SR 3355 : ISSUE 1

1 Introduction
    1.1 Purpose and Scope
    1.2 Background
    1.3 Terminal Equipment Guidelines Terminology
    1.4 Network Terminology
    1.5 Relationship to Other Bellcore Documents
    1.6 Use of Terminology With Regard to Supplementary
          Services
    1.7 Document Organization
2 Basic Access S/T Interface
    2.1 Terminal Modes
    2.2 Generic Principles for VTA Terminal
3 Basic Access Conventional Analog R-Interface
4 Conversion Functions for Basic Calls
    4.1 Overview
    4.2 Origination Treatment
          4.2.1 Call Request (Off-hook)
          4.2.2 CALL PROCeeding (Network to Terminal)
          4.2.3 PROGress (Network to Terminal)
                  4.2.3.1 Notification of Interworking
                  4.2.3.2 Notification of Delay
                  4.2.3.3 Call Rejection
          4.2.4 ALERTing (Network to Terminal)
          4.2.5 CONNect (Network to Terminal)
    4.3 Terminating Treatment
          4.3.1 SETUP (Network to Terminal)
          4.3.2 Call Confirmation
                  4.3.2.1 CALL PROCeeding (Terminal to
                            Network)
                  4.3.2.2 ALERTing (Terminal to Network)
                  4.3.2.3 Call Answered (Off-hook)
          4.3.3 DISConnect or RELease (Terminal to Network)
    4.4 Call Clearing
          4.4.1 Clearing Initiated by the User
          4.4.2 Clearing Initiated by the SPCS
    4.5 Error Treatment
5 Conversion Functions for Network Vertical Services
    5.1 Overview
    5.2 Network Vertical Services
          5.2.1 Call Waiting
          5.2.2 Calling Number Delivery
                  5.2.2.1 Activation and Deactivation
                  5.2.2.2 Delivery of Calling Number
                            Information
          5.2.3 Calling Number Delivery Blocking
          5.2.4 Call Forwarding
          5.2.5 Three-Way Calling
                  5.2.5.1 Adding a Call to Form a Three-Way
                            Conference
                  5.2.5.2 Disconnecting From the Conference
                  5.2.5.3 Dropping the Last Added Call
                            From the Conference
          5.2.6 Calling Name Delivery
          5.2.7 Calling Name Delivery Blocking
          5.2.8 Automatic Callback
          5.2.9 Message Waiting Indicator
          5.2.10 Series Completion
          5.2.11 Other Services
References
Glossary
Figures
1-1 An Interface Configuration
1-2 Customer's Arrangement with a Voice Terminal Adapter