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GR 506 CORE : ISSUE 3

Current

Current

The latest, up-to-date edition.

SIGNALING FOR ANALOG INTERFACES

Published date

12-01-2013

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1 Introduction
  1.1 Reason for Reissue
  1.2 Relation to the ANSI T1.4XX Series of Standards
  1.3 Deleted Interfaces and Features
  1.4 Added Feature
  1.5 Potentially Obsolete Features
  1.6 Document Organization
  1.7 Requirements Terminology
  1.8 Requirement Labelling Conventions
2 General Requirements
  2.1 Network Power Systems
  2.2 Steady-State Power Induction
3 Loop-Start Signalling
  3.1 Direct Current (dc) Supervisory Range
  3.2 Loop-Start Signalling States Produced by an SPCS
  3.3 Loop-Start Signalling States Applied to an SPCS
  3.4 Loop-Start Call States
4 Ground-Start Signalling
  4.1 Dc Supervisory Range
  4.2 Ground-Start Signalling States Produced by an SPCS
  4.3 Ground-Start Signalling States Applied to an SPCS
  4.4 Ground-Start Call States
5 Dial-Tone-First Coin Telephone
  5.1 Dc Supervisory Range
  5.2 DTF Coin Telephone Signalling States Produced by an
      SPCS
  5.3 DTF Coin Telephone States Applied to an SPCS
  5.4 DTF Coin Telephone Call States
  5.5 Coin Detection, Coin Disposal and Coin-Readout
      Control
  5.6 Signals From Operator-Services Systems
6 Two-Party SPCS Interfaces
  6.1 Dc Supervisory Range
  6.2 Two-Party Signalling States Produced by an SPCS
  6.3 Two-Party Signalling States Applied to an SPCS
  6.4 Two-Party Call States
7 Loop Reverse-Battery Signalling - Outgoing Interface
  7.1 Dc Supervisory Range
  7.2 Outgoing, Loop Reverse-Battery Signalling States
      Produced by an SPCS
  7.3 Outgoing, Loop Reverse-Battery Signalling States
      Applied to an SPCS
  7.4 Loop Reverse-Battery Call States
  7.5 SPCS Generated Loop-Open Intervals
8 Loop Reverse-Battery Signalling - Incoming Interface
  8.1 Dc Supervisory Range
  8.2 Incoming, Loop Reverse-Battery Signalling States
      Produced by an SPCS
  8.3 Loop Reverse-Battery Signalling States Applied to an
      Incoming SPCS Interface
  8.4 Loop Reverse-Battery Call States
  8.5 Connecting Equipment Generated Loop-Open Intervals
9 E&M Signalling
  9.1 Type I SPCS E&M Signalling Interface
  9.2 Type II SPCS E&M Signalling Interface
  9.3 E&M Signalling Call States
10 Dc Dial-Pulse Signals
   10.1 Detection of Dial-Pulse Signals From Analog
        Access Lines
   10.2 Detection of Dial-Pulse Signals from Inter-
        Switching-System Analog Transmission Facilities
   10.3 Generation of Dial-Pulse Signals for Application
        to Inter-Switching System Analog Transmission
        Facilities
11 Inter-Switching-System Call Control Signals and
   Procedures
   11.1 Seizure Signal
   11.2 Addressing Control Signals
   11.3 Answer Signal
   11.4 Flash Signal
   11.5 Glare Resolution
12 Hits, Flash Signals and Disconnect Signals
   12.1 Hit Timing
   12.2 Flash Signal Timing
   12.3 Disconnect Signal Timing
   12.4 Dial Pulses During the Communications State
13 Disconnect Procedures
   13.1 Internal SPCS Connections Between Interfaces
   13.2 Release Procedures
   13.3 Disconnect During the Service-Request or Seizure
        Call State
   13.4 Disconnect During the Addressing Call State
   13.5 Disconnect During the Call-Processing Call State
   13.6 Disconnect During the Communication Call State
   13.7 No Disconnect Signal Received Before the Expiration
        of the Timed-Release Interval
14 Alerting Signals
   14.1 Alerting Signals Using Ringing
   14.2 Alerting Signals Using Call-Waiting Tones
15 Dual-Tone Multifrequency (DTMF) Signalling
   15.1 Detection of DTMF Signals from Analog Access Lines
   15.2 Detection of DTMF Signals from Inter-Switching-
        System Transmission Facilities
   15.3 DTMF Access Line Test Receiver
   15.4 Generation of DTMF Signals by an SPCS
16 Multifrequency (MF) Signalling Requirements
   16.1 Detection of MF Signals
   16.2 Generation of MF Signals by an SPCS
17 Call Progress Signals
   17.1 Precise Tone Plan
   17.2 Call Progress Tones
18 Coin-Deposit Signals
   18.1 Signal Parameters
   18.2 Talkdown
   18.3 Talkoff
   18.4 Fraud
   18.5 Suggested Test Guidelines for Coin-Deposit Detectors
19 Multiwink Coin Control Signals
   19.1 Detection of Multiwink Coin Control Signals
   19.2 Interpretation of Multiwink Coin Control Signals
20 Operator Services Systems Requirement
   20.1 Expanded In-Band Signalling
   20.2 Multiwink Coin Control Signals
References
Acronyms
List of Figures
3-1 Network Voltage-Current Characteristics at the
     Network Interface during the Addressing, Call-Processing
     and Communications States Under Normal SPCS Operation
3-2 Network Voltage-Current Characteristics at the Network
     Interface During the Addressing, Call-Processing and
     Communications States during ac Power Outages or SPCS
     Equipment Malfunction
3-3 Network Voltage-Current Characteristics at the Network
     Interface During the Service-Request and Answer States
     Under Normal SPCS Operation
3-4 Network Voltage-Current Characteristics at the Network
     Interface During the Service-Request and Answer States
     During ac Power Outages or SPCS Equipment Malfunction
3-5 Illustration of Two Types of Current Feed Circuits
3-6 SPCS Voltage-Current Characteristics in the Idle State
     at the Moment of a Service Request, in the Service-
     Request State and in the Answer State
3-7 SPCS Voltage-Current Characteristics in the Addressing,
     Call Processing and Communications State
3-8 SPCS Loop Current versus External Resistance
     Characteristic for Adequate Transmission Performance
4-1 SPCS Ring-to-Ground dc Voltage-versus-Ring-Conductor
     Current Characteristics
4-2 Loop Open Test Circuit
4-3 Ground-Start Ring Ground Test Circuit
4-4 SPCS Tip-to-Ground dc Voltage-versus-Tip-Conductor-Current
     Characteristics for Ground-Start Interfaces with
     Ground-Referenced Current Feed
4-5 Addressing State SPCS dc Voltage-Versus-Tip-Conductor-
     Current
4-6 Alerting State SPCS dc Voltage-versus Tip-Conductor
     Current Characteristics for Ground-Start-Interfaces
     with Ground-Referenced Current Feeds
5-1 Network Voltage - Current Characteristics at the Network
     Interface During the Addressing, Call Processing and
     Communications States for DTF Coin-Telephone Interfaces
7-1 Network dc voltage-versus-current characteristics of
     Outgoing, Loop-Reverse Battery Interface Loop Closure
7-2 dc Voltage-versus Current Characteristics of a
     Customer-Installation Switching System (PBX)
8-1 Network Voltage-Versus-Current Characteristics for
     Incoming, Loop Reverse-Battery Interfaces
8-2 SPCS Voltage-Versus-Current Characteristics for
     Incoming, Loop-Reverse-Battery Interfaces
9-1 SPCS Type I E&M Interface
9-2 SPCS Type II E&M Signalling Interface
9-3 E&M Signalling Wiring Configurations
9-4 M and SG Lead Ground Test Circuit
9-5 SB to M Lead Connection Test Circuit - A
9-6 SB to M Lead Connection Test Circuit - B
10-1 Dial Pulse Characteristics
10-2 Customer Installation Equipment Dial-Pulse-Test Circuit
10-3 Customer-Installation Equipment Dial-Pulse Template
10-4 Dial-Pulse Test Circuit
10-5 SPCS Voltage-Versus-Current Characteristics during the
     Make Interval of Loop Dial Pulses
10-6 SPCS Voltage-Versus-Current Characteristics during the
     Make Interval of Battery-and-Ground Dial Pulses
List of Tables
2-1 -48 Volt Power System Voltages
12-1 Flash Response Disabled Timing
12-2 Flash Response Enabled Timing
13-1 Possible Internal SPCS Connections
17-1 Audible Tones Used to Generate Call Progress Signals
18-1 Talkdown Parameters
18-2 Signal Parameter Nominal Values

Presents criteria for the direct current (dc) signals and basic alternating current (ac) signals that a Stored Program Control System (SPCS) applies to analog interfaces.

DevelopmentNote
Supersedes TR NWT 000506. (08/1999) Included in FR SS 01. (01/2012)
DocumentType
Standard
PublisherName
Telcordia Technologies
Status
Current
Supersedes

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