NEC NEAX2000 IVS2 User Manual

ND-70923 (E)

STOCK # 151992

Q-SIG System Manual

ISSUE 1

JULY, 2000

NEC America, Inc.

LIABILITY DISCLAIMER

NEC America, Inc. reserves the right to change the specifications, functions, or features, at any time, without notice.

NEC America, Inc. has prepared this document for use by its employees and custome rs. The information contained herein is the property of NEC America, Inc. and shall not be reproduced without prior written approval from NEC America, Inc.

NEAX and D

term

are registered trademarks of NEC Corporation.

NEC America, Inc.

Printed in U.S.A.

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Q-SIG System Manual

ISSUE No.

Revision Sheet 1/1

ND-70923 (E)

NEAX2000 IVS

Q-SIG System Manual

Page

LIST OF FIGURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

LIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

PURPOSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

OUTLINE OF THIS MANUAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

REFERENCE MANUALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

CHAPTER 1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SYSTEM OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Physical Interface 30DTI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Physical Interface 24DTI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Interworking with Other Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SYSTEM CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

30DTI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

24DTI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

PLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

CARD NAME AND FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SYSTEM CAPACITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SYSTEM CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Time Slot Assignment Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Time Slot Allocation for DTI/DCH Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SERVICE FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Connected Destination Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Transit Counter Relaying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

CHAPTER 2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

STATIC ELECTRICITY GUARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

REQUIRED EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Mounting DTI and DCH Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

MOUNTING CONN CARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

SELECTION OF PLO IN MP CARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

DTI CABLE CONNECTION VIA MDF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

DTI CABLE CONNECTION VIA CONN CARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Page i

TABLE OF CONTENTS

Page

CHAPTER 3 SYSTEM DATA PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

HOW TO READ THIS CHAPTER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

DTI ASSIGNMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

DCH ASSIGNMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

TANDEM CONNECTION ASSIGNMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

CONNECTED DESTINATION INDICATION ASSIGNMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

CHAPTER 4 CIRCUIT CARD INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

HOW TO READ THIS CHAPTER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

MOUNTING LOCATION OF CIRCUIT CARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

LIST OF REQUIRED CIRCUIT CARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

PN-CP14 (MP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

PN-30DTC-A (DTI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

PN-24DTA-C (DTI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

PN-SC01 (DCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

PZ-M542 (CONN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

PZ-M557 (CONN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Page ii ND-70923 (E), Issue 1.0

NEAX2000 IVS2 Q-SIG System Manual

LIST OF FIGURES

Figure Title Page

Figure 1-1 System Outline of Q-SIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 1-2 Physical Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 1-3 Physical Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 1-4 Interworking with Other Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 1-5 System Configuration of Q-SIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 1-6 Clock Supply Route Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 1-7 Accommodation of DTI/DCH/ICH/BRT/PRT into TDSW . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 1-8 Time Slot Allocation for DTI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 1-9 Connected Destination Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 1-10 Transit Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 2-1 Static Electricity Guard (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 2-2 Installation Procedure for Q-SIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 2-3 Cable Connection via MDF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 2-4 Location of the AP Slots and the LTC Connectors for DTI . . . . . . . . . . . . . . . . . . . . . 27

Figure 2-5 Example of MDF Cross Connection for DTI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 2-6 Cable Connection via the CONN Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 2-7 Example of Coaxial Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 4-1 Mounting Location of Circuit Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Page iii

LIST OF TABLES

Table Title Page

Table 1-1 Q-SIG Card Name and Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 1-2 System Capacity for Q-SIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 2-1 Required Equipment for Q-SIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 4-1 List of Required Circuit Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Page iv ND-70923 (E), Issue 1.0

NEAX2000 IVS2 Q-SIG System Manual

INTRODUCTION

Purpose

INTRODUCTION

PURPOSE

This manual describes the hardware installation and programming procedure for the Q-SIG System on the NEAX2000 IVS2.

OUTLINE OF THIS MANUAL

This manual consists of the following chapters:

CHAPTER 1 GENERAL INFORMATION

This chapter explains the Q-SIG system outline, system configuration, the name and functions of circuit cards required, system capacity, system conditions, and available service features.

CHAPTER 2 INSTALLATION

This chapter ex plains the hardw are installation procedure to p rovide Q-SIG inter face on the PB X.

CHAPTER 3 SYSTEM DATA PROGRAMMING

This chapter explains the programming procedure to provide Q-SIG feature on the PBX.

CHAPTER 4 CIRCUIT CARD INFORMATION

This chapter explains the mounting location, the meaning of lamp indications, and the method of switch settings of each circuit card for the Q-SIG.

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0 Pa ge 1

INTRODUCTION

Reference Manuals

REFERENCE MANUALS

Refe r to the follo wing manuals during installation:

Installation Procedure Manual: Describes the installation procedure of the PBX system.

Command Manual: Describes Customer Administration Terminal (CAT)

operation, command function and setting data required for programming the system, and Resident System Program.

Office Data Programming Manual: Contains the Customer Specif ication Sheet and Office Data

Programming Sheet.

Page 2 ND-70923 (E), Issue 1.0

NEAX2000 IVS2 Q-SIG System Manual

CHAPTER 1

GENERAL INFORMATION

This chapter explains the Q-SIG system outline, system configuration, the name and functions of circuit cards required, system capacity, system conditions, and available service features.

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Page 3

CHAPTER 1 GENERAL INFORMATION

System Outline

SYSTEM OUTLINE

Summary

This feature allows th e PBX to provide basic conne ction service for interfaci ng with the other PBX by using Layer 3 protocol which conforms to ETS 300 172. ETS 300 172 is standardized for private telecommunication network as Inter-exchange signaling protocol for circuit mode basic services by European Telecommunication Standards Institute (ETSI). The Q-SIG protocol creates Layer 3 messages between Q reference points expected as conceptual point for interoffice signalling.

Figure 1-1 System Outline of Q-SIG

PBX

Call Control

Protocol Control

Data Link Layer

Physical Layer

DTI

Q-reference point

Layer 2

Layer 3

NOTE

Layer 1

NOTE: Conforming to Q921-a (PBX-PBX Interface)

PBX

Call Control

DTI

Protocol Control

DTI

Data Link Layer

Physical Layer

Page 4 ND-70923 (E), Issue 1.0

NEAX2000 IVS2 Q-SIG System Manual

CHAPTER 1 GENERAL INFORMATION

System Outline

Physical Interface 30DTI

On the Q-SIG system, a 2 Mbps digital interface is used for the interf ace trunk. A D Channel Handler is required for each physical interface. A single data link channel can control a maximum of 30 B Channels.

Figure 1-2 Physical Interface

Physical Interface

PBX

DTI

Physical Interface

Max. 30B + D

: D Channel : B Channel

Physical Interface 24DTI

On the Q-SIG system, a 1.544 Mbps digital interface is used for the interface trunk. A D Channel Handler is required for each physical interface. A single data link channel can control a maximum of 23 B Channels.

Figure 1-3 Physical Interface

Physical Interface

PBX

DTI

Physical Interface

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Max. 23B + D

: D Channel : B Channel

Page 5

CHAPTER 1 GENERAL INFORMATION

System Outline

Interworking with Other Network

The PBX can be connect ed with t he othe r manuf actu rer’s PB X by the Q- SIG inte rfa ce, an d the Q-SIG network can interwork with the other network.

Figure 1-4 Interworking with Other Network

ISDN

Network

NEC

Q-SIG

Network

Q-SIG interface

Other Manufacturer

Existing Office

ACIS

CCIS

NOTE: Interworking between Q-SIG and CCIS is not available.

Page 6 ND-70923 (E), Issue 1.0

NEAX2000 IVS2 Q-SIG System Manual

CHAPTER 1 GENERAL INFORMATION

SYSTEM CONFIGURATION

Figure 1-5 shows the system configuration of the Q-SIG system.

Figure 1-5 System Configuration of Q-SIG

PBX

SLT

term

DLC

30B/23B

DTI

PLO

30-CHANNEL PCM/23B DIGITAL LINE

System Configuration

Q-SIG

NETWORK

DCH

TDSW

FP MP

CLOCK

DTI: 30/24-Channel Digital Trunk Interface DCH: D Channel Handler PLO: Phase Locked Oscillator

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Page 7

CHAPTER 1 GENERAL INFORMATION

System Configuration

30DTI

The Digital Trunk Interface (DTI) interfaces the PBX directly to 30-channel PCM transmission line. The 30-DTI has the following functions.

• Unipolar/Bipolar Conversion (HDB3 Format)

• Signaling Insertion/Extraction

• Alarm Detection/Insertion

• Digital PAD on Voice Signal Transmission

• Cyclic Redundancy Checking (based on ITU-T Rec. G704)

• Channel Associated Signaling (based on ITU-T Rec. Q421 Digital R2 Signaling Code)

For connection o f a 30-DTI and transmission line, either coaxial cable or twisted pair cable can be used.

DCH

The D Channel Handler (DCH) p rovi des th e D Chan nel sig nalin g inter face th ro ugh th e DTI to a Q-SIG network, and it is responsible for signaling between the PBX and the network under control of the system MP. A DCH can control a maximu m of 30 B Cha nn el s .

24DTI

The Digital Trunk Interface (DTI) interfaces the PBX directly to 24-channel PCM transmission line. The 24-DTI has the following functions.

• Unipolar/Bipolar Conversion (AMI Format)

• Alarm Detection/Insertion

• Digital PAD on Voice Signal Transmission

• Cyclic Redundancy Checking (based on ITU-T Rec. G704)

For connection of a 24-DTI and transmis s ion line, a twisted pair cable can be used.

DCH

Page 8 ND-70923 (E), Issue 1.0

NEAX2000 IVS2 Q-SIG System Manual

CHAPTER 1 GENERAL INFORMATION

System Configuration

PLO

The Phase Locked Oscillator (PLO) equipped on the MP card is responsible to synchronize the system to Q-SIG clocks.

The PLO generates the clock signals according to the source clocks received fro m network. The source clock signals are extracted at DTI cards and supplied to the PLO. Two clock routes are available; one is the Route 0 to receive clock sign als from DTI0, a nd the other is a standby Route 1 (DTI1) to receive clock signals when no clock signals appear on the Route 0. When clock signals come from neither the Route 0 nor the Route 1, the PLO keeps generating the clock signals with the frequency of previous source clock. The PLO can receive different frequency of source clocks from the Route 0 and Route 1.

Figure 1-6 shows an example of clock supply route.

Figure 1-6 Clock Supply Route Configuration

PBX

TDSW

NOTE

DTI0

DTI1

PLO

NOTE: DTI0 and DTI1 must be mounted in PIM0.

Q-SIG

NETWORK

: CLOCK SIGNAL SUPPLY ROUTE 0 : CLOCK SIGNAL SUPPLY ROUTE 1

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Page 9

CHAPTER 1 GENERAL INFORMATION

Card Name and Function

CARD NAME AND FUNCTION

Table 1-1 shows the circuit card name and function for Q-SIG.

Table 1-1 Q-SIG Card Name and Function

FUNCTIONAL

CARD NAME

FUNCTION

NAME

PN-CP14 MP Main Processor Card

Provides Memory, TDSW (1024CH x 1024CH), 16-line CFT, PB sender, Clock, PLO 2 ports (receiver mode/ source mo de), two RS-232C p orts, 2-line DAT (Recording duration: Max. 128 sec.), DK, 4-line PB receiver, Modem fo r re mo te ma i ntenance (19.2 kbps), internal Music-on-Hold tone source and BUS interface. BUS interface function s as a dri v er/r eceiver of various signals, adjusts gate delay timing and cable delay timing, monitors I/O Bus and PCM BUS. One card is required per system.

PN-30DTC-A DTI Digital Trunk Interface (2 Mbps) Card

Accommodates 30-channel PCM digital lines.

PN-SC01 DCH D Channel Handler Card

Provides the D Channe l sig naling interface thr ough the DTI to Q-SIG network.

PZ-M542

[For Other Countries]

CONN Coaxial Cable Connection Card

Used to connect a coaxial cab le fo r the D i gital Tru nk Interface. Maximum of two cards can be connected to LTC connector of each PIM.

PZ-M557

[For Australia]

CONN Coaxial Cable Connection Card

Used to connect a coaxial cab le fo r the D i gital Tru nk Interface. Maximum of two cards can be connected to LTC connector of each PIM.

PN-24DTA-C DTI Digital Trunk Interface (23B+D 1.5 Mbps) card

Accommodates 24-channel PCM digital lines.

Page 10 ND-70923 (E), Issue 1.0

NEAX2000 IVS2 Q-SIG System Manual

CHAPTER 1 GENERAL INFORMATION

SYSTEM CAPACITY

Table 1-2 System Capacity for Q-SIG

DESCRIPTION 24DTI 30DTI

DTI Card 8 4 DCH Card 8 4 Trunks for DTI 192 124 Q-SIG Routes 8 4 Trunks per Q-SIG Route 23 30 MP (Internal PLO ) Ca r d 1 1 Port per DTI Card 24 32

System Capacity

Port per DCH Card 1 1

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Page 11

CHAPTER 1 GENERAL INFORMATION

System conditio ns

SYSTEM CONDITIONS

Time Slot Assignment Condition

As shown in Figure 1-7, the 30DTI/DCH card uses the time slot on the basic Highway 4. Therefore, the total number of time slots for all 30DTI/DCH cards must be 128 time slots or less including all other application processor cards, which use the Highway 4. The 24DTI/PRT card can use the time slot on bo th the basic and expanded H ighw ay 4 and 6.

Figure 1-7 Accommodation of DTI/DCH/ICH/BRT/PRT into TDSW

FOR L/T CARDS: MAX. 512 TIME SLOTS PER SYSTEM

FP0

FP1

FP2

FP3

TDSW (1024 TIME SLOTS)

HW4

HW6

FOR BASIC HIGHWAY4: MAX. 128 TIME SLOTS PER SYSTEM

FOR EXPANDED HIGHWA Y6: MAX. 128 TIME SLOTS PER SYSTEM

DTI

BRT

DCH

ICH

PRT

DTI

MAX. 128 TIME SLOTS

30DTI: MAX. 31 TIME SLOTS/CARD

MAX. 2 TIME SLOTS/CARD (BRTA) MAX. 4 TIME SLOTS/CARD (2BRTC)

1 TIME SLOT/CARD

1 TIME SLOT/CARD (SC02) 4 TIME SLOTS/CARD (SC03)

25 TIME SLOT/CARD

24DTI: MAX. 24 TIME SLOTS/CARD

FOR AP CARDS: MAX. 256 TIME SLOTS PER SYSTEM

NEAX2000 IVS2 Q-SIG System Manual

Page 12 ND-70923 (E), Issue 1.0

CHAPTER 1 GENERAL INFORMATION

System conditions

Time Slot Allocation for DTI/DCH Card

On each DTI card, the system recognizes the lowe st and highest channel numbers to which trunk numbers have been assigned, and allocates time slots to all the channels within them. If trunk numbers are assigned to discontinuous channels in this case, the system also allocates time slots to channels not assigned.

For example, as shown in Figure 1-8, even wh en Channel 1 through Channel 1 0 have been assigned by the system data programming (CM07 YY=01) excepting Channel 5, the system allocates a total of 10 time slots for all the ten channels. Therefore, to avoid allocation of unnecessary time slot s, it is recom mended tha t consecuti ve channe ls are a ssigned on each DTI card.

In the case of the DCH card, one time slot is allocated for setting up a fixed path between the DTI and the DCH by assigning Channel 16 of the DTI as the D Channel.

Figure 1-8 Time Slot Allocation for DTI

CH0

DXXX

NONE

DXXX

NONE

HIGHEST CHANNEL

10 TIME SLOTS ARE ALLOCATED E VEN WHEN CH5 IS NOT ASSIGNED.

LOWEST CHANNEL

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Page 13

CHAPTER 1 GENERAL INFORMATION

Service Features

SERVICE FEATURES

Connected Destination Indication

This feature allows the LCD on the calling station/Attendant Console to indicate the connected destination number (answering station number) and the sub-address sent from the opposite office.

Figure 1-9 Connected Destination Indication

STATION

No. 200

When dialing:

DIAL “7-20-300”

OFFICE

ANSWERING STATION No. “20-300” + SUB-ADDRESS “111”

Q-SIG

NETWORK

term

• D 720300

2: 27 PM TUE 23

Sub-address No. (Max. 8 digits)

STATION

No. 300

OFFICE

• ATTCON

720300

When answered:

01: 00 111

20300

Answering station No. (Max. 8 digits)

Answering station No. (Max. 16 digits)

Duration of the call

20300

• The LCD does not indicate the answering station number and sub-address number if the numbers are not sent from the opposite office.

• If the calling station is a n ISDN t erminal or a terminal w hich has no indicato r, the answ ering station number and sub- address number cannot be indicated.

• If the answering station number exceed s 16 digits, the first 15 di gits and “*” are indicat ed on

term

the D

Page 14 ND-70923 (E), Issue 1.0

LCD. “*” means existence of more than 15 digits.

NEAX2000 IVS2 Q-SIG System Manual

CHAPTER 1 GENERAL INFORMATION

Service Features

• If the sub-address exceeds 8 digits, the first 8 digits and “*” are indicated on the D

term

LCD.

“*” means existence of more than 8 digits.

• The sub-address of the answering station is not indicated on the Attendant Console LCD.

• If the answering station number exceeds 6 digits, the last 6 digits are indicated on the Attendant Console LCD.

• It can be specified to each station (Single l in e Telephone/D

term

) whether an answering station number is sen t or not when answering a Q-SIG call , by system data programming. Attendant Console number cannot be sent.

NEAX2000 IVS2 Q-SIG System Manual ND-70923 (E), Issue 1.0

Page 15

CHAPTER 1 GENERAL INFORMATION

Service Features

Transit Counter Relaying

Transit counter is used as the information which informs the number of stages on tandem connection. On the Q-SIG network, the transit Counter 0 is sent from the calling office. The tandem office sen ds the tran sit count er to th e destinatio n office adding 1 to the va lue of received transit counter. In this manner, the transit cou nter value increases according to the numb er of the stages of tandem connection.

Figure 1-10 Transit Counter

CALLING

OFFICE

TRC=0 TRC=1 TRC=2 TRC=3 TRC=3

TANDEM

OFFICE

TANDEM

OFFICE

Q-SIG NETWORK

TANDEM

OFFICE

DESTINATON

OFFICE

TRC: Transit Counter

• This feature is available when the all PBXs in the network are connected to each other by Q-SIG interface.

• The transit counter values 0 thro ugh 31 are available.

• If the tandem office does not receive the transit counter from the opposite office, the tandem office sends the transit counter as “0” to next office.

Page 16 ND-70923 (E), Issue 1.0

NEAX2000 IVS2 Q-SIG System Manual

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