Telecommunications Telephone Terminal Equipment Caller Identity and Visual Message Waiting Indicator Equipment Performance Requirements




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PN-4078RV

(To be published as TIA/EIA-777A)



Telecommunications
Telephone Terminal Equipment
Caller Identity and Visual Message Waiting Indicator Equipment Performance Requirements

Formulated under the cognizance of TIA Subcommittee TR-41.3

Analog and Digital Wireline Terminals
With the approval of TIA Engineering Committee TR-41

Telecommunication Equipment Requirements

[This page intentionally left blank.]

    TABLE OF CONTENTS


1 Scope 11

2 Normative References 11

3 Abbreviations, Acronyms, AND definitions 12

3.1 Abbreviations and Acronyms 12

3.2 Definitions 12

4 Technical criteria for cpe 14

4.1 Mandatory, Recommended, and Permissive Criteria 14

5 Type 1 CPE General 14

5.1 Type 1 CPE Functionality 14

5.2 Type 1 Protocol 14

5.2.1 FSK following Power Ringing 14

5.2.2 FSK without Power Ringing 15

5.2.3 Time-out and Resetting Capabilities 15

5.2.4 Type 1 Message Preamble 16

5.2.4.1 Channel Seizure Signal 16

5.2.4.2 Mark Signal 16

5.2.4.3 Binary & ASCII encoding 16

5.2.5 Message Formats 16

5.2.5.1 Message Types 17

5.2.5.2 Message Length 17

5.2.5.3 SDMF Message Type 17

5.2.5.3.1 SDMF Calling Number Parameter 17

5.2.5.3.2 SDMF Reason for Absence of Calling Number 18

5.2.5.4 MDMF Message Format 19

5.2.5.4.1 Parameter Types 19

5.2.5.4.2 Parameter Length 19

5.2.5.4.3 Parameter Field Definitions 19

5.2.5.4.3.1 MDMF Date and Time Parameter 19

5.2.5.4.3.2 MDMF Calling Number Parameter 20

5.2.5.4.3.3 MDMF Dialable Directory Number Parameter 21

5.2.5.4.3.4 MDMF Reason for Absence of Directory Number Parameter 22

5.2.5.4.3.5 MDMF Calling Name Parameter 22

5.2.5.4.3.6 MDMF Reason for Absence of Name Parameter 23

5.2.5.4.3.7 MDMF Call Qualifier Parameter 23

5.2.5.4.3.8 Reason for Redirection Parameter (Reserved) 24

5.2.5.5 Visual Message Waiting Indicator 24

5.2.5.5.1 SDMF VMWI Parameter 24

5.2.5.5.2 MDMF VMWI Parameter 24

5.2.5.6 Mark Bits 25

5.2.5.7 Checksum 25

5.2.5.8 Markout 25

5.2.6 Exception Handling 25

5.2.6.1 Checksum Error 25

5.2.6.2 No Data Detected 26

5.2.6.3 Out of Range data 26

5.3 Physical Line Interface 26

5.3.1 FSK Signal Properties 26

5.3.1.1 Frequency 26

5.3.1.2 Signal Levels 26

5.3.1.3 Type 1 FSK Signal Level Detection Threshold 26

5.3.1.4 FSK Twist 27

5.3.1.5 Baud Rate 27

5.3.2 Impairments 27

5.3.2.1 Single Tone Metallic Noise during FSK 27

5.3.2.2 Single Tone Metallic Noise before and after FSK 28

5.3.2.3 Type 1 - Echo Noise 28

5.3.2.4 Signal Dropouts During Channel Seizure 28

5.3.2.5 Immunity To Open Switching Intervals (OSIs) And Line Reversals 29

5.3.2.6 TYPE 1 OSI and Line Reversal Immunity 29

5.3.3 Type 1 DC operating Conditions 29

5.3.4 Test Matrix for the FSK Signal Properties, Including Multiple Impairments 29

6 Type 2 Protocol 36

6.1 General 36

6.1.1 Type 2 CPE 36

6.2 Functionality 37

6.2.1 Type 2 Call Waiting Caller ID 37

6.2.2 CAS Detection 37

6.2.2.1 CAS Detector Performance Recommendations 37

6.2.2.2 CAS Recognition 38

6.2.2.2.1 CAS Recognition Parameters 38

6.2.2.2.2 CAS Recognition Test Matrix 38

6.2.2.3 Talkdown Performance Parameters 42

6.2.2.4 Talkoff Performance Parameters 42

6.2.2.5 CAS Check Muting 43

6.2.3 CAS-ACK Handshake 43

6.2.3.1 Line and CPE States 44

6.2.3.2 CAS-ACK Handshake Protocol 44

6.2.3.3 ACK Signal Generation 46

6.2.3.4 Voicepath Mute Control 46

6.3 Type 2 Mark Signal 46

6.4 Physical Line Interface 47

6.4.1 FSK Signal Properties 47

6.4.1.1 Frequency 47

6.4.1.2 Type 2 FSK Signal Level Detection Threshold 47

6.4.1.3 FSK Twist 47

6.4.1.4 Baud Rate 48

6.4.2 Impairments 48

6.4.2.1 Single Tone Metallic Noise 48

6.4.2.2 Immunity To Open Switching Intervals (OSIs) And Line Reversals 48

6.4.2.3 TYPE 2 OSI and Line Reversal Immunity 48

6.4.3 TYPE 2 DC Operating Range 49

6.4.4 Test Matrix for the FSK Signal Properties, Including Multiple Impairments 49

7 Type 2.5 Protocol 55

7.1 General 55

7.1.1 Type 2.5 CPE 55

7.2 Functionality 56

7.2.1 Type 2.5 Call Waiting Caller ID with Disposition 56

7.3 Type 2.5 Mark Signal 56

7.3.1 CWD Options 56

7.3.1.1 Answer 56

7.3.1.2 Hold 56

7.3.1.2.1 Hold Return 56

7.3.1.2.2 Hold Drop 56

7.3.1.2.3 Conference 56

7.3.1.3 Forward 56

7.3.1.4 Announcement 56

7.3.1.5 Drop 56

7.3.1.6 Conference 57

7.3.1.6.1 Drop First 57

7.3.1.6.2 Drop Last 57

7.3.2 CWD Option Signals 57

7.3.2.1 CWD Flash Signal 57

7.3.2.2 CWD DTMF Signal 57

7.3.2.3 CWD Option Signal Timing 57

7.3.3 Voicepath Mute Control During CWD Option Signaling 58

8 Adjunct Series Impedance requirements 59

8.1 AC Impedance 59

8.2 DC Resistance 59

ANNEX A Informative References 59

ANNEX B Informative Method for RTF inter-CPE Signaling 60

1.1 Inter-CPE Signaling 60

1.1.1 Request-to-Flash Signaling 60

1.1.1.1 Request-to-Flash Signal Generation 60

1.1.1.2 Request-to-Flash Signal Detection and Response 61

ANNEX C Informative Calculations 63

ANNEX D examples of step-like voltage changes 65




LIST OF FIGURES


Figure 1 – Timing for FSK following Power Ringing 15

Figure 2 – SDMF and MDMF Formats 17

Figure 3 - SDMF Calling Number 18

Figure 4 - MDMF Date and Time Parameter 20

Figure 5 - MDMF Calling Number Parameter 21

Figure 6 - DDN Parameter 21

Figure 7 - MDMF Reason for Absence of Directory Number Parameter 22

Figure 8 - MDMF Calling Name Parameter 23

Figure 9 - MDMF Reason for Absence of Name Parameter 23

Figure 10 - MDMF Call Qualifier Parameter 24

Figure 11 - SDMF Visual Message Waiting Indicator Parameter 24

Figure 12 - MDMF Visual Message Waiting Indicator Parameter 25

Figure 13 – CAS-ACK Handshake Diagram 45

Figure 14 - CWD State Diagram 58

Figure 15 - CWD Signaling Timing Diagram 59

Figure 16 - CPE State Generating RTF, Multiple CPE Off-Hook, Successful Synchronized Flash 60

Figure 17 - Line State During RTF, Multiple CPE Off-Hook, Successful Synchronized Flash 61

Figure 18 - Line State During RTF, Single CPE Off-Hook 61

Figure 19 - CPE State Generating RTF, Multiple CPE Off-Hook, And Unsuccessful RTF 61

Figure 20 - Line State During RTF, Multiple CPE Off-Hook, And Unsuccessful RTF 61

Figure 21 - CPE State Detecting & Responding to an RTF, Successful Synchronized Flash 62

Figure 22 - Line State During RTF, Multiple CPE Off-Hook, Successful Synchronized Flash 62

Figure 23 - CPE State Detecting & Responding to an RTF, Unsuccessful RTF 62

Figure 24 - Line State During RTF, Multiple CPE Off-Hook, Unsuccessful RTF 62




LIST OF TABLES

Table 1 - Message Type Values 17

Table 2 - Parameter Type Values 19

Table 3 - Type 1 FSK Positive Twist Acceptance Values 27

Table 4 - Type 1 FSK Negative Twist Acceptance Values 27

Table 5 - Type 1 Single Tone Noise Requirements 28

Table 6 - Group A, Variable Level Sensitivity Tests – Type 1 30

Table 7 - Group B, Twist Test - Nominal Otherwise – Types 1 30

Table 8 - Group C, Combined Impairments - Frequencies, Baud, and Twist – Type 1 30

Table 9 - Group E, Noise Tests – Type 1 (Noise applied during FSK only) 34

Table 10 - Group F, Noise Tests – Type 1 with +10 dB FSK Twist 34

Table 11 - Group G, Noise Tests – Type 1 with –6 dB FSK Twist 35

Table 12 – Group H, Echo Noise Type 1 36

Table 13 - Group I, Send without Ringing-Shall Reject Calls – Type 1 36

Table 14 - CAS Parameter Limits 38

Table 15 - Group 1, CAS Recognition - All Parameters at Nominal Values 39

Table 16 - Group 2, CAS Recognition - One Parameter at a Time at the Extreme Value 39

Table 17 - Group 3, CAS Recognition - Parameters at 90% from Nominal, 75.5 ms CAS 40

Table 18 - Group 3, CAS Recognition - Parameters at 90% from Nominal, 84.5 ms CAS 41

Table 19 - Group 4, CAS Reject Amplitude 41

Table 20 - Type 2 FSK Positive Twist Acceptance Values 47

Table 21 - Type 2 FSK Negative Twist Acceptance Values 47

Table 22 - Type 2 Single Tone Noise Requirements 48

Table 23 - Group A, Variable Level Sensitivity Tests – Type 2 49

Table 24 - Group B, Twist Test - Nominal Otherwise – Type 2 49

Table 25 - Group E, Noise Tests – Type 2 (Noise on during FSK only) 53

Table 26 - Group F, Noise Tests – Type 2 with +10 dB FSK Twist 54

Table 27 - Group G, Noise Tests – Type 2 with –6 dB FSK Twist 54




FOREWORD

(This foreword is not part of this standard.)


This document is a TIA/EIA Telecommunications standard produced by Working Group TR-41.3.1 of Committee TR-41. This standard was developed in accordance with TIA/EIA procedural guidelines, and represents the consensus position of the Working Group and its parent Subcommittee TR-41.3, which served as the formulating group. Some of the requirements contained in this standard are based on information obtained from external organizations, including Telcordia Technologies (formerly Bellcore), Stentor, ANSI, and others. The Working Group gratefully acknowledges the cooperation and support of these external organizations.

Annexes A & B are informative only, and are not considered part of this standard.

Suggestions for improvement of this standard are welcome. They should be sent to:
Telecommunications Industry Association

Engineering Department

Suite 300

2500 Wilson Boulevard

Arlington, VA 22201

TR-41.3.1 Working Group

Technical Contributors Organization Represented

David Stenner (Editor) - Advent Instruments Inc.

James Bress - AST Technology Labs

Trone Bishop - Bell Atlantic

Rick White - CIDCO

Harry Van Zandt - ECS Technologies

Len Bleile (Chair) - Embedded Systems Products

Ken Macdonald - Microtronix Systems Ltd

Philip Ching - Mitel Corp.

James Kemerling - Mx-Com

Greg Neal (Editor) - Notify Corp.

Rick Carey - Radio Shack

Stan Pietrowicz - Telcordia Technologies

Al Baum - Uniden

Steve Whitesell - VTech Innovations

Participants Organization Represented

Don McKinnon - AST Technology Labs

Jim Mazzolini - Casio Communications

David Luneau - ClassCo Inc.

John Riley - DSP Software Engineering

Yuan Fan - Fanstel

Scott Early - InDesign

William Becker - Lucent

Roger Britt, Jerry Freestone - Nortel Networks

Michael Menard - Qwest

Ron Magnuson - Siemens

Yoshi Egami - Sony

Amar Nath Ray - Sprint Local Telephone Division

John Balinski - Telcordia

Julian Lee, Steve Kropp - VTech Engineering

Mabel Au, Mark Yuen - VTech Communications Ltd.

Larry Bell - Wyle Labs

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