NEC NEAX2000 IVS2 Transit Counter Relaying

NEAX2000 IVS2 Q-SIG System Manual

Page 16 ND-70923 (E), Issue 1.0

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 sends the transit counter to the destinati on office adding 1 to the va lue of received

transit counter. In this manner, the transit counter value increases according to the number of the

stages of tandem connection.

Figure 1-10 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 through 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.

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

Q-SIG NETWORK

CALLING

OFFICE TANDEM

OFFICE TANDEM

OFFICE TANDEM

OFFICE DESTINATON

OFFICE

TRC: Transit Counter

Contents

Main Page NEAX2000 IVS Q-SIG System Manual ND-70923 (E) NEAX2000 IVS Q-SIG System Manual TABLE OF CONTENTS LIST OF FIGURES LIST OF TABLES INTRODUCTION PURPOSE OUTLINE OF THIS MANUAL REFERENCE MANUALS Page Page 4 System Outline SYSTEM OUTLINE Summary Figure 1-1 System Outline of Q-SIG NOTE: Conforming to Q921-a (PBX-PBX Interface) Physical Interface 30DTI Figure 1-2 Physical Interface Figure 1-3 Physical Interface Physical Interface 24DTI Page 6 Interworking with Other Network Figure 1-4 Interworking with Other Network NOTE: Interworking between Q-SIG and CCIS is not available. System Configuration SYSTEM CONFIGURATION Figure 1-5 shows the system configuration of the Q-SIG system. CLOCK Figure 1-5 System Configuration of Q-SIG 30DTI DCH 24DTI DCH PLO Figure 1-6 Clock Supply Route Configuration CARD NAME AND FUNCTION Table 1-1 Q-SIG Card Name and Function CARD NAME FUNCTIONAL NAME FUNCTION SYSTEM CAPACITY Table 1-2 System Capacity for Q-SIG DESCRIPTION 24DTI 30DTI Page 12 System conditions SYSTEM CONDITIONS Time Slot Assignment Condition Figure 1-7 Accommodation of DTI/DCH/ICH/BRT/PRT into TDSW Time Slot Allocation for DTI/DCH Card Figure 1-8 Time Slot Allocation for DTI SERVICE FEATURES Connected Destination Indication Figure 1-9 Connected Destination Indication Page Transit Counter Relaying Figure 1-10 Transit Counter Page PRECAUTIONS STATIC ELECTRICITY GUARD Figure 2-1 Static Electricity Guard (1 of 2) Figure 2-1 Static Electricity Guard (2 of 2) WHEN MAKING A SWITCH SETTING ON A CIRCUIT CARD ATTENTION Caution REQUIRED EQUIPMENT Table 2-1 Required Equipment for Q-SIG EQUIPMENT DESCRIPTION QUANTITY REMARKS INSTALLATION PROCEDURE Figure 2-2 Installation Procedure for Q-SIG Mounting DTI and DCH Card Mounting CONN Card Page DTI Cable Connection via MDF Figure 2-3 Cable Connection via MDF Figure 2-4 Location of the AP Slots and the LTC Connectors for DTI Page 28 Figure 2-5 Example of MDF Cross Connection for DTI DTI Cable Connection via CONN Card Figure 2-6 Cable Connection via the CONN Card Page 30 Figure 2-7 Example of Coaxial Cable Connection Page HOW TO READ THIS CHAPTER DTI ASSIGNMENT Page Page Page DCH ASSIGNMENT TANDEM CONNECTION ASSIGNMENT To provide Tandem Connection (Tie Line to Q-SIG, Q-SIG to Tie Line), do the following programming. CONNECTED DESTINATION INDICATION ASSIGNMENT Page HOW TO READ THIS CHAPTER MOUNTING LOCATION OF CIRCUIT CARD Figure 4-1 Mounting Location of Circuit Card LIST OF REQUIRED CIRCUIT CARD Table 4-1 List of Required Circuit Card PN-CP14 (MP) Caution Page Page Page Page 50 PN-30DTC-A (DTI) Page Page Page Page Page Page 56 PN-24DTA-C (DTI) Locations of Lamps, Switches, and Connectors Page Page Page Page Page PN-SC01 (DCH) Page Page PZ-M542 (CONN) Lamp Indications This card has no lamps. Page PZ-M557 (CONN) Lamp Indications This card has no lamps.