TR NWT 000031 : ISSUE 4

1 Introduction
1.1 Definition
1.2 Reason For Reissue
1.3 High-Level Feature Description
1.4 Requirements Terminology
2 User Perspective
3 Feature Requirements
3.1 Feature Operations
3.1.1 Main Feature Operations
3.1.2 Error Treatment and Abnormal Events
3.2 Internal Call Processing Controls
3.2.1 Connections
3.2.2 Class of Service
3.2.3 Code Interpretation
3.2.4 Overload
3.3 Signaling
3.3.1 Customer Loop
3.3.2 CPE Signaling
3.3.2.1 CPE-to-SPCS Address Signaling
3.3.2.2 SPCS-to-CPE Information Signaling
3.3.3 Intersystem Alternating Current Signaling
3.3.3.1 Common Channel Signaling
3.3.4 Operator Services Signaling
3.4 Transmission
3.5 Administration
3.5.1 Installation, Modification, or Retrofit
3.5.2 Person-SPCS Interface
3.5.3 Traffic Measurements
3.5.4 Maintenance Measurements
3.5.5 Billing
3.5.6 Quantities
3.5.7 Data Items and Usage
3.6 Maintenance
3.6.1 Automated System Maintenance
3.6.2 Manual System Maintenance
3.6.3 Input/Output Messages
3.6.4 Customer Tests
3.7 Performance
3.8 Interactions
3.9 Limitations and Restrictions
3.9.1 Unusual Feature Operation
3.9.2 Restriction Capability
3.10 Timing and Tolerances
References
Glossary

Calling Number Delivery (CND), a CLASS feature, is a service intended for residential and small business telephone customers. It allows called Customer Premises Equipment (CPR) to receive a calling party's Directory Number (DN) and the data and time of the call during the ringing cycle. This TR defines Bellcore's view on generic requirements for CND for resindental and small business customers. It replaces TR TSY 000031, CLASS Feature: Calling Number Delivery, Issue 3, January 1990.