GR 30 CORE : ISSUE 2

Preface
1 Introduction
  1.1 Requirements Terminology
  1.2 Requirement Labelling Conventions
2 Interface Requirements
  2.1 Overview
  2.2 Data Transmission Protocol
  2.3 Message Assembly Layer
  2.4 Data Link Layer
  2.5 Physical Layer
3 Maintenance
4 Performance
5 Limitations and Restrictions
References
Glossary
List of Figures
Figure 2-1 Data Transmission with Power Ringing
Figure 2-2 Data Transmission without Power Ringing
Figure 2-3 Off-Hook Data Transmission
Figure 2-4 DTMF Receiver Application: Successful Attempt
Figure 2-5 DTMF Receiver Application: Unsuccessful Attempt
Figure 2-6 Single Data Message Format
Figure 2-7 Multiple Data Message Format
Figure 2-8 Single and Multiple Data Message Frame Formats
List of Tables
Table 2-1 Off-Hook Parameter Values
Table 2-2 FSK Modulation Requirements
Table 2-3 CAS Characteristics

Contains generic requirements for transmitting asynchronous voiceband data to Customer Premises Equipment (CPE) from the CPE's serving Stored Program Control Switching System (SPCS). It provides requirements for data transmission in both the off-hook and on-hook states. Data transmission interface applies to a variety of services, such as CLASS calling information delivery features. It introduces new requirements addressing the needs of On-hook Data Transmission without Power Ringing, requirements specific to Integrated Digital Loop Carrier (IDLC) systems that use dynamic timeslot assignment or semi-permanent connections. Also introduced is the new Generic Data Message Format (GDMF). Existing requirements are clarified and expanded.