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CAUTION

•

Install or remove modules from the shelf only when the power is off.
If you install a module in the shelf with the power on, the internal

circuitry may suffer damage and the product warranty will be void.

•

Remove and install circuit boards only in a static-safe environment
(use antistatic wrist straps, smocks, footwear, etc.).

•

Keep circuit boards in their antistatic bags when they are not in use.

•

Do not ship or store circuit boards near strong electrostatic, electromag-
netic, magnetic, or radioactive fields.

•

For more complete information on electrostatic discharge safety
precautions, refer to Bellcore

TM

 Technical Reference # TR-NWT-000870.

Copyright 1997 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered

Printed in the U.S.A.

I

NSTALLATION

 & O

PERATION

 M

ANUAL

44023-1297 <90-00058>

44023

PABX/T

RUNK

I

NTERFACE

 M

ODULE

About this Practice:

• This document has been

reformated to meet ISO 9001
requirements.

Issue date:  December 1997

Reissued Practices: Updated and
new content can be identified by a
banner in the right margin.

UPDATED

Table of Contents

Ordering Information ...........................................................................  2
General Description..............................................................................  2
Circuit Description ...............................................................................  3
Application Information .....................................................................  10
Installation..........................................................................................  13
Operation ............................................................................................  20
Technical Specifications .....................................................................  21
Warranty .............................................................................................  22

Summary of Contents for 44023

Page 1: ...complete information on electrostatic discharge safety precautions refer to BellcoreTM Technical Reference TR NWT 000870 Copyright 1997 by Dantel Inc Dantel is a registered trademark of Dantel Inc IS...

Page 2: ...The 44023 does not accept subassemblies Strap options lets you Select level range Configure E and M leads Select ground or loop start Select privacy and busy mode Select the conference delay feature...

Page 3: ...or jacks LINE RCV signals pins 2 and 4 feed through T1 to the pad This pad provides 23 dB of attenuation which prevents overdriving the mute FET You can strap the attenuation out in cases of low line...

Page 4: ...R24 OUT RCV PAD 23dB IN 8VDC T4 51 53 TEST JACKS DROP MON 8VDC 20 18 POWER SUPPLY REGULATOR 10 8 POWER SUPPLY REGULATOR 18 VDC TP 10 10 VDC 8 VDC TP 9 PINS MON RCV OR XMT TO MODULE CIRCUIT JACK DETAIL...

Page 5: ...he 44023 processes incoming call signaling in one of two ways with a two wire outside facility or a four wire E and M trunk When an incoming call initiates from a two wire outside facility the ring si...

Page 6: ...GND START IN OUT 44 48 K1 A B 10VDC 54 50 56 OUT IN LOOP START 200 OC 2 OC 1 52 1 18 14 39 TEST RESET CC1 MANUAL CLR PWR UP CLR E LEAD OUT IN A C B IN OUT ECHO SUPPR CALL GROUP STATION CALL BUSY CONTR...

Page 7: ...OP RCV respectively The off hook LED also comes on The duration of the alert tone burst proceed to dial signal to the drop is 0 12 seconds This is to ensure that the system is normalized before additi...

Page 8: ...lephone is lifted off hook This transmits an off hook tone which causes the 44021 Address Decoder to ground pin 22 The CCI pin 18 must also be ground When the 440 system station telephone is taken off...

Page 9: ...condition Terminate a call before the phone answers by applying a ground to the clear input pin 16 Application of ground returns all functions to normal and outputs a reset pulse at pin 3 The tone dec...

Page 10: ...stem Functions For an outgoing call the 44023 Seizes the trunk or line when a station or group call input is applied from a decoder Sends an off hook tone to the caller Passes dial tone from the trunk...

Page 11: ...4 18 19 MANUAL CLEAR PITT 49 55 44020 DTMF DECODER 39 21 56 VDC POWER UP CLEAR 49018 STATION SELECT 12 11 10 9 8 7 6 5 4 3 2 1 BUSY GROUP CALL STATION CALL 39 24 26 22 E CONTROL BATT CCO 1 6 21 33 38...

Page 12: ...OC2 GND START OC1 LOOP CONT 54 50 52 44 46 48 38 40 36 32 USE ONLY IF NEEDED ALERT TONE BUSY TONE ON HOOK TONE OFF HOOK TONE R 47 45 43 41 B A T R T 2W DROP 6 5 4 3 44099 OR OTHER HOST MODULE 49020 TO...

Page 13: ...RECEIVE DIST DIST GND GND A11 44023 00 REV__ INC CALL LED OFF HOOK LED XMT LEVEL ADJUST RCV LEVEL ADJUST GND START LP CONT M LEAD BATTERY CONF E CONT IN OUT IN OUT IN OUT OUT IN IN OUT IN OUT BUSY LED...

Page 14: ...control wink off Other GROUND START PABX using ground start Other CONFERANCE CALLING 10 SEC DELAY When using automatic privacy No delay BUSY CONTROL Common decoder for subscriber module and PABX modul...

Page 15: ...trol Ground Start Place this strap IN when the outside line uses ground start Even if the loop control strap is OUT this strap must be IN to allow seizing the line in a ground start situation M Lead T...

Page 16: ...LEAD DROP XMT R A LEAD DROP XMT T 2W RING OUT 2W RING IN LINE XMT R B LEAD 2W TIP OUT 2 W TIP IN LINE XMT T DISTRIBUTION OUT POWER UP CLEAR ON HOOK TONE INPUT OFF HOOK TONE INPUT BATTERY BUSY TONE IN...

Page 17: ...44023 drop side always in terfaces to the outside world central office or PABX trunk The line side interfaces the 440 CMS or other private network INSTALLATION If you install the 44023 in a 440 CMS M...

Page 18: ...d other applications Move terminated level meter to the LINE TRANSMIT test points Note Any source device that loads the input will have to be disconnected For multi station packages Move the bridged l...

Page 19: ...e Dial number for an off net phone Answer off net phone Hang up outside phone Hang up station phone Lift receiver on station phone RESULTS OFF HOOK LED goes off K1 operates seizing the line OFF HOOK L...

Page 20: ...seconds pass Caller disconnected INC CALL LED goes off After 10 to 80 seconds the call is automa tically terminated OFF HOOK LED comes on Caller hears off hook tone dial tone and ringback tones from...

Page 21: ...put Power Requirements Idle Full Load Heat Dissipation Idle Full Load Physical Dimensions Weight Operating Temperature Range TABLE HEAD 300 Hz to 3400 Hz 0 5 dB 20 dB 16 dBm to 7 dBm 16 dBm to 7 dBm 1...

Page 22: ...n instrument signed by a duly authorized officer of the Seller and accepted by the Buyer Warranty and remedies on products not manufactured by the Seller are in accordance with warranty of the respect...

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