Nortel DMS-100 Series Istruzioni operative e di manutenzione

297-1001-131

DMS-100 Family

DMS-100 Ringing System

General Description

BASE15 and up Standard 06.01 October 2000

DMS-100 Family

DMS-100 Ringing System

General Description

Publication number: 297-1001-131

Product release: BASE15 and up

Document release: Standard 06.01

Date: October 2000

NORTEL NETWORKS CONFIDENTIAL: The information contained herein is the property of Nortel Networks and is

strictly conﬁdential. Except as expressly authorized in writing by Nortel Networks, the holder shall keep all information contained

herein conﬁdential, shall disclose the information only to its employees with a need to know, and shall protect the information, in

whole or in part, from disclosure and dissemination to third parties with the same degree of care it uses to protect its own

conﬁdential information, but with no less than reasonable care. Except as expressly authorized in writing by Nortel Networks, the

holder is granted no rights to use the information contained herein.

Nortel Networks, the Nortel Networks logo, the Globemark, How the World Shares Ideas, and Uniﬁed Networks are trademarks of

Nortel Networks.

DMS-100 Family DMS-100 Ringing System BASE15 and up

iii

Publication history

October 2000 BASE15 Standard 06.01

• Added Universal Edge 9000 (UEN) ringing information.

March 2000 BASE14 Standard 05.01

• Added United Kingdom ringing conﬁguration changes

September 1999

BASE12 Standard 04.04

• added a ringing generator conﬁguration change procedure for single line

concentrating module conﬁgurations

August 1999 BASE12 Standard 04.03

• changed description of Japan ringing type C3D from feature AU3458

• included an illustration of United Kingdom distinctive ringing cadences

• added a ringing generator conﬁguration change procedure

297-1001-131 Standard 06.01 October 2000

July 1998 BASE08 Standard 04.02

• added description of United Kingdom ringing and a limit on Distinctive

Ringing Enhancements

August 1997 BASE08 Standard 04.01

• added C3C distinctive ringing pattern information for Malaysia and

Australia from feature AR2137

• updated description of revertive ringing, noting that revertive ringing is not

supported for FSR lines

August 1996 BCS36 Standard 03.05 incorporated editorial changes

August 1995 BCS36 Standard 03.04 incorporated editorial changes

April 1995 BCS36 Standard 03.03

• added note in chapter 1 for setting ofﬁce parameters

IMMEDIATE_RING_ENABLE and

ALLOW_RINGING_ON_TIP_SIDE with regard to immediate ringing

functionality.

• added information about response to the QUERYPM command at the

MAP terminal for LCMs when in no-display mode. The switch provides

operating company personnel the status of the ringing generators in a

posted LCM.

December 1993

BCS36 Standard 03.02

• incorporated editorial changes

• removed low-level software descriptions of ringing functionality

DMS-100 Family DMS-100 Ringing System BASE15 and up

October 1993 BCS36 Preliminary 03.01

• rearranged chapters

• incorporated technical and editorial changes

• updated section on LCMs in chapter 3.

March 1991 BCS32 Standard 02.01

• included streamline information

• converted document to new format

September 1990

BCS31 Standard 01.07

• added NT2X27AE ringing generator interface (RGI) to the list of RGIs in

the Line Module/Remote Line Module description.

• added statement indicating that an NT2X27AB is required when using

CODED C30 ringing and an NT2X27AA is required when using CODED

C ringing.

DMS-100 Ringing System

vii

Contents

About this document xi

When to use this document xi

How to check the version and issue of this document xi

References in this document xi

What precautionary messages mean xii

How commands, parameters, and responses are represented xiii

Input prompt (>) xiii

Commands and fixed parameters xiii

Variables xiii

Responses xiv

1 DMS-100 ringing overview 1-1

Introduction 1-1

Normal and immediate ringing 1-2

ANI and coin functions 1-5

Types of ringing 1-5

Frequency selective ringing 1-5

Superimposed ringing 1-9

Coded ringing 1-15

Distinctive ringing 1-20

Ringing characteristics 1-32

Provisioning ringing generators 1-39

Ringer configurations 1-39

Audible ring back signal 1-41

Ringing in the UEN 1-42

2 Ringing in Series I peripherals 2-1

Ringing types supported by LM and RLM 2-1

LM and RLM ringing configuration 2-1

LM and RLM ringing hardware 2-2

Ring generator interface 2-2

Line module power converter 2-3

Ring multiplexer 2-3

Ring bus 2-3

LM and RLM ringing process 2-3

LM and RLM processors associated with ringing 2-4

SP and RGI interactions 2-5

Ringing takeover 2-6

Ringing take back 2-7

viii Contents

297-1001-131 Standard 06.01 October 2000

Ringing generator capacity 2-8

Ringing generator takeover and take back 2-9

LM and RLM ringing generator parameters 2-9

3 Ringing in Series II peripherals 3-1

Ringing in the subscriber carrier module 3-1

SCM-100U 3-1

SCM-100U/RCU ringing configuration 3-2

Ringing hardware 3-3

SCM-100R 3-5

SCM-100R/RCT ringing configuration 3-5

Ringing hardware 3-7

SCM-100R ringing hardware 3-7

RCT ringing hardware 3-8

Ringing generator capacity 3-9

Ringing generator takeover 3-9

SCM-100S 3-9

Ringing types supported by SCM-100S 3-9

SCM-100S ringing configuration 3-9

SCM-100S ringing hardware 3-10

RCS hardware 3-11

Ringing generator takeover 3-11

LCM ringing functional description 3-11

Ringing generator capacity 3-14

Types of ringing supported 3-14

Ringing configuration 3-14

Detailed ringing schematic 3-17

Ringing signals 3-19

ANI/coin signals 3-21

Ringing process 3-22

Ringing synchronization task 3-22

Ringing generator output zero-crossing detection 3-22

Ringing schedule task 3-22

Ringing and ANI/coin messaging 3-23

Ringing sequence flowchart 3-24

Ringing generator configuration change procedure 3-26

Dual LCM configuration 3-26

Single LCM configuration 3-37

Ringing in the Universal Edge 9000 3-45

Ringing in the Remote Line Concentrating Module 3-47

Ringing in the Outside Plant Module and OPAC 3-47

Ringing in the Remote Switching Center 3-47

4 Administration of DMS ringing 4-1

Assigning ringing to line modules 4-1

Assigning ringing type to PM 4-1

Ringing generators 4-2

Ringing generator interface 4-2

Line cards 4-2

Table LMRNG 4-3

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