellcore's view of proposed generic requirements for the Integrated Services Digital Network (ISDN) Electronic Key Telephone Service.