PANASONIC DBS 576 User Guide

USA
issued 6/2/98
Warning:
This service information is designe d for experienced repa ir technicia ns only and is not designed for use by the general public . It does not co ntain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electr icity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service infor mation by anyone else could result in serious injur y or deat h.

FCC Warning

This equipment gene rates, uses, a nd can radiat e radio fre quency en ergy, and, if not in stalle d and use d properly, that is, in strict accordance with the instruction manual, may cause interference to radio and televis ion reception. This equipment has been tested and fou nd to comply with the limits for a Class A computing device in Subject J of Part 15 of FCC Rules, which are designed to provide reasona ble protection agains t such interference in a resi dential insta llation. H o w ev er, there is no gu arantee that interfe r e n c e wi ll no t occur in a pa r ti cu lar instal lation. If th i s equipment does cause interference by one or more of the following measures:
1. Reorient the receiving antenna,
2. Relocate the key s ervice unit and key telephones with respect to the receiver,
3. Move the equipment from the receiver,
4. Plug the key service unit into a differ ent outlet so that the equipment and receiver are on differe nt branch circuits.

Battery Recycling Statement

The following stat ement applies if you purchas ed backup batteries with your s ystem. THE PRODUCT YOU HAVE PURCHASED MAY CONTAIN SEALED LEAD ACID BATTERIES WHICH
ARE RECYCLABLE. AT THE END OF THEIR USEFUL LIFE, UNDER VARIOUS STATE AND LOCAL LAWS, IT IS ILLEGAL TO DISPOSE OF THESE BATTERIES INTO YOUR MUNICIPLE WASTE STREAM. PLEASE CALL 1-800-SAV-LEAD FOR INFORMATION ON HOW TO RECYCLE THESE BATTERIES.
The information contained in this do cum ent is subject to chan ge without notice and should not be construed as a commitment by the Panasonic T elecommunication Sys tems Company (PTSC). PTSC reserves the right, without notice, to make changes to equipment design as adva nces in engineering and manufacturing methods warran t.
Reproduction , publication, or dupli cation of this manual, or any pa rt thereof, in any manner, mechanically, electronically, or photographically, is prohibited without permission of the Panasonic Telecommunication Systems Company (P TSC).
Copyright 1998 by Panasonic Telecommunicati on S ystems Company (PTSC)
All rights reserved.
Contents
About This Manual......................................................xv
Overview..................................................................................................................................................xv
Related Documents..................................................................................................................................xv
About Marks Used in This Manual........................................................................................................xvi
Chapter 1.Requirements........................................... 1-1
Mode l N u mb e r s ... ............ .. ........... ........... ............ ........... ........... ........... ... ........... ........... .................... ... . 1-1
FCC Re qu i r e m e nt s .. ........... ........... ........... ............ ........... ........... .. ............ ........... ........... ........... ............ . 1-1
Environmental Requirements ................................................................................................................1-4
Cleaning................................................................................................................................................. 1-5
Chapter 2.System Overview..................................... 2-1
Cabinet Description............................................................................................................................... 2-1
Cabinet Configurations .......................................................................................................................... 2-3
Circuit Cards.......................................................................................................................................... 2-4
Circuit Card Configuration ................................................................................................2-4
Card Descriptions ............................................................................................................... 2-5
Chapter 3.Cabinet Installation.................................. 3-1
Installation Loc ation........................... ............. ....................... ............. ....................... ........................... 3-1
Removing and Replacing Covers. ......................................................................................................... 3-2
Front Cover ........................................................................................................................ 3-3
Side cover ...........................................................................................................................3-4
Top Cover (Base Cabinet Only) ......................................................................................... 3-5
Cabinet Installation. ............................................................................................................................... 3-6
Grounding . ............................................................................................................................................. 3-8
Battery Backup (VB-44025).................................................................................................................. 3-9
-48 Volt Power Supply (VB-44022).......... .. ............. .................................. ............. ............................ 3-11
Card Installati on............. ....................... ............. .......... .. ........................ ....................... ....................... 3-13
576-13-300 DBS 576 (USA), issued 6/2/98 iii
Chapter 4.Installing Additional Cabinets................ 4-1
Installing the Buil ding Block System....................... ....................... ............. ....................... ..................4-1
Installation Location ..........................................................................................................4-1
Installation .......................................................................................................................... 4-2
Building Block Method (floor -mounting) Installation (576- port example shown)............. ............. ..... 4-4
Building Block Method (wall- mounting) Installation (576-port example shown)............ ............. ....... 4-7
Installing Switch Boxes (VB-44023) ............................................................................... 4-11
Battery Backup (VB-44025)................................................................................................................ 4-19
-48 Volt Power Supply (VB-44022).......... .. ............. .................................. ............. ............................ 4-20
Connecting the Systems ................................................................................................... 4-22
Setting ID No. of Additional Cabinets ............................................................................. 4-27
Connecting DBS 576 and DBS 96 Systems........................................................................................ 4-28
Installation ........................................................................................................................ 4- 2 8
Card Installation ............................................................................................................... 4-29
Connecting the Systems ................................................................................................... 4-29
Card Installati on Position ............ ............. ....................... ............. ....................... ............. ................... 4-33
Chapter 5.Trunks and Extensions ........................... 5-1
Maintenance Switches........................................................................................................................... 5-1
Trunks.................................................................................................................................................... 5-3
Trunk MDF Interface Card ................................................................................................ 5-4
Loop-Start Trunks ..............................................................................................................5-6
Loop-Start/Ground Start Trunks ......................................................................................5-10
DID Trunks ...................................................................................................................... 5-14
E&M Tie Line Trunks ......................................................................................................5-17
T-Point ISDN Interface (TBRI) ....................................................................................... 5-19
T-Point ISDN Primary Rate Interface (PRI) ......... ....... .... .. .... .... .. .... .... .. .... .... .. .... .... .. .... .. 5- 22
T1 Interface.......................................................................................................................................... 5-25
Extensions............................................................................................................................................ 5-28
Extension MDF Interface Card ... .... ...... .... ...... .... ........... .... ...... .... ...... .... ...... .... ...... .... ...... 5- 29
Digital Extensions ............................................................................................................ 5-31
DBS 96 Digital Extensions .............................................................................................. 5-34
Analog extensions ............................................................................................................ 5-39
S-Point ISDN Interface (SBRI) ........................................................................................ 5-42
S-point ISDN Primary Rate Interface (PRI) .................................................................... 5-45
Key Phone Wall Mounting............ ....................... ............. ....................... ............. .............................. 5-48
Chapter 6.Peripheral Equipment.............................. 6-1
Music -O n -Hold (M O H )..... .. .. ............ ........... ........... ........... ............ .. ........... ........... ............ ......... .. .. ...... 6 -1
iv DBS 576 (USA), issued 6/2/98 576-13-300
Background Music (BGM).................................................................................................................... 6-2
Paging.................................................................................................................................................... 6-4
PC Customization Tool.......................................................................................................................... 6-7
Call Logging Device........................ ....................... ............. .......... .. ........................ ............................ 6-10
MIS Rep o rt O u tp u t ... .. ........... ............ .. ........... ........... ............ ........... ........... ........... ... .......... . .. ........... .. 6-14
Application Interface (API)................................................................................................................. 6-16
Voice Recognition Adapto r.................... .................................. ............. ....................... ....................... 6-18
DSS...................................................................................................................................................... 6-20
EM24 ................................................................................................................................................... 6-21
TAPI Adaptor...................................................................................................................................... 6-22
Doorphone Adaptor.............. ....................... ............. ....................... ........................ ............................ 6-23
Power Failure Transfer........................................................................................................................ 6-26
Replacing the Backup Batter y of CPC card............................. ............. ....................... ....................... 6-29
Chapter 7.Specifications .......................................... 7-1
Index ...................................................Index-i
576-13-300 DBS 576 (USA), issued 6/2/98 v
vi DBS 576 (USA), issued 6/2/98 576-13-300
List of Tables
Table 1-1 DBS 576 model numbers......................................................................................1-1
Table 1-2 FCC information............................................................................................................... 1-1
Table 1-3 Interface information........................................................................................................ 1-2
Table 2-1 Unit card configuration.........................................................................................2-4
Table 2-2 Switch settings of CPU96 card......................................................................................... 2-6
Table 2-3 LED indication of CPC96 card............... .. ........................ ....................... ............. ............2-6
Table 2-4 Switch settings of CPC288 card.......................... ............. ....................... ............. ............2-8
Table 2-5 LED indications of CPC288 card ................. .................................. ............. ..................... 2-8
Table 2-6 Switch settings of CPC576 card.......................... ............. ....................... ............. .......... 2-10
Table 2-7 LED indications of CPC576 card ................. .................................. ............. ................... 2-10
Table 2-8 LED indications of CBL card......................................................................................... 2-13
Table 2-9 LED indications of CBLDBS card............................. ............. .................................. ..... 2-14
Table 2-10 LED indications of SYNC package................. ............. ............. .......... ............. ............. .2-18
Table 2-11 SCC card switch settings................................................................................................ 2 -20
Table 2-12 Maintenance switch (SW1) settings of LTRK/8 card..................................................... 2-22
Table 2-13 Caller ID switch (SW10-17) settings of LTRK/8 card.......... ............. ....................... ..... 2-22
Table 2-14 LED indications of LTRK/8 card............... ............. .................................. ..................... 2-22
Table 2-15 Ground Start/Loop Start jum per settings of LGTRK/8 card..... ....................... ............. .2-24
Table 2-16 Maintenance switch (SW4) settings of TBRI/4 card............................... ............. .......... 2-29
Table 2-17 Circuit select swit ch (SW1) set tings of TBRI/4 card ........ .. ............. .............................. 2-29
Table 2-18 LED indication of TBRI/4 card........... ....................... ............. .................................. ..... 2-29
Table 2-19 Maintenance switch (SW4) settings of PRI/23 card... .. ............. .......... ............. ............. .2-31
Table 2-20 Dip switch (SW1) settings of PRI/23 car d ................. ............. .................................. ..... 2-31
Table 2-21 Dip switch (SW2) settings of PRI/23 car d ................. ............. .................................. ..... 2-32
Table 2-22 LED indications of PRI/23 card ...... ............. .................................. ............. ................... 2-32
Table 2-23 Maintenance switch (SW3) settings of T1 card....................................... ............. .......... 2-34
Table 2-24 Dip switch (SW1) settings of T1 card ............................................................. ............... 2-34
Table 2-25 Dip switch (SW2) settings of T1 card ............................................................. ............... 2-34
Table 2-26 LED indications of T1 card .... ............. .................................. ............. ....................... ..... 2-34
Table 2-27 Settings of circuit selection switch of SBRI/4 card ........................................................ 2-38
Table 2-28 LED indications of SBRI/4 card...................... .. ............. .................................. ............. .2-38
Table 2-29 Mounting restriction of MFR/8 card........................ ....................... ............. ................... 2-39
Table 2-30 ACD Card Switch Settings....................... ............. .................................. ............. .......... 2-42
Table 2-31 ACD Card LED Indications...... .. .................................. ............. ....................... ............. .2-42
Table 2-32 VPU/4 Card LED Indication ............................... ............. ....................... ............. .......... 2-43
Table 2-33 VPU/8 Card LED Indication ............................... ............. ....................... ............. .......... 2-44
Table 2-34 VSSC Card Switch Settings.... ............. ....................... ............. ....................... ............. ... 2-46
Table 2-35 VSSC Card LED Indications............................... .................................. ............. ............2-46
Table 2-36 Maintenance switch (SW1) settings of API card............... ............. ............. ................... 2-47
Table 2-37 Internal diagnosis switch (SW2) settings of API card..................... .. ... .......................... 2-48
Table 2-38 Memory backup switch (SW3) settings of API card...... .. .......... .. ............. ..................... 2-48
Table 2-39 LED indications of API card.... ............. .................................. ....................... ............. ... 2-48
576-13-300 DBS 576 (USA), issued 6/2/98 vii
Table 4-1 Relationship of Programming Address to DBS Card Postion............................4-32
Table 4-2 PRI/23 and T1 card limitations....................................................................................... 4-36
Table 5-1 Number of Trunk Interface Cards Required per Cabinet..................................... 5-4
Table 5-2 Maximum loop-start trunks per system............................................................................ 5-6
Table 5-3 Caller ID switch (SW10-17) settings of LTRK/8 card..... ....................... ............. ............5-7
Table 5-4 Loop Start Trunk Connections and Pinouts.............. ............. ............. ....................... ...... .5-9
Table 5-5 Maximum Loop-Start/Ground-Start Trunks Per Syst em....... ............. ....................... ..... 5-10
Table 5-6 Ground Start/Loop Start jumper settings of LGTRK/8 card.............. ....................... ..... 5-11
Table 5-7 Loop Start/Ground Trunk Connections and Pinouts............................. ............. ............5-13
Table 5-8 Maximum DID Trunks Per System................................................................................ 5-14
Table 5-9 DID Trunk Connections and Pinouts..............................................................................5-16
Table 5-10 Maximum E&M Tie Line Trunks Per System ........................ ....................... ............. ... 5-17
Table 5-11 Maximum Number of T-Point ISDN Interfaces Per System............ .............................. 5-19
Table 5-12 Line Selection Switch (SW1: SELECT) on TBRI/4 Card... ............. ....................... ....... 5-20
Table 5-13 Mode Settings of PRI/23 Card......... ............. .................................. ............. ................... 5-22
Table 5-14 Maximum Number of T-Point ISDN Primary Rate Interface Cards Per System...........5-23
Table 5-15 Switch Setting for SW2 on PRI/23 Card........... ............. ....................... ............. ............5-23
Table 5-16 Switch Setting for SW1 on PRI/23 Card........... ............. ....................... ............. ............5-24
Table 5-17 Mode Settings of T1 Card....... ............. .................................. ............. ....................... ..... 5-25
Table 5-18 Maximum Number of T1 Interface Cards Per System................................................... 5-25
Table 5-19 Switch Setting for SW2 on T1 Card......... ............. ....................... ............. ..................... 5-26
Table 5-20 Switch Setting for SW1 on T1 Card......... ............. ....................... ............. ..................... 5-27
Table 5-21 Number of Extension Interface Cards Require d per Cabinet........................ .... .. ..... .... .. 5-29
Table 5-22 Maximum cards and digital (and analog) extensions per system.......... ............. ............5-31
Table 5-23 Digital Extension Connections and Pinouts ...................... .. ........................ .................. .5-33
Table 5-24 Relationship of Programming Address to DBS Card Postion.............. ............. ............5-34
Table 5-25 DBS 96 Digital Extension Connections and Pinouts - Slots EC1, EC2, and EC3...... ...5-36
Table 5-26 DBS 96 Digital Extension Connections and Pinouts - Slots EC4, EC5, and EC6...... ...5-37
Table 5-27 DBS 96 Digital Extension Connections and Pinouts - Slots EC7, EC8, and EC/TRK. .5-38
Table 5-28 Maximum cards and analog (and digital) extensions per system.......... ............. ............5-39
Table 5-29 Analog Extension Connections and Pinouts.......................... ............. ........................... .5-41
Table 5-30 Maximum Number of S-point ISDN Interfaces Per System.......................................... 5-42
Table 5-31 Mode Settings of PRI/23 Card......... ............. .................................. ............. ................... 5-45
Table 5-32 Maximum Number of S-point ISDN Primary Rate Interface Cards Per Sys tem ..... .. .... 5-45
Table 5-33 Switch Setting for SW2-2 on PRI/23 Card.............................................. ............. .......... 5-46
Table 5-34 Switch Setting for SW1 on PRI/23 Card........... ............. ....................... ............. ............5-46
Table 6-1 Pinout of external connector (CN3) of SCC card.................................................6-4
Table 6-2 Settings of SW2 on SCC card................ .......... .. ............. .................................. ............. ... 6-5
Table 6-3 RS-232C port (CN5 and CN6) pinout of SCC card ......................................................... 6-7
Table 6-4 Positions of SW1 on SCC card ......................................................................................... 6-9
Table 6-5 ACD Card SW1 Settings.............. ....................... .................................. ............. ............6-14
Table 7-1 Input Power.......................................................... .......... .......... .......... .......... .........7-1
Table 7-2 Battery Backup Capacity.......................... ............. ....................... ........................ ............ 7-1
Table 7-3 Temperature and Humidity Requirements for System Operation
(excludes Built- In Voice Mail)7-1
Table 7-4 Temperature and Humidity Requirements for Built-in VM...... ....................... ............. ... 7-1
viii DBS 576 (USA), issued 6/2/98 576-13-300
Table 7-5 Dimensions and Weight for Single-Cabinet Systems and Telephones ............................ 7-2
Table 7-6 Resource Maximums ........................................................................................................ 7-2
Table 7-7 Feature Related Capacities ............................................................................................... 7-3
Table 7-8 Hardware Maximums ....................................................................................................... 7-5
Table 7-9 Maximum Cabling Dista nces .............. ....................... ............. .................................. ....... 7-7
Table 7-10 Voice Path from KTELS to DBS 576........... .................................. ............. ..................... 7-7
Table 7-11 Data Communication Ports.................................. ............. ....................... .........................7-7
Table 7-12 Signaling to CO ................................................................................................................ 7-8
Table 7-13 Transmission Specific ations........................... ....................... ............. ....................... ....... 7-8
Table 7-14 DTMF Frequencies........................................................................................................... 7-8
576-13-300 DBS 576 (USA), issued 6/2/98 ix
x DBS 576 (USA), issued 6/2/98 576-13-300
List of Figures
Figure 2-1 The DBS 576 Base Cabinet ......................... ....................... ............. .............................. 2-1
Figure 2-2 System Connections....................................................................................................... 2-2
Figure 2-3 Example Cabinet Combinations..................................................................................... 2-3
Figure 2-4 CPC96 card .................................................................................................................... 2-5
Figure 2-5 CPC288 card .................................................................................................................. 2-7
Figure 2-6 CPC576 card .................................................................................................................. 2-9
Figure 2-7 TSW288 card ............................................................................................................... 2-11
Figure 2-8 TSW576 card ............................................................................................................... 2-12
Figure 2-9 CBL card ...................................................................................................................... 2-13
Figure 2-10 CBLDBS interface card ................. .. ..... .... .. ..... .... ..... .... ..... .. ..... .... .. ..... .... ..... .... ..... .. .... 2-14
Figure 2-11 CBLDBS MDF card..................................................................................................... 2-15
Figure 2-12 EXT MDF Interface card................... ..... .... ..... .. ..... .... .. ..... .... ..... .... ..... .. ..... .... .. ....... .. .. 2-16
Figure 2-13 TRK MDF In terface card.......... ..... .... ..... .... ..... .. ..... .... .. ..... .... ..... .... ..... .. ..... .... .. ....... .. .. 2-17
Figure 2-14 SYNC Package.............................................................................................................2-18
Figur e 2 -1 5 SCC card ........ ............ .. ........... ........... ............ ........... ........... ........... ... ........... ............... 2 -1 9
Figure 2-16 LTRK/8 card................................................................................................................ 2-21
Figure 2-17 CID card....................................................................................................................... 2-23
Figure 2-18 LGTRK/8 card............................................................................................................. 2-25
Figure 2-19 DIDTR 8 card............................................................................................................... 2-26
Figure 2-20 E&M/4 card.................................................................................................................. 2-27
Figure 2-21 TBRI/4 card..................................................................................................................2-28
Figur e 2 -2 2 PRI/ 2 3 card .. .. ... ........... ........... ........... ............ ........... ........... .. ............ ........... ............... 2-31
Figure 2-23 T1 card ......................................................................................................................... 2-33
Figure 2-24 DEC/8 card...................................................................................................................2-35
Figure 3-26 SBRI/4 card.... ..... .... ..... .. ..... .... .. ....... .. ..... .... ..... .. ..... .... ..... .... .. ..... .... ..... .. ....... .. ............. 2-37
Figure 3-27 MFR/8 card .................................................................................................................. 2-39
Figure 3-28 CONF card................................................................................................................... 2-40
Figur e 3 -2 9 ACD card ..... .. ............ ........... ........... ........... ............ ........... .. ........... ............ .................2-41
Figure 3-30 VPU/4 card................................................................................................................... 2-43
Figure 3-31 VPU/8 card................................................................................................................... 2-44
Figur e 3 -3 2 VSSC card ........... ........... ........... ... ........... ........... ........... ............ ........... ........... .. .. ......... 2-45
Figur e 3 -3 3 API ca r d .................. ............ ........... ........... .. ............ ........... ........... ........... .................... 2-47
Figure 3-1 Single base cabinet dimensions and maintenance area....... .. .................................. ....... 3-1
Figure 3-2 Removing and replacing front cover of base cabinet..................................................... 3-3
Figure 3-3 Removing and replacing side cover of base cabinet................ ............. ......................... 3-4
Figure 3-4 Removing and replacing top cover of Base Cabinet........... ............. ....................... ....... 3-5
Figure 3-5 Securing the cabinet to the floor (base cabinet shown) ................................................. 3-6
Figure 3-6 Cabinet plywood mounting backboard..........................................................................3-7
Figure 3-7 Wall-mounting Installation: Attaching the Wall-mounting Bracket....................... ....... 3-7
Figure 3-8 Wall-mounting Installation: Attaching the Wall-mounting of cabinet-1....................... 3-8
Figure 3-9 Grounding the Master Cabinet....................................................................................... 3-9
Figure 3-10 Installation of backup batteries (VB-44025)................................................................ 3-10
Figure 3-11 Installation of -48 Volt Power Supply (VB-44022)....................... ....................... ....... 3-12
576-13-300 DBS 576 (USA), issued 6/2/98 xi
Figure 3-12 Typical Initial configuration for automatic starting of base cabinet system................ 3-13
Figure 3-13 Unit card instal lat ion in cabinet ................................................................................... 3-15
Figure 4-1 Building block system dimens ions and maintenance area............................................. 4-1
Figure 4-2 Example cabinet combinations using building block method ....................................... 4-3
Figure 4-3 Floor-Mounting Insta llation: Attaching the Wall-Mounting Bracket............................ 4-4
Figure 4-4 Floor-mounting Insta llation: Vertical Joining... ............. ....................... ............. ............4-5
Figure 4-5 Floor Mounting Installa tion: Vertical/Horizontal Joining................ ............. ............. ... 4-6
Figure 4-6 Wall-mounting Installation: Attaching the Wall-mounting Bracket....................... ....... 4-7
Figure 4-7 Wall-mounting Installation: Attaching the Wall-mounting of cabinet-1....................... 4-8
Figure 4-8 Wall-mounting Installation: Attaching the Wall-mounting of cabinet-2....................... 4-9
Figure 4-11 Wall-mounting Installat ion: Attaching the Wall-mounting of cabinet -3............ ......... 4-10
Figure 4-12 Removing AC cable..................................................................................................... 4-12
Figure 4-13 Installing the Switch Box............................................................................................. 4-12
Figure 4-14 Attaching AC cable to cabinet ..................................................................................... 4-13
Figure 4-15 AC Power Cable Connection to Switch Box/Frame Ground....................................... 4-13
Figure 4-16 Switch Box to Power Supply AC Cable Connections.................................................4-14
Figure 4-17 Switch Box AC Cables to Frame Ground Connections................... .......... .. ................ 4-15
Figure 4-18 Power Supply AC Cable to Frame Ground Connections............. ............. ................... 4-16
Figure 4-19 Battery Control Connections to Expansion Cabinet Power Supplies..........................4-17
Figure 4-20 Battery Control Connection to Base Cabinet Power Supply ....................................... 4-18
Figure 4-21 Installation of cabinet backup ba tte ries (VB-44025)............... ............. ............. .......... 4-20
Figure 4-22 Installation of -48 Volt Power Supply (VB-44022)....................... ....................... ....... 4-21
Figure 4-23 System connection using building block method ( 576 port example)...... ................... 4-24
Figure 4-24 System connection using building block method ( 192 port example)...... ................... 4-25
Figure 4-25 System connection using building block method ( 288 port example)...... ................... 4-25
Figure 4-26 System connection using building block method ( 384 port example)...... ................... 4-26
Figure 4-27 System connection using building block method ( 480 port example)...... ................... 4-26
Figure 4-28 Relationship of rotary switch position/ID number and cabinet................................... 4-27
Figure 4-29 Example combinations of base cabinet and DBS 96................................................... 4-28
Figure 4-30 Connecting the CBLDBS . ............................................................................................ 4-30
Figure 4-31 Addition of two DBS 96 cabinets................................................................................4-31
Figure 4-32 Card installation positions in single cabinet system....................................................4-33
Figure 4-33 Card installation positions in building-block system...................................................4-34
Figure 4-34 Card installation positions in system comprising DBS 576 and DBS 96.................... 4-35
Figure 4-35 Restriction on PRI/23 and T1 cards installed in flexible slots of DBS 576..... .. .......... 4-36
Figure 4-36 Optimization of card installation.................................................................................. 4-37
Figure 5-1 Maintenance switch positions (LTRK/8 card shown).................................................... 5-2
Figure 5-2 Trunk MDF Interface Insta lla tio n .................. .... .. ..... .... ..... .. ....... .. ..... .... .. ..... .... ..... .... .... 5-5
Figure 5-3 Caller ID Card Installation:............................................................................................ 5-7
Figure 5-4 Connecting loop-st art trunks......... ............. ....................... ............. ....................... .........5-8
Figure 5-5 Connecting Loop-Start/Ground Start Trunks............................................................... 5-12
Figure 5-6 Connecting DID Trunks.............. ............. ............. ....................... ............. .......... .. ....... 5-15
Figure 5-7 Connecting E&M Tie Line Trunks.............. ....................... ............. ....................... ..... 5-18
Figure 5-8 Installation of Sync Package (Example: Installation on TSW288 Card)..................... 5-20
Figure 5-9 Connection of T-Point ISDN Interface (BRI)............... ..... .... ..... .. ..... .... .. ....... .. ..... .... .. 5-21
Figure 5-10 Connection of T-Point ISDN Primary Rate Interface (PR1) . ..... .... ..... .. ....... .. ..... .... .. .. 5-24
Figure 5-11 Connection of T1 Rate Interface.................................................................................. 5-27
Figure 5-12 Extension MDF Interface Installation.......................................................................... 5-30
xii DBS 576 (USA), issued 6/2/98 576-13-300
Figure 5-13 Connecting Digital Extension Lines ............................................................................5-32
Figure 5-14 Connecting DBS 96 Digital Extension Lines .............................................................. 5-35
Figure 5-15 Connecting Analog Extension Lines.... ............. ............. ....................... ............. .......... 5-40
Figure 5-16 Connection of S-point ISDN Interface (SBRI) ............................................................ 5-43
Figure 5-17 Point to multi-point connection (Long distance away)................................................ 5-44
Figure 5-18 Connection of S-point ISDN Primary Rate Interface (PRI) ................. ............. ..........5-47
Figure 5-19 Wall mounting of phone ............. ............. ............. ....................... ............. .......... .. ....... 5-49
Figure 6-1 Installation of music-on-hold source.............................................................................. 6-2
Figure 6-2 Installation of background music source ........................ .. ........................ ..................... 6-3
Figure 6-3 Connection of paging device.......................................................................................... 6-6
Figure 6-4 Connections for D-SUB 9-pin to D-SUB 25-pin cable.................................................. 6-8
Figure 6-5 Connections for D-SUB 9-pin to D-SUB 9-pin cable.................................................... 6-8
Figure 6-6 Connection to PC... ....................... ............. .................................. ............. ..................... 6-9
Figure 6-7 Connections for D-SUB 9-pin to D-SUB 25-pin cable................................................ 6-10
Figure 6-8 Connections for D-SUB 9-pin to D-SUB 9-pin cable.................................................. 6-11
Figure 6-9 Connection to call logging de vice................ .......... ............. ............. ....................... ..... 6-12
Figure 6-10 SMDR Output data format........................................................................................... 6-13
Figure 6-11 Connecting the ACD Card Personal Computer/Printer............................................... 6-15
Figure 6-12 25-pin to 25-pin D-SUB cable connections................................................................. 6-17
Figure 6-13 Connecting API card to PC.......................................................................................... 6-17
Figure 6-14 Removing telephone wall-mount adaptor.................................................................... 6-18
Figure 6-15 Cutting the connector covering from bottom of phone ................................................ 6-18
Figure 6-16 Connecting voice recognition adaptor to key phone.................................................... 6-19
Figure 6-17 Connecting phone to secondary socket........................................................................ 6-19
Figure 6-18 DSS connection............................................................................................................ 6-20
Figure 6-19 EM24 connection......................................................................................................... 6-21
Figure 6-20 Installing the TAPI adaptor.......................................................................................... 6-22
Figure 6-21 Doorphone Adaptor cable punch-out plate and wall mounting................................... 6-24
Figure 6-22 Doorphone Adaptor connections ................................................................................. 6-25
Figure 6-23 Power Failure Unit cable punch-out plate and wall mounting......................... ............6-27
Figure 6-24 Power Failure Unit connections............... ............. .......... ............. ............. ................... 6-28
Figure 6-25 Replacing the backup battery of CPC card.................................................................. 6-30
576-13-300 DBS 576 (USA), issued 6/2/98 xiii
xiv DBS 576 (USA), issued 6/2/98 576-13-300
About This Manual

Overview

This manual provides installation instructions for the DBS 576. Please carefully observe the contents of this manual.
The following table summari zes the purpose of each chapter .
Chapter No. Title Purpose
1 Requirements Includes DBS 576 model Nos, information on the
installation environment, and how to clean the DBS
576.
2 System Overview Provides an overview of the DBS 576. This overview
includes descriptions of the cabinet, system configura­tions, and unit cards.
3 Cabinet Installation Explains how to prepare for base cabinet installation,
how to remove and replace the cabinet cover, install the battery and install cards.
4 Installing Additional
Cabinet
5 Exchange Lines and
Internal Lines
6 Peripheral Equipment Describes how to install and connect DSS, doorphone
7 Specifications Lists the specifications of the equipment constituting

Related Documents

• For instructions on DBS 576 programming, see the Programming Manual (Section 400).
• For detailed descriptions of DBS 576 operations, see the Operating Instruction (Section 700).
Explains how to prepare for additional cabinets, how to install them, and how to link the respe ctive systems, how to set the expansion cabinet ID No., and how to connect to the DBS.
Explains how to connect exchange lines and dedi­cated, and how to connect different types of digital and analog internal lines, and how to mount telephones on the wall.
adaptors, other peripheral equipment, and replacing the back up battery of CPC card.
the DBS 576.
576-13-300 DBS 576 (USA), issued 6/2/98 xv

About Marks Used in This Manual

XXXXX card
Card names shown at the side of function titles indicate cards that must be mounted to enable connections.
Cards marked with an at the side of the card name indicate that the card must not be removed or inserted while the power is ON.
For details on removing and inserting cards, refer to "Maintenance Switches" on page 5-1.
xvi DBS 576 (USA), issued 6/2/98 576-13-300

Chapter 1. Requirements

This chapter describe s DBS 576 model numbers, inf ormation on the installation environment, and how to clean the DBS 576.

Model Numbers

Table 1-1. DBS 576 model numbers
Designation Product Name Product Number
96 port Cabinet Base Cabinet VB-44020 96 port Expansion Cabinet Expansion Cabinet VB-44021

FCC Requirements

General Requirements

• The Federal Communications Commission (FCC) has established Rules which permit the DBS 576 to be directly connected to the telephone network. FCC Compliant standardi zed jacks are used for these connections.
• This equipment may not be used on coin service provided by the telephone company. This equipment should not be used on party lines.
• Key FCC information appears in the following table.
Table 1-2. FCC information
Item Specification
FCC Registration Number When used as a key system: JNVUSA-32340-KF-E
Ringer Equivalence Number Loop start - 0.5B/2.8DC* ; DID - 0.0B* Network Address
Signaling Code * The Ringer Equivalence Number (REN) is useful to determine the quantity of
devices that you may connect to your telephone line and still have all of those devices ring when your number is called. In most, but not all areas, the sum of the RENs of all devices on any one line should not exceed five (5). To be certain of the number of devices you may connect to your line, as determined by the REN, you should call your telephone company to dete rmine the maximum REN for your call­ing area.
When used as a PBX: JNVUSA-32339-MF-E
E
• Before connecting the DBS 576, provide the telephone company with the following information:
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Table 1-3. Interface information
Port Type
Loop Start Trunk 2-wire loop RJ21X 9.0F 02LS2 DID Trunk 2-wire DID RJ21X AS.2 02RV2- T T1 Trunk T1 Not Applicable 6.0P 04DU9-DN,
ISDN T1 Not Applicable 6.0P 04DU9-DN,
E&M Type I 2-wire
Type of
Interface
Type I 4-wire Type II 2-wire Type II 4-wire
• This equipment complies with Part 68 of the FCC Rules. On the left cover panel of this equipment is a label that contains, among other information, the FCC registration number and Ringer Equivalence Number (REN) for this equipment. If requested, provide this information to your telephone company.
• If the DBS 576 telephone equipment caused harm to the Telephone Network, the Telephone Company may discontinue your servic e temporarily. If possible, they will notify you in advance. But if advance notice isn’t practical, you will be notified as soon as possible. You will be advised of your right to file a complaint with the FCC.
USOC Jack
Connector
RJ1CX 9.0F TL11M
Service
Order Code*
Facility Interface
04DU9-1SN
04DU9-1SN
TL31M TL12M TL32M
Code
• No customer is authorized to repair this equipment. This restriction applies regardless of whether the equipment is in or out of warranty.
• The Telephone Company may make changes in its faci lities, equipment, operations or procedur es, that could affect the proper opera tion of your equipment. If they do, you will be given advance notice so as to give you an opportunity to maintain uninterrupted service.
• The Digital Key Telephones designed for use with this system are hearing aid compatible.
• This equipment is capable of providing users access to inter sta te providers of operator ser vices through the use of access codes. Modification of this equipment by call aggregators to bloc k access dia ling codes is a violation of the Telephone Operator Consumers Act of 1990.
• If you experience trouble with the DBS 576, please contact Panasonic Telecommunication Syste ms Company, Busin e s s Tele p hone Systems D ivision, Two Panasonic Way Panazip 7B-3, Secau cus, NJ 07094 (P hone : (1-800 - 822-0 909) f or repair/warranty information. The telephone company may ask you to di sconn ect this equipment f rom the networ k unti l the prob lem has be en corrected or you are sure that the eq uipment is not malfunc tioning.
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• When programming emergency number and/or making test calls to emergency numbers:
- remain on the line and briefly explain to the dispatcher the reason for the call.
- Perform such activitie s in the off -peak hours, such as early morning or late evening.
• The software contained in the DBS 576 to allow user access to the network must be upgraded to recognize newly esta blished network area codes and exchange codes as they are placed in service.
- Failure to upgrade the premises systems of peripheral equipment to recognize the new codes as they are established will restrict the customer and the customer’s employees from gaining access to the network and to these codes.
- Bell Communications Research (Bellcore) publishes the North American Numbering Plan (NANP) information in paper, microfiche and tape. An abbr evia ted su mmary of t he ne wly establi she d area c odes and exchange codes is also available. Bellcore may be contacted on (908) 699 6700 to obtain appropri ate inf ormation to keep customer equipment upgraded.

DID Requirements

Allowing this equip ment to b e opera ted in su ch a manner a s to not provide f or pr oper answer supervision is a viol at ion of Part 68 of the FCC Rules.
Proper answer supervision is when: A. This equipment returns answer supervision to the PSTN when DID calls are:
- Answered by the called station
- Answered by the attendant
- Routed to a recorded announce ment that can be administered by the CPE user
- Routed to a dial prompt.
B. This equipment provides answer supervision on all DID calls forwarded to the PSTN. Permissible exceptions are:
- A call is unanswered
- A busy tone is received
- a reorder tone is rec ei ved
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T1 Requirements

This device must only be connected to the T1 network connected behind an FCC Part 68 registered channel service unit. Direct connection is not allowed.

Environmental Requirements

Temperature: The environment should be free from exce ssi ve temperatur es in order to avoid component damage. Room temperature s should be 32° to 104 C).
Humidity: The environment shoul d be free from excessive humidity, which may rust metallic parts an d degra de performance. Do not install the system where humidity could conde nse on its surf aces. Rel ative humid ity shou ld range betwe en 30 and 90 percent.
Ventilation : Adequate ventilation must be provided to allow upward ai r circulation through the cabinet grille.
F (0° to 40
°
°
Gas and airborne particles: To avoid corrosion or oxidation of electrical contacts , the environment should be free from air borne particles and corrosive gas.
Electrical noise: The environment should be free from excessive electrical noise, which could di sturb the operation of digital circuits. The system should be located at least 10ft. (3m) away from welders, dimmers, or other high-current machines. Phones connected to the syste m should not be locate d near fluorescent lamps, air conditioners, washing machines, TVs, or radios.
Vibration: The environment should be free from excessive vibration, which coul d loosen components.
Water exposure: Because the DBS 576 is an electrical device, exposure to water is dangerous. Do not place anything containing water on the system. Do not install under overhead plumbing, sprinkler sys tem valves, or in areas that are susceptible to flooding.
Lighting: Suff icient lighting is required for testing and maintenance. Lightning protection/groundin g: The system must be properly grounded to protect
it from lightning damage.
• Supplemental and independent equipment grounding conduc tors are to be installed between the system and the wiring system ground.
• One of the equipment grounding conductors must be a wire that is as thick or thicker than the unground ed bran ch-circuit supply conductors. The equipment grounding conductor is to be installed as part of the circuit that supplies the system and is to be conn ected to a grou nd terminal at the ser vice equi pment. Bare, covered, or insulated grounding conductors should have a continuous outer f inish that is either green or green with one or more yellow stripes. The equipment grounding conductor should be conne cted to a ground terminal at the service equipment.
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Section 300-Installation Chapter 1 - Requirements
• The attachment-plug receptacles of the same type as that used by the systems that are in the vicinity of the DBS 576 are all to be of a grounding type, and the equipment grounding conduc tors serving these receptacles are to be connected to earth ground at the service equipment.
• A marking adjacent to the telecommunications jacks must instr uct the user to connect grounding conduc tors for peripheral equipment before any telecommunication lines are connected to the product or system.

Cleaning

• Use a slightly damp cloth to clean the phones. The phones should never be cleaned with benzene, paint thinner, or other solvents.
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Chapter 2. System Overview

This chapter provides an overview of the DBS 576. This overview includes descriptions of sys tem configurations and unit cards.

Cabinet Description

Panasonic's DBS 576 is a hybrid telephone system capable of supporting up to 576 ports.
The DBS 576 cabinet includes the following:
• Power unit
• Card slots
• Unit cards (optional)
• Backup battery (VB-44025) (optional)
• Switch box (VB-44023) (One required per base cabinet with one or more expansion cabinets att ache d)
• -48V Power Supply (VB-44022) (optional) (when one or more Ground Start, DID or E&M cards are installed in this cabinet)
Figure 2-1. The DBS 576 Base Cabinet
Peripherals such as paging spe akers, external music-on-hold sources, background music sources, PCs, printers, and SMDR connect to the unit cards.
Figure 2-2 sh ows the t runk a nd extensi on li ne con nections a s well as som e periph eral connections. Trunk and extensi on li ne conn ections a re cove red in de tail in Chapt er 5. Peripheral connections are covered in detail in Chapter 6.
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Figure 2-2. System Connections
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Section 300-Installation Chapter 2. System Overview

Cabinet Configurations

Two types of cabinets are used with the DBS 576. The DBS 576 base cabinet (VB-
44020) supports 96 ports. A DBS 576 system may contain up to two base cabinets. Each base cabinet can be combined with up to 2 expansion cabinets (VB-44021) to configure systems for up to 576 ports. They can also be combi ned with an existing DBS to increas e the num ber of digit al exte nsion line ports. For det ails, see Chapter 4, "Connection to DBS" (page 4-28).
Figure 2-3. Example Cabinet Combinations
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Circuit Cards

Circuit Card Configuration

Table 2-1 shows the unit cards and packages that can be used with the DBS 576.
Table 2-1. Unit card configuratio n
Card Type Card Designation Product
Analog Trunk
Digital Trunk
Digital Extension
Analog Extension
Service Circuit
Processor Cards
DTMF Circuits
Interface cards
Time-Switch Circuits
Audio applications
Daughter package
Loop Start Trunk Card LTRK/8 VB-44510 8-port loop-start trunk card An optional CID card can be
Loop Start/Ground Start Trunk Card
DID Trunk Card DID/8 VB-44520 8-port DID trunk card Dial Pulse and DTMF E&M Tie Line Trunk Card E&M VB-44560 4-port type 1/type 2 E&M tie line trunk
BRI Card TBRI/4 VB-44 530 T-point ISDN i nterface ports PRI Card PRI/23 VB-44540 T-point ISDN primary interface port
T1 Card T1 VB-44550 24-circuit T1 interface card Digital Extension Card DEC/8 VB-44610 8-port digital extension card BRI Unit (S-Point) SBRI/4 VB-44630 S-poi nt ISDN interf ace ports PRI Card PRI/23 VB-44540 T-point ISDN primary interface port
Analog Extension Card AEC/ 8 VB-44620 8-port analo g extens ion card
Service Control Card SCC VB-44181 Service circuit card (high level)
CPC-96 Card CPC96 VB-44410 Call processor card for 96 port system
CPC-288 Card CPC288 VB-444201 Call processor card for up to 288 port
CPC-576 Card CPC576 VB-4 44301 Call proc essor card for 576 port system
8 DTMF Receiver Card MFR/8 VB-44110 8-circuit DTMF receiver
Building B lock Expansi on Card
Connection Cable Card-DBS CBLDBS VB-44452 DBS 576-to-DBS interface card Install in AUX slot of DBS. Trunk MDF Card MDF-CO VB-44512 T runk MDF inter face card Mounts on si de of cabinet Extension MDF Card MDF-EX VB-44611 Extension MDF interface card Mounts on side of cabinet API Card API VB-44131 Applications Processor Interface card Data for External Integrated
8-Party Conference Card CONF VB-44120 Interface card for 8-party conference
Time Switch Card/288 TSW288 VB-444202 Time-switch circuit card (standard) Required with CPC288 card Time Switch Card/576 TSW576 VB-444302 Time-s w itch circuit ca r d (high-level) Required with CPC576 c ard Voice St or age Service Card VSSC VB-44170 2-way Voice storage cards Voice Processing Card/4 VPU/4 VB-44160 V oice processing card
Voice Processing Card/8 VPU/8 VB-44150 Voice processing cards 8 ACD Card ACD VB-44140 Built-in ACD unit Sync. Pac kage/Network Un it SYNC VB-44460 Network sync circuit unit (st a ndard) Mounts on CPC96,
Caller ID CID VB-44513 Caller ID interface card Mounts on LTRK/8 card
Name
LGTRK/8 VB-44511 8-port loop-start/ground start trunk card
CBL VB-44451 I nter fac e card for additiona l cabinet Mounts in CPC s lot of all but
Prod uc t No. Card Description Remarks
attached (see below)
card
and S-poi nt primary inte rface port
and S-poi nt primary inte rface port
Including Ringer circui t
RS232C po r t 2, BGM I/F External paging I/F
(single cabinet)
system (up to 3 cabinets)
(up to 6 cab i n e t s )
interface
Built-in ACD voice 4 processing card (4ch)
Supports up to 96 ports, 16 bit CPU
Supports up to 288 ports, 16 bit CPU
Supports up to 576 ports 32 bit CPU
first base cabinet
VM or ACD products
TSW288, or TSW576 card.
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Section 300-Installation Chapter 2. System Overview

Card Descriptions

This section provides an overvi ew of each card to be inst alled in the main cabinet.

CPC96 card (VB-44410)

The CPC96 card is a high-level CPU card for a 96 port system. This card incorporates a 16-bit CPU.
The CPC96 card provides a time switch (4 Highway x 4 Highway), a 4-circuit MFR (DTMF receiver circuit), a 3-party conference circuit, service tone, a DTMF transmitter, an input terminal for external hold tone source (RCA jack) , a connecting terminal for synchronization package (VB-44460), an interface connector for external PC card and modem (300 bps) functions. The system control program is downloaded to the internal memory of the system through the PC card. Memory is retained with a backup batt ery. (See “Replacing the Backup Battery of CPC card” on page 6-29 for more information on battery replacement.)
Note:
Otherwise, the system will operate in Key mode.
Figure 2-4. CPC96 card
J1 must be cut for the system to operate in Hybrid/PBX mode.
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Table 2-2 shows the switch settings and Table 2-3 shows the LED indicators.
Table 2-2. Switch settings of CPU96 card
SW No. Descripti on
SW1 : Black (MODE) Push switch for setting modes of syst em. SW2 : Red (RESET) Push switch f or res etting. SW3 : (CODE) Rotary switch for setting startup mode of system. SW6 : (RAM HOLD) Switch for selecting bat te ry backup of memory.
Table 2-3. LED indication of CPC96 card
LED indication Description
LED3 (RUN) Flashes red when Main Processing Unit (MPU) is operating. LED1 (MJ) Tur ns ON red when Major (MJ) alarm is dete ct ed. LED2 (MN) Turns ON red when Minor (MN) alarm is detected.
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Section 300-Installation Chapter 2. System Overview

CPC288 card (VB-444201)

The CPC288 card is a standard C PU unit for a system with up to 288 ports. A 16-bit CPU is incorporated.
The CPC288 card provides a 4-circui t MFR (DTMF receiver circuit), an input terminal for external hold tone source (RCA jack), an interface connector for external PC card and modem (300 bps) functions.
This card requires The system control program is downloaded to the internal memory of the system
through the PC card. Memory is retained with a backup battery. (See “Replacing the Backup Battery of
CPC card” on page 6-29 for more information on battery repla cement.) The switch settings are li sted in Tabl e 2-4. The LED indicators are listed in Table 2-
5.
Note:
Otherwise, the system will operate in Key mode.
Figure 2-5. CPC288 card
the use of the TSW288 card (VB-444202).
J1 must be cut for the system to operate in Hybrid/PBX mode.
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Table 2-4. Switch settings of CPC288 card
SW No. Descripti on
SW1 : Black (MODE) Push switch for setting modes of syst em. SW2 : Red (RESET) Push switch f or res etting. SW3 : (CODE) Rotary switch for setting startup mode of system. SW6 : (RAM HOLD) Switch for selecting bat te ry backup of memory.
Table 2-5. LED indications of CPC288 card
LED indication Description
LED4 (RUN) Flashes red when (FPU) is operating. LED3 (RUN) Flashes red when Main Processing Unit (MPU) is operating. LED1 (MJ) Tur ns ON red when Major (MJ) alarm is dete ct ed. LED2 (MN) Turns ON red when Minor (MN) alarm is detected.
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CPC576 card (VB-444301)

The CPC576 card is a high-performance CPU unit for system with up to 576 ports. A 32-bit CPU is incorporate d.
The CPC576 card provides a 4-circui t MFR (DTMF receiver circuit), an input terminal for music on hold tone sour c e (RCA jack), an interface connector for PCM­CIA (PC card interface connector) and modem (300 bps) functi ons.
This card requires the use of the TSW576 card (VB-444302). Memory is retained with a backup battery. (See “Replacing the Backup Battery of
CPC card” on page 6-29 for more information on battery repla cement.) The system control program is downloaded to the internal memory of the system
through the PC Card (VB-44431). The PC Card is also necessary during normal operating time (do not remove the PC Card).
Note:
Otherwise, the system will operate in Key mode.
CAUTION:
Figure 2-6. CPC576 card
J7 must be cut for the system to operate in Hybrid/PBX mode.
• A replacement Single Inline Memory Module (SIMM) is provided through the service parts route. Panasonic does not take any responsibili ty if a SIMM, ot her than Panasoni c se rvice p arts, or PC Card, other than VB-44431 is connected to the CPC576 card.
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Table 2-6 shows the switch settings of the CPC576 and Table 2-7 shows the LED indications.
Table 2-6. Switch settings of CPC576 card
SW No. Descripti on
SW1 : Black (MODE) Push switch for setting modes of syst em. SW2 : Red (RESET) Push switch f or res etting. SW3 : (CODE) Rotary switch for setting startup mode of system. SW6 : (RAM HOLD) Switch for selecting bat te ry backup of memory.
Table 2-7. LED indications of CPC576 card
LED indication Description
LED4 (RUN) Flashes red when FPU is operating. LED3 (RUN) Flashes red when Main Processing Unit (MPU) is operating. LED1 (MJ) Tur ns ON red when Major (MJ) alarm is dete ct ed. LED2 (MN) Turns ON red when Minor (MN) alarm is detected.
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TSW288 card (VB-444202)

The TSW288 card is the time switch card for the CPC288 card. The TS W288 card is mounted on the option slot of the main cabinet. Only one TSW288 card can be mounted for each system (maximum 288 ports).
When connecting to additiona l cabine ts, this card is cabled to the CBL card (VB-
44451) installed into CPC card slot of the additional cabinet(s). The TSW288 card provides functions fo r a time switc h (14 Highways x 14
Highways), service tone, DTMF output, a connecting terminal for synchronization package (VB-44460) and eight 3-party conference circuits.
Figure 2-7. TSW288 card
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TSW576 card (VB-444302)

The TSW576 card is the time switch card required for the system using a CPC-576 card. This card supports a maximum of 576 ports.
The TSW576 card is mounted in the option 1 slot of the main cabinet. Only one TSW576 card can be mounted for each system.
When connecting to additiona l cabine ts, this card and CBL card (VB-44451) installed into CPC card slot of the additional cabinet are connected.
The TSW576 card provides functions fo r a time switc h (24 Highways X 24 Highways), service tone, DTMF output, a connecting terminal for synchronization package (VB-44460), and eight 3-party conference circuits.
Figure 2-8. TSW576 card
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Section 300-Installation Chapter 2. System Overview

CBL card (VB-44451): Building Block card

The CBL card is required for interconnecting cabinets in the DBS 576 system. The TSW288 or TSW576 card is also necessary for the interconnection of cabinets (building block connection).
The CBL card must be mounted in th e CPC slot of all cabinets other than the master cabinet. A dedicated inter connect cable pair connects between cabi nets. The connection to the master base cabinet is to the TSW288/TSW576 card, which is mounted in the OP1 slot.
A rotary switch on the CBL card identifies the cabine t to the rest of the system (1 ­first additional cabinet, 2 - second additional cabinet, etc.). Up to 5 additional cabinets can be installe d and each must be uniquely identified.
Figure 2-9. CBL card
Table 2-8 shows the LED indication.
Table 2-8. LED indications of CBL card
LED indication Description
LED1 (RUN) Flashes red when operating.
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CBLDBS Card Kit (VB-44452): Connection Cable card-DBS
The CBLDB S kit includes an interface ca rd and cabl es for co nne ct ing bet w een the DBS 576 and the DBS 96 cabinet and a new MDF interface ca rd for th e DBS.
The TSW288 / TSW576 card is necessary for connecting a DBS 576 to a DBS 96 cabinet.
The CBLDBS card must be mounted in the AUX1 slot of the DBS (AUX2 cannot be used). A dedicated cable conne cts this card and the TSW288 / TSW576 card, which is mounted on the OP1 slot of the Main Cabinet.
Only DEC cards can be installed in the DBS system.
Figure 2-10. CBLDBS interface card
Table 2-9 shows the LED indications.
Table 2-9. LED indications of CBLDBS card
LED indication Description
LED1 (RUN) Flashes red when FPU is operating.
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The CBLDB S interface card provide s connection points between the DBS and the MDF.
Figure 2-11. CBLDBS MDF card
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EXT MDF card (VB-44611): Extension MDF Interface Card
The EXT MDF card provides a standard 25-pair conne ction at the DBS 576 Cabinet. This interface boar d insta lls in one of five possible positions on either sid e of the DBS 576 Cabinet and supports up to three exte nsion cards (either DEC/8 or AEC/8). Since each extension card contains 8 extension ports, the EXT MDF supports a maximum total of 24 extensions.
A standard 25-pair cable must be run from this int erface board to the MDF.
Figure 2-12. EXT MDF Interface card
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TRK MDF card (VB-44512): Trunk MDF Interface Card

The TRK MDF card provides a standard 25- pair co nnection at the DBS 576 Cabine t. This interface boar d insta lls in one of five possible positions on either sid e of the DBS 576 Cabinet and supports up to three trunk cards (LTRK/8, LGTRK/8 or DIDTR/8). Since e ach of t hese trunk c ards c ontains 8 exte nsion por ts, the TRK MDF supports a maximum total of 24 trunks.
A standard 25-pair cable must be run from this int erface board to the MDF.
Figure 2-13. TRK MDF Interface card
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SYNC Package (VB-44460): SYNC Package/Network Unit
The SYNC package supplie s a networ k synchr onizing cir cuit, and is re quire d when a digital circui t, suc h as ISDN, is used.
The SYNC package generates a PCM clock that is synchronized with a digital network by the PLL circuit, supplying the PCM clock to the TSW288 / TSW576 card or CPC96 card.
The SYNC package is mounted on either the CPC96 card or the TSW288/TSW576 card.
For details on how to mount the SYNC package, see page 5-20.
Figure 2-14. SYNC Package
Table 2-10 shows the LED indications.
Table 2-10. LED indications of SYNC package
LED indication Description
LED1 (SYNC) Turns on when synchronizing to the CO clock.
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SCC card (VB-44181): Service Control Card

The SCC card is used to extend se rvice functions. This card is mount ed in the option slot to support RS-232C port contr ol, background music (BGM) input and external paging (external paging with talkback) control.
Only one SCC card can be mounted for each system. The major specifications of this card follow:
• RS-232C port: 2 ports (max. 9600 bps) CN5: SMDR or customized tool CN6: Bus monitor
• BGM input terminal: 1 port (with RCA jack)
• External paging input terminal
• External amplifier ON/OFF control: 1 contact
• Number of contacts for external equipment ON/OFF control: 5 contacts
• Maximum drive current controlling ports for external equipment control board: 25mA (Total)
Figure 2-15. SCC card
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Table 2-11 shows the switch settings.
Table 2-11. SCC card switch settings.
Switch No. Setting Description
SW1 CTM Connects customized tool to RS-232C port (CN5).
SMDR Connects SMDR to RS-232C port (CN5) (default)
SW2 ON Sets input impedance of exte rnal paging device to 600
Ohms
.
OFF Sets input impedance of external paging devic e to high impedance. (This is
set before shipping.)
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LTRK / 8 card (VB-44510): Loop Start Trunk Card

The LTRK/8 car d is an interface that accommod at e s loop star t ty pe ana log tru nks . This card is mounted on a flexible slot to connect analog telephone lines. An optiona l “piggyback” daughter circuit card (VB-44513) may be installed on this card to receive Caller ID. See “CID card (VB-44513) : Caller ID Interface Card” on page 2­23 for more information.
The LTRK/8 card provides 8 circuit trunk interface, detection and answering of call signals from the trunk, sendi ng signals to the trunk, dialing and speech.
The LTRK/8 card provides a lightening arrester and a safety circ uit to directly connect with general telephone lines.
Figure 2-16. LTRK/8 card
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Table 2-12 and Table 2-14 show the switch settings and LED indications.
Table 2-12. Maintenance switch (SW1) settings of LTRK/8 card
Setting Description
ON Card is in cl osed status, and can be mounted and removed when power is ON. (Send-
ing/receiving of calls is disabled. If this is set while a trunk is in use, sending/receiv­ing of calls is disabled afte r the call ends.)
OFF (M-SW) Norm al operation (This switch is set to OFF for normal operation.)
Table 2-13. Caller ID switch (SW10-17) settings of LTRK/8 card
Switch Setting Description
SW10 ON Circuit 1 is in loop start mode and does not receive calle r ID inform ation.
OFF Circuit 1 is set to receive Caller ID information (requires CID card).
SW11 ON Circuit 2 is in loop start mode and does not receive calle r ID inform ation.
OFF Circuit 2 is set to receive Caller ID information (requires CID card).
SW12 ON Circuit 3 is in loop start mode and does not receive calle r ID inform ation.
OFF Circuit 3 is set to receive Caller ID information (requires CID card).
SW13 ON Circuit 4 is in loop start mode and does not receive calle r ID inform ation.
OFF Circuit 4 is set to receive Caller ID information (requires CID card).
SW14 ON Circuit 5 is in loop start mode and does not receive calle r ID inform ation.
OFF Circuit 5 is set to receive Caller ID information (requires CID card).
SW15 ON Circuit 6 is in loop start mode and does not receive calle r ID inform ation.
OFF Circuit 6 is set to receive Caller ID information (requires CID card).
SW16 ON Circuit 7 is in loop start mode and does not receive calle r ID inform ation.
OFF Circuit 7 is set to receive Caller ID information (requires CID card).
SW17 ON Circuit 8 is in loop start mode and does not receive calle r ID inform ation.
OFF Circuit 8 is set to receive Caller ID information (requires CID card).
Table 2-14. LED indications of LTRK/8 card
LED indication Description
LED1 (LINE BUSY) Turns ON when any trunk on the card is in use.
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CID card (VB-44513): Caller ID Interface Card

The Caller ID card is an interface that attaches to the loop start card (VB-44510) and receives Caller ID infor mation.
The CID card provides 8 circuits. DIP swit ches on the Loop Start Card must be properly set for CID to operate. (See “LTRK / 8 card (VB-44510): Loop Start Trunk Card” on page 2-21 for more information.
Figure 2-17. CID card
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LGTRK / 8 card (VB-44511): Loop Start/Ground Start Trunk Card
The LGTRK/8 card is an interface that accommodates both loop start type analog trunks and ground start analog tr unks. Each trunk circuit type (either ground sta rt or loop start) is specif ied by a program setting as well as by two jumpers settings.
This card is mounted on a flexible slot to connect general analog telephone lines. The LGTRK/8 card provides an 8 circuit trunk interface and can serve the functions
of detection and answering of call signals from the trunk, sending call signals to the trunk, dialing and speech.
The LGTRK/8 card provides a lightening arrester and a safety circuit to directl y connect with general telephone lines.
Note:
To use the LGTRK/8 card, a built-in -48V power supply is required in the same cabinet. The -48V power supply signal gr ound (SG) connector must be properly connected to ground for the ground start trunks to operate correctly.
Each circuit has two jumper connectors (CNX01 and CNX02). When jumpers are installed on both jumper connectors, the circuit is set for Ground Start operation. When the jumpers are not installed, the circuit is set of Loop start operation.
Table 2-15. Ground Start/Loop Start jumper settings of LGTRK/8 card
Jumper Connector
CN101 & CN102 ON Circuit 1 is in ground start mode
CN201 & CN202 ON Circuit 2 is in ground start mode
CN301 & CN302 ON Circuit 3 is in ground start mode
CN401 & CN402 ON Circuit 4 is in ground start mode
CN501 & CN502 ON Circuit 5 is in ground start mode
Jumper Description
OFF Circuit 1 is in loop start mode
OFF Circuit 2 is in loop start mode
OFF Circuit 3 is in loop start mode
OFF Circuit 4 is in loop start mode
OFF Circuit 5 is in loop start mode
CN601 & CN602 ON Circuit 6 is in ground start mode
OFF Circuit 6 is in loop start mode
CN701 & CN702 ON Circuit 7 is in ground start mode
OFF Circuit 7 is in loop start mode
CN801 & CN802 ON Circuit 8 is in ground start mode
OFF Circuit 8 is in loop start mode
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The switch settings and LED indicat ions are the same as for the LTRK/8 card (VB-
44510). See Table 2-12 and Table 2-14.
Figure 2-18. LGTRK/8 card
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DID/8 card (VB-44520): DID Trunk Card

The DID/8 card is a trunk interface that accommodates cards for the DID dedicated incoming function.
The incoming c all address rece iving c ontrol sys tem s upports the i mmediat e and win k method, and supports DP (10 PPS) and DTMF (only for wink) as incoming call address signals. However, an MFR is required when the DTMF is selecte d. MFR is supplied in C PC96, CPC288 and CPC576 card . Additional MFRs are available in an MFR/8 card.
The DID/8 card is mounted on a flexible slot to connect to a DID telephone line, making detection and answering of call signals from the trunk and speech possible.
The DID/8 card provides an 8-circuit trunk interface on the card, and a lightening arrester to directly connect to a DID telephone line.
Note:
same cabinet.
The switch settings and LED indicat ions are the same as for the LTRK/8 card (VB-
44510). See Table 2-12 and Table 2-14.
Figure 2-19. DIDTR 8 card
To use the DID/8 card, a built-in -48V power supply is required in the
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E&M/4 card (VB-44560): E&M Trunk Card

The E&M/4 card is a trunk interface that accommodates cards for the E&M Tie line connections. Typically, tie trunks are used in network connections and for dire ct connections to other PBX systems.
The incoming c all address rece iving c ontrol sys tem s upports the i mmediat e and win k method, and supports DP (10 PPS) and DTMF (only for wink) as incoming call address signals. However, an MFR is required when the DTMF is selecte d. MFR is supplied in C PC96, CPC288 and CPC576 card . Additional MFRs are available in an MFR/8 card.
The E&M/4 card is mounted on a flexible slot to connect to a E&M telephone line. The E&M/4 card provides a 4-circuit trunk interface on the card, and a lightening
arrester to directly connect to a E&M telephone line.
Note:
same cabinet.
Figure 2-20. E&M/4 card
T o use the E&M/4 card, a built-in -48V power supply is required in the
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TBRI/4 card (VB-44530): BRI Card (T-point)

The TBRI/4 car d is a T-p o int ISD N bas ic interface (2 B + D: 192 kbps) accommo dat ion card.
The TBRI/4 card is mounted on a flexible slot to control the basic user network interface of ISDN.
The TBRI/4 card is connected through a Network Termination Unit (NT1) to the ISDN trunk which supports the T-point I SDN basic interface. (Th e NT1 is not provided.)
This card has an on -bo ard , 4-circ u it T-p o int ISD N bas ic interface, and a lightening arrester built-in, and also provides a network clock synchronizing function.
Figure 2-21. TBRI/4 card
Tables 2-1 1, 2- 12 and 2-13 show the switch settings and LED indications.
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Table 2-16. Maintenance switch (SW4) settings of TBRI/4 card
Setting Description
ON Card is in closed status, and can be mounted and remove d when the power is ON.
(Sending/receiving of calls is disabled. If this is set during speech, sending/receiving of calls is disabled after speech ends.)
OFF Normal operation (This switch is set to OFF for normal operation.)
Table 2-17. Circuit select switch (SW1) settings of TBRI/4 card
Switch Position Description
0 OFF (default setting when unit is shippe d) 1 1st interface condition displayed by LAYER1 LED and LAYER2 LED 2 2nd interface condition displayed by LAYER1 LED and LAYER2 LED 3 3rd interface condition displayed by LAYER1 LED and LAYER2 LED 4 4th interface condition displayed by LAYER1 LED and LAYER2 LED
5 to 7 Not used
Table 2-18. LED indication of TBRI/4 card
LED indication Description
LED1
Turns ON when trunk is in use.
(LINE BUS Y) LED2
Turns ON when network synchronization clock is sent.
(SYNC) LED3
Turns ON when synchronization is established.
(LAYER1) LED4
Turns ON when data link (DL) is esta blished.
(LAYER2)
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PRI/23 card (VB-44540): PRI Card

The PRI/23 card is a T-p o int ISD N prim ar y group interface (23B + D/24B: 1544 kbps) and also an S-point ISDN primary group interface accommodation card.
The PRI/23 card is mounted on a flexible slot to connect the system to ISDN (to access ISDN services). It is possible to use either the T- or S-point ISDN primary group interface by setting a switch on the card or by a program setting. By selecting the mode switch on the c ard, 8/16/24 channel modes c an be se lected, however , there are restrictions to the position of the slot to which the card is mounted. This depends on the number of accommodating channels. For details on th e res trictions of the slot position, see page 2-39.
A maximum of three cards can be mounted in each cabinet. When there are six cabinets, a maximum of 18 cards can be mounted.
The PRI/23 card has an on -bo ard lightening arrester, so that the card can be connected to t he carri er trunk corresponding to the T-point primary group interface through a CSU. (The CSU is not provided.)
This clock provides a network clo ck synchr onizing function.
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Figure 2-22. PRI/23 card
Tables 2-14 to 2-17 show the switch settings and LED indications.
Table 2-19. Maintenance switch (SW4) settings of PRI/23 card
Setting Descripti on
ON Card is in closed status, and can be mounted a nd removed when power is ON. ( Send-
ing/receiving of calls is disabled. If this is set during speech, sending/receiving of calls is disabled after speec h ends.)
OFF Normal operation (This switch is set to OFF for normal operation.)
Table 2-20. Dip switch (SW1) settings of PRI/23 card
Switch No. Distance from the DBS 576 to the CSU
0 to 150 ft. 150-450 ft. 450-655 ft.
SW1-1 ON OFF OFF SW1-2 OFF ON OFF SW1-3 OFF OFF ON SW1-4 OFF ON OFF SW1-5 OFF OFF ON SW1-6 OFF ON OFF SW1-7 OFF OFF ON SW1-8 Not used
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Table 2-21. Dip switch (SW2) settings of PRI/23 card
Switch No. Description
SW2-1 ON Sets to "trunk" for T-point.
OFF Sets to "extension line" for S-point .
SW2-2 ON Sets to "other mode" where 1 to 16B+D or 1 to 23B+D channels set by pro-
gram can be used.
OFF Sets to "8ch mode" where 1 to 8B+D channels can be used.
Table 2-22. LED indications of PRI/23 card
LED indication Description
LED1
Turns ON red when B channel is in use. (LINE BUS Y) LED8
Turns ON red when set to adstracting Network synchronizing clock. (SYNC)
LED3
Turns ON red when SLIP abnormality is detected. (SLIP) LED6
Turns ON red when receiving YELLOW alarm signal. (YEL/RA1)
LED4
Turns ON red when receiving AIS signal. (AIS) LED7
Turns ON red during RED alarm. (CFA)
LED5
Turns ON red when fram e fai lu re is d etect ed. (OOF) LED2
Turns ON red when data receiving failure is detected. (LOOP)
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T1 Interface card (VB-44550)

The T1 Interface card is mounted in a flexible slot to connect the system to T1 services. By selecting the mode switch on the card, 8/16/24 channel modes can be selected, however, there are restrictions to the positi on of the slot to whic h the card is mounted. This depends on the number of accommodating channels. For details on the restrictions of the sl ot position, see page 2-39.
A maximum of three cards can be mounted per cabinet. When there are six cabinets, a maximum of 18 cards can be mounted.
The T1 card has an o n-b oard lightening arreste r, so that the card can be connected to the carrier trunk through a CSU (not provided).
This card requires the system sync circuit card be installed for cl ock synchroni zatio n.
Figure 2-23. T1 card
Table 2-23, Table 2-24, and Table 2-25 show the switch settings and Table 2-26 shows the LED indications.
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Table 2-23. Maintenance switch (SW3) settings of T1 card
Setting Descripti on
ON Card is in closed status, and can be mounted a nd removed when power is ON. ( Send-
ing/receiving of calls is disabled. If this is set during speech, sending/receiving of
calls is disabled after speec h ends.) OFF Normal operation (This switch is set to OFF for normal operation.)
Table 2-24. Dip switch (SW1) settings of T1 card
Switch No. Distance from the DBS 576 to the CSU
0 to 150 ft. 150-450 ft. 450-655 ft.
SW1-1 ON OFF OFF SW1-2 OFF ON OFF SW1-3 OFF OFF ON SW1-4 OFF ON OFF SW1-5 OFF OFF ON SW1-6 OFF ON OFF SW1-7 OFF OFF ON SW1-8 Not used
Table 2-25. Dip switch (SW2) settings of T1 card
Switch No. Description
SW2-1 ON Not used
OFF Not used
SW2-2 ON Sets to "other mode" where 1 to 16 or 1 to 24 channels set by program can be
used.
OFF Sets to "8ch mode" where 1 to 8 channels can be used.
Table 2-26. LED indications of T1 card
LED indication Description
LED1
Turns ON red when B channel is in use. (LINE BUS Y)
LED8
Turns ON red when set to adstracting Network synchronizing clock. (SYNC) LED3
Turns ON red when SLIP abnormality is detected. (SLIP)
LED6
Turns ON red when receiving YELLOW alarm signal. (YEL/RA1) LED4
Turns ON red when receiving AIS signal. (AIS)
LED7
Turns ON red during RED alarm. (CFA) LED5
Turns ON red when fram e fai lu re is d etect ed. (OOF)
LED2
Turns ON red when data receiving failure is detected. (LOOP)
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DEC/8 card (VB-44610): Digital Extension Card

The DEC/8 card is an interface accommodating card for digital key telephones (1B+D: 64 kbps + 16 kbps).
The DEC/8 card is mounted in a flexible slot to connect digital extension line terminals (1B+D: digital multi-function telephones and DSS). This card accommodates an on-boa rd 8-ci rcui t extension p ort interface. The connection format is 2-wire non-polari zed home run (sta r) wiring.
The major specifications on wiring are as follows:
• Supply voltage and current to telephone terminal: maximum +24V/200mA
• Allowable wiring distance: maximum 40 ohms with loop to terminal
• Maximum 20 Ohms with loop to DSS/72, EM/24, and Voice Recognition Telephone.
Figure 2-24. DEC/8 card
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AEC/8 card (VB-44620): Analog Extension Card

The AEC/8 card is an extension line interface accommodating unit for standard telephones (SLT). The AEC/8 card is mounted on a flexible slot to connect a standard telephone (SLT) to the system.
The AEC/8 card has an 8-circuit analog extension line interface, and provid es such functions as call signals from a standard SLT, detection of dialing (10 pps/DTMF) and speech.
The supply voltage to a standard SLT is +24V, and a ringer circuit is built-in. The duration of one callup signal from the built-in ringer circuit is a maximum one
second. Control is in three phases when eight trunks are simultaneously cal led up: the first phase for the fir st to thir d circuits, the second phase for the fourth to sixth circuit, and the third phase for the seventh and eighth circuits.
The major specifications on wiring are as follows:
• Supply voltage/current for speech pat h: +24 V/25mA or more
• Loop resistance: 100 Ohms or less
• Ringer signal frequency: 20Hz rectangular wave
• REN: 2
• CPC (Positive AEC Disconnect) control possible
• Ring trip detection possible
Figure 3-25. AEC/8 card
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SBRI/4 card (VB-44630): BRI Card (S-point)

The SBRI/4 card is a basic interface (2B+D: 192Kbps) accommodating card for S­point IDSN.
The SBRI/4 card is mounted on a flexible slot to accommodate terminal extension lines of the basic user network interface of an ISDN terminal.
The system supplies +40V to the ISDN terminal whic h is mounted fo r extension lines.
The SBRI/4 card has an on-board 4-circuit S-point ISDN basic interface, and a lightening arrester.
Figure 3-26. SBRI/4 card
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Table 2-27 and Table 2-28 show the switch settings and LED indications.
Table 2-27. Settings of circuit selection switch of SBRI/4 card
Switch Position LED Indication
0 OFF (default setting when unit is shippe d) 1 1st interface condition displayed by LAYER1 LED and LAYER2 LED 2 2nd interface condition displayed by LAYER1 LED and LAYER2 LED 3 3rd interface condition displayed by LAYER1 LED and LAYER2 LED 4 4th interface condition displayed by LAYER1 LED and LAYER2 LED
5 to 0 Not available
Table 2-28. LED indications of SBRI/4 card
LED indication Description
LED3 (LAYER1)
LED4 (LAYER2)
Turns ON when synchronization is established
Turns ON when DL is establis hed
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MFR/8 card (VB-44110): 8 DTMF Receiver Card

The MFR/8 card is a receiving circuit accommodating card for DTMF signals. The MFR/8 card is mounted in an option slot or flexible slot to receive DTMF
signals which are sent from a standa rd tele phone (SLT) to an extension line. The MFR/8 card also can receive DTMF signals sent from a trunk.
The MFR/8 card provides an on-board 8-cir cu it DTMF receiver circuit. Only one card can be mounted for each cabi net. Table 2-29 shows the relationship betwee n the number of system ports and the maximum number of DTMF cards.
Table 2-29. Mounting restriction of MFR/8 card
Port number 96 to 192 192 to 288 288 to 384 384 to 480 480 to 576
Maximum number of cards
Figure 3-27. MFR/8 card
23456
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CONF card (VB-44120): Conference Card

The CONF card is a conference speech card. The CONF card is mounted in a flexible slot to support two eight-party conferences.
Figure 3-28. CONF card
CAUTION:
• Don’t change the switches on the CONF card from the default setting. SW1, SW2 and SW3 must be set "OFF". Otherwise, the mounting slot position of the CONF card and othe r cards are restricted.
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ACD card (VB-44140): ACD card

The ACD card is an Automatic Call Distribution (ACD) card which is mounted in the main cabinet.
By using the ACD card wi th on e VPU/4 card (VB -44160) , sim plified AC D func tions such as the incoming call distr ibuting function and processed call number information for each terminal can be supported.
MIS reports may be sent output through an RS-232C port to either a printer or PC computer. This port is mounted in the ACD unit. This port requires a dedicated RS­232C cable.
Only one ACD card can be mounted for each cabinet. A maximum of two ACD cards may be used in a system.
The ACD card option and the build in voice mail option cannot be installed in the same cabinet.
For more information on the ACD card installati on an d the A CD op tion in general, see Section 520 - ACD Reference.
Figure 3-29. ACD card
The following tables show the switch settings and LED indications.
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Table 2-30. ACD Card Switch Settings
Switch No. Setting Description
SW1 BACK UP Set when retaining RAM data.
INITIAL Set when clearing RAM data.
SW2 ON LINE Normal operation (set to ON LINE during regular operation)
OFF LINE Not used.
Table 2-31. ACD Card LED Indications
LED Display Description
LED1 (CPU RUN)
Blinks when the CPU is in operation.
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VPU/4 card (VB-44160): 4-voice Processing card

The VPU/4 card can support simplifi ed voice mail functions by using this card with the VSSC card (VB-44170). This card c an a lso be used as a voi ce proce ssing card for ACD when combined with the ACD card (VB-44140).
Two types of VPU card s are avai l abl e; the VPU/8 card and the VPU/4 (VB-44150). The VPU/8 provides 8 voice paths to the voic e mail system while the VPU provides 4 voice paths. Up to two VPUs of any type may be installed along with a VSSC card in a single cabinet to support built- in voice mail.
The VPU/4 card and ACD card (VB-44140) may be installed together in a sing le cabinet to support ACD.
Figure 3-30. VPU/4 card
The following table describes LED indications.
Table 2-32. VPU/4 Card LED Indication
LED Display Description
LED1-LED4 (RUN)
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Blinks when the CPU is in operation.
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VPU/8 card (VB-44150): 8-voice Processing card

The VPU/8 card is a voice processing car d for voice mail (t wo-way), and is mounted in the main cabinet.
Two types of VPU card s are avai l abl e; the VPU/8 and the VPU/4 (VB-44150). The VPU/8 provides 8 voice paths to the voice mail system while the VPU provides 4 voice paths. Up to two VPUs of any type may be installed in a single cabinet and must be combined with the VSSC card (VB-44170) to support voice mail.
The VPU/8 card cannot be used with the ACD card (VB-44140).
Figure 3-31. VPU/8 card
The following table describes LED indications.
Table 2-33. VPU/8 Card LED Indication
LED Display Description
LED1-LED8 (RUN)
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Blinks when the CPU is in operation.
Section 300-Installation Chapter 2. System Overview

VSSC card (VB-44170): Voice Storage Service card

The VSSC card is a voice s tor ag e card for built-in voice mail (two-way), and is mounted in the main cabinet.
The VSSC card provides a hard disk to st or e voice data of voice mai l. This c ard must be combined with one or two VPU cards (VPU/8 card and/or VPU/4 card).
Only one VSSC card can be mounted in each cabinet. This card must be inst alled into FS1 1. FS 12 must be left vaca nt. A maximum of four
VSSC cards can be mounted in a single system.. The VSSC card and the ACD card (VB-44140) cannot be used together in the same
cabinet. For more information on the Built- in voice mail option, see Section 510 - Built-In
Voice Mail Reference Manual.
Figure 3-32. VSSC card
The following tables show the switch settings and LED indications.
Note:
The Hard Disk Drive and the back up battery must be replaced every
three years.
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Table 2-34. VSSC Card Switch Settings
Switch No. Setting Description
SW1 BACK UP Set when retaining RAM data.
INITIAL Set when clearing RAM data.
SW2 ON LINE Normal operation (set to ON LINE during regular operation)
OFF LINE Set when replacing the HDD system.
Table 2-35. VSSC Card LED Indications
LED Display Description
LED1
Blinks when the CPU is in operation.
(CPU RUN) LED2 Not used. LED3 Not used.
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API card (VB-44131)

The API card is an interface card for applications such as voice mail and ACD. The external interface is an RS-232C port (maximum 19200 bps). Only one API card can be mounted for each system. This sheet is mounted to on
option slot (OP1 or OP2) or on an expansion slot (FS1 to FS12).
Figure 3-33. API card
Tables 2-21 to 2-23 show the switch settings and LED indications.
Table 2-36. Maintenance switch (SW1) settings of API card
Setting Description
ON (top) Card is closed and can be mounted and removed when power is ON. (Sending/
receiving of calls is disa bled. If this is set during spe ech, sen ding/receiving of calls is disabled after speech ends.)
OFF (bottom) Normal operation (This switch is set to OFF for normal operation.)
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Table 2-37. Internal diagnosis switch (SW2) settings of API card
Setting Descripti on
ON (top) Normal operation (This switch is set to ON for normal operation.) OFF (bottom) Normal operation (This switch is set to OFF for normal operation.)
Table 2-38. Memory backup switch (SW3) settings of API card
Setting Descripti on
ON (top) Self-diagnosis API car d OFF (bottom) Can delete memory data of API card.
Table 2-39. LED indications of API card
LED indication Description
LED1 (RUN)
Flashes green when LPU is operating.
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Chapter 3. Cabinet Installation

This chapter explains how to prepare for a singl e cabinet insta llation , how to remove and replace the cabinet cover, install the bat tery and install cards.

Installation Location

Guidelines

• Before deciding where to install the single base cabinet, check the external dimensions shown below, the area required for maintenance, and the "Environmental Conditions" described in Chapter 1 (page 1-4).
Figure 3-1. Single base cabinet dimensions and maintenance area
Notes
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o
:
Hatched area indicates the area that should be provided for mainte­nance.
o
The dimensions shown in parenthesis indicate the dimensions required when the MDF interface cable is wired from the right of the cabinet.
Chapter 3. Cabinet Installation Section 300-Installation

Removing and Replacing Covers

Guidelines

CAUTION:
• Turn the power switch and the externa l breaker OFF, and disconnect the AC cable before removing any covers.
• Both left and right side covers can be removed. The following describes how to install and remove the left side cover. The identical procedure can be used for the right side cover.
• Replace the respective covers after the installation work has been completed.
3-2 DBS 576 (USA), issued 6/2/98 576-13-300
Section 300-Installation Chapter 3. Cabinet Installation

Front Cover

Installation

Removing the front cover
1. Remove the four screws from the front cover.
2. Pull the bottom of the front cover out by about 3/4”.
Note: Do not exert excessive force when pulling out the bottom of the front c over
as doing so may distort the claw slots.
3. Gently lift the cover off by sliding it up and away.
Replacing the front cover
1. Hook the front cover onto the front cover mounting claws of the cabinet.
2. Secure the four screws.
Figure 3-2. Removing and replacing front cover of base cabinet
576-13-300 DBS 576 (USA), issued 6/2/98 3-3
Chapter 3. Cabinet Installation Section 300-Installation

Side cover

Installation

Removing the side cover
Note: The front cover must be removed before the side cover may be removed.
1. Remove the two screws from the side cover.
2. Open the edge (with the screws) of the cover about 1”.
Note: Do not exert excessive force when pulling out the side cover as doing so may
damage the claw slots.
3. Gently lift the cover off by sliding it forwards.
Replacing the side cover
1. Hook the side cover onto the top and bottom side cover mounting claws of the
cabinet.
2. Secure the two screws.
Figure 3-3. Removing and replacing side cove r of base cabinet
3-4 DBS 576 (USA), issued 6/2/98 576-13-300
Section 300-Installation Chapter 3. Cabinet Installation

T op Cover (Base Cabinet Only)

Installation

Removing the top cover
Note: The front cover must be removed before the top cover may be removed.
1. Remove the two screws from the top cover.
2. Pull the top cover out about 2”.
Note: Do not exert excessive force when pulling the top cover as doing so may
damage the claw slots.
3. Gently lift the top cover off by sliding it up and forwards.
Replacing the top cover
1. Hook the top cover onto the top cover mounting claws of the cabinet.
2. Secure the two screws.
Figure 3-4. Removing and replacing top cover of Base Cabinet
576-13-300 DBS 576 (USA), issued 6/2/98 3-5
Chapter 3. Cabinet Installation Section 300-Installation

Cabinet Installation

Guidelines

CAUTION:
• Turn the power switch OFF, and make certain the AC cable is disconnected before installing the cabinet.
• Handle the cabinet carefully to avoid damage.
• Do not attempt to move the cabinet without assistance.
• The cabinet is heavy and should be secured to a wall so that it does not topple in the event of earthquake, etc.
• Remove all cabinet covers before installa tion (see page 3-2).
• If you are installing two or more cabinets, refer to Chapter 4, "Installing Additional cabine ts" (page 4-1).

Floor Mounting Installation

1. Drill 4 holes in the floor for bolt anchors.
Note: Check the positions of the 4 bo lt holes in the bottom of the cabine t, shown in
Figure 3-1, before drilling the holes.
2. Bolt the cabinet to the anchors in the floor through the bolt hole s in the bottom
frame.
Figure 3-5. Securing the cabinet to the fl oor (base cabinet shown)
3-6 DBS 576 (USA), issued 6/2/98 576-13-300
Section 300-Installation Chapter 3. Cabinet Installation

Wall Mounting Installation

Prior to mounting the DBS 576 to the wall, the plywood mounting backboard must be prepared as follows:
• Use 1/2” or larger plywood sized for the complete DBS 576 system.
• Secure the board to the wall with at least four #10 1 3/4” sheet metal screws for a single cabinet system. Each screw must be installed to the metal studs.
• Two or more additional screws should be installed into the metal studs for each additional cabine t to suppor t the additional weight.
Figure 3-6. Cabinet plywood mounting backboard
1. Attach wall-mounting brackets on the rear of the cabine t as shown in the figure below.
Figure 3-7. Wall-mounting Installation: Attaching the Wall-mounting Bracket
576-13-300 DBS 576 (USA), issued 6/2/98 3-7
Chapter 3. Cabinet Installation Section 300-Installation
2. T emporarily fasten the 4 wal l-mounting screws (#10 flat head recommended) to the wall.
3. Lift up the Base cabinet, and hook it onto the 4 screws that are temporarily fastening the wall- mounting angle.bracket.
4. Completely tighten the temporarily fastened screws.
Figure 3-8. Wall-mounting Installation: Attaching the Wall-mounting of cabinet-1

Grounding

Guidelines

CAUTION:
• Turn the power switch OFF, and make certain the AC cable is not plug in before grounding the cabinet.
• Be sure to attach an EMI filter to the AC cable to reduce EMI interference.
• For safety reasons, the DBS 576 must remain grounded at all times. This ground may be either via the power supply ground or the attached ground lead.
• The service ground cable must be 14 A WG minimum. It is rec ommend that the ground cable at least 12 AWG (stranded).
• Resistance to ground must be 10
3-8 DBS 576 (USA), issued 6/2/98 576-13-300
Ohms
or less.
Section 300-Installation Chapter 3. Cabinet Installation

Installation

1. Connect the Frame Ground terminal on the top of the front panel of the power
supply unit to the cabinet chas sis using a grounding wire.
2. Connect the base cabinet chassis to the building se rvice ground using a
grounding wire.
3. Connect the AC cable or Ground cable to the cabinet chassis.
4. Install an EMI filter on the AC cable.
Figure 3-9. Grounding the Master Cabinet

Battery Backup (VB-44025)

Guidelines

CAUTION:
• Turn the power switch and the externa l breaker OFF, and disconnect the AC cable before installing the backup battery.
• Carefully note the polarity of the batterie s to prevent shorting.
• When installing batteries for battery backup, each cabinet must have a separate
set of batteries.
• The battery cable must be at least 18 AWG.
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Chapter 3. Cabinet Installation Section 300-Installation
• With normal condition, the backup batteries last for about 20 minutes.
• The backup batteries should be replaced about every 3 years.
THE PRODUCT YOU HAVE PURCHASED MAY CONTAIN SEALED LEAD ACID BATTERIES WHICH ARE RECYCLABLE. AT THE END OF THEIR USEFUL LIFE, UNDER VARIOUS STATE AND LOCAL LAWS, IT IS ILLEGAL TO DISPOSE OF THESE BATTERIES INTO YOUR MUNICIPAL WASTE STREAM. PLEASE CALL 1-800-SAV-LEAD FOR INFORMATION ON HOW TO RECYCLE TH E SE B A TT ER I ES.

Installation

1. Connect the red +24V cable to the + terminal of battery B.
2. Connect the blue GND cable to the
3. Using the supplied 8-inch blac k battery cable to the to the
- terminal of battery B.
4. Slide the batteries into the guides in the cabine t.
Figure 3-10. Installation of backup batteries (VB-44025)
- terminal of battery A. + terminal of battery A and
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Section 300-Installation Chapter 3. Cabinet Installation

-48 Volt Power Supply (VB-44022)

Guidelines

CAUTION:
• Turn the power switch and the externa l breaker OFF, and disconnect the AC cable before installing the -48V power supply.
• Any cabinet that contains an E&M Tieline Card, Ground St art/Loop Start Card or DID Card must have a -48 Volt Power Supply.
• Each cabinet must have a separate -48 Volt Power Supply.

Installation

1. Turn the power switch and the external breaker OFF, and disconnect the AC
cable.
2. Insert the -48 Volt Power Supply into the -48 volt power supply slot as shown in
Figure 3-11.
3. Secure the -48 Volt Power Supply into place by inserting the supplied lock
washer and screw into the front tab.
4. Connect the provided 5-conductor power cable to the power connector on the
front of the -48volt power supply.
5. Connect the green lead to the cabinet ground terminal as shown.
6. Connect the black lead to the - 48 Volt terminal of the power supply.
7. Connect the orange lead to the SG terminal of the power supply.
8. Connect the red lead to the 24 Volt terminal of the power supply.
9. Connect the blue lead to the GND terminal of the power supply.
10. Connect the supplied green wire from the SG ter minal of the power supply to
the upper Power Supply ground screw.
11. Reconnect the AC cable, turn the external breaker to ON and turn the power
switch to ON.
576-13-300 DBS 576 (USA), issued 6/2/98 3-11
Chapter 3. Cabinet Installation Section 300-Installation
Figure 3-11. Installation of -48 Volt Power Supply (VB-44022)
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Section 300-Installation Chapter 3. Cabinet Installation

Card Installation

Guidelines

• Install the cards in the slots indicated under "Card Installation Position" in Chapter 4 (page 4-33).
Note that cards may be damaged if installed in other than the specified slots.
• T h ere is a lim it to the numb e r of PRI/23 and CONF cards that can be ins talled in the flexible slots . Pl ease observe the restrictions descr ibed under "Card Installation Pos ition" in Chapter 4 (page 4-33).
• Group the cards installed in the flexible slots as described Chapter 4 (page 4-33).
• When the system is to be automatically initialized, insta ll the specified cards in the positions where they are automat ically set. (See Section 400 - Programming for more information.. )
Figure 3-12. Typical Initial configuration for automatic starting of base cabinet system
• The DEC/8 card for connecting customized telephones must be installe d in the first slot of the internal line group.
• Refer to "Installing Additional Cabinets" in Chapter 4 (page 4-1) if using two or more cabinets.
576-13-300 DBS 576 (USA), issued 6/2/98 3-13
Chapter 3. Cabinet Installation Section 300-Installation

Installation

CAUTION:
• With the exception of selecte d cards as described in “Maintenance Switches” on page 5-1, many cards requir e power to be OFF before installing or removing the car ds. Turn the power switch OFF and make certain the AC cable is disconnected before installing cards.
• Push the cards in so that they are securely seated. Failure to do so may result in the card being damaged. The card circuits inclu de CMOS-ICs, which are susceptible to damage by static electricity .
• To avoid damaging the CMOS-ICs, observe the following precautions when handling the cards:
1) Touch a ground or the cabinet to disch arge any static that
may have built up on your body.
2) Do not directly touch the CMOS-ICs or electrical conductors.
1. With the letter ing on the card pointing up, slide the card into the guide of the card slot in the cabinet.
2. Hold the card on the top and bottom edges wi th both hands and carefully push it into the slot.
3. When the connector row at the far end of the card touches the correspond ing connector on the unit, press the card in somewhat more firmly until it is seated.
4. Repeat steps 1 through 3 for all other cards.
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Section 300-Installation Chapter 3. Cabinet Installation
Figure 3-13. Unit card installation in cabinet
576-13-300 DBS 576 (USA), issued 6/2/98 3-15
Chapter 3. Cabinet Installation Section 300-Installation
3-16 DBS 576 (USA), issued 6/2/98 576-13-300

Chapter 4. Installing Additional Cabinets

The 576 syste m can be expanded using a building block system. It is also possible to increase the number of extension ports by linking the DBS 576 to a DBS 96.
This chapter explains how to prepare for additional cabinets, install them, link the respective systems, set the expansion cabinet ID No., install the switch box and options, install cards and connect to the DBS 96.

Installing the Building Block System

Installation Location

Guidelines

Before deciding where to inst al l the building block system, check the external dimensions and the maintena nce are a shown below and the "Environmental Conditions" described in Chapter 1 (page 1-4).
Figure 4-1. Building block system dimensions and maintenance area
Notes:
576-13-300 DBS 576 (USA), issued 6/2/98 4-1
Shaded area indicates the area that should be provided for maintenance.
-
Chapter 4. - Installing Additi onal Cabinets Section 300-Installation

Installation

Guidelin es

CAUTION:
• Turn the power switch OFF and make certain the AC cable is disconnected before insta lling.
• Handle the cabinet carefully to avoid damage.
• Do not attempt to move the cabinet without assistance.
• The cabinet is heavy and should be well secured in the event of earthquake, etc.
• Remove the cabinet covers before installing the cabinets (see “Removing and Replacing Covers” on page 3-2).
• See Figure 4-1 for example combinations of cabinets using the build ing bloc k method.
• The description of how to use the building block method to set up a system is based on an example of expanding the number of ports to 576. Please use this example as a basis for setting up systems with different numbers of ports.
4-2 DBS 576 (USA), issued 6/2/98 576-13-300
Section 300-Installation Chapter 4. - Installing Additional Cabinets
Figure 4-2. Example cabinet combinations using building block method
Notes: - The bottom cabinet in a column must be a base cabinet (VB-44020). These are indi-
cated by the double lines. The other cabinets in a colum n should be expansion cab­inets (VB-44021).
- The cabinet that contains the CPC card is called the Control cabinet since it “controls” the system.
The 1 to 5 shown above are the ID numbers of the additional cabinets. If you are
-
installing two or more cabinets, each added cabinet must have the designated cabi­net ID No. (see page 4-27).
If you are adding cabinets to an existing system, add them using the layouts indi-
-
cated by the arrows above. If the Control cabine t is on the left , the IDs shoul d be numbered vertically in the same order as shown below.
576-13-300 DBS 576 (USA), issued 6/2/98 4-3
Chapter 4. - Installing Additi onal Cabinets Section 300-Installation
Building Block Method (floor-mounting) Installation (576-port example shown)

Installation

1. Attach wall-mounting brackets on the rear of all cabinets that are to be installed. The direction that the wall- moun ting brackets are attached varies accor ding to the position ( bottom, middl e or top rack) where the cabin ets are instal led. Att ach the wall-mounting bracke ts according to the figures below.
Figure 4-3. Floor-Mounting Installation: Attaching the Wall-Mounting Bracket
Note:
Base Cabinet : cabinet installed on bottom rack Expansion Cabinet-1 : cabinet installed on middle rack Expansion Cabinet-2 : cabinet installed on top rack
2. Place Expansion Cabinet-1 on top of the Base cabinet.
3. Attach the joining sections on the front sides of the Base Cabinet and Expansion Cabinet-1 with 2 screws.
4. Attach the 2 Side Joint Plates onto the joining sections on the sides of the Base Cabinet and Expansion Cabinet-1 with 8 screws.
5. Attach Expansion Cabinet-2 following steps 2. to 4.
4-4 DBS 576 (USA), issued 6/2/98 576-13-300
Section 300-Installation Chapter 4. - Installing Additional Cabinets
Figure 4-4. Floor-mounting Installation: Vertical Joining
6. Attach the other Base Cabinet, Expansion Cabinet-1 and Expansion Cabinet-2 following steps 2 to 5.
7. Attach the 12 Horizontal Joint Plates (front: 6, rear: 6) onto the front and rear sides of each of the left and right cabinets with 24 screws. (The Horizontal Joint Plates are part of the VB-44024 expansion braket kit and must be separately purchased.)
8. Drill 4 four holes in the floor to attach the cabinet to the floor, and drive in hole­in-anchors.
Note: 4 holes should be drilled i n the floor on both sides of the join ed left and right
Base Cabinets. Before drilling the holes check the drilling hole pitch referring to Figure 4-4.
9. Place the cabinet close to the wall.
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Chapter 4. - Installing Additi onal Cabinets Section 300-Installation
10. Align t he screw hol es on t he base pla tes of th e joined l eft and right Base c abinet s with the hole-in-anchors driven into the floor, and attach with bolts.
11. Attach the wall-mounting angle plates of the left and right Expa nsion cabinet-2 with 4 wall-mounting screws (#10 flat head screws recommended).
Figure 4-5. Floor Mounting Installation: Vertical/Horizontal Joining
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Section 300-Installation Chapter 4. - Installing Additional Cabinets
Building Block Method (wall-mounting) Installation (576-port example shown)

Guidelines

CAUTION:
• When all 6 cabinets have been attached to the wall, the wall will be subjected to a load of about 90 pounds. Before at taching the cabinets to the wall, check the strength of the wall to make sure that it c an withstand this load.

Installation

1. Attach wall-mounting brackets on the rear of all cabinets that are to be installed. The direction that the wall- moun ting brackets are attached varies accor ding to the position ( bottom, middl e or top rack) where the cabin ets are instal led. Att ach the wall-mounting bracke ts according to the figures below.
Figure 4-6. Wall-mounting Installation: Attaching the Wall-mounting Bracket
Note:
Base cabinet : cabinet installed on bottom rack Expansion cabinet-1 : cabinet installed on middle rack Expansion cabinet-2 : cabinet installed on top rack
2. Temporaril y fas ten th e 4 wa ll-mountin g sc rews to the wall. (#10 fla t head s crews recommended.)
3. Lift up the left Base cabinet, and hook it onto the 8 screws that are temporarily fastening the wall- mounting angle.bracket.
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Chapter 4. - Installing Additi onal Cabinets Section 300-Installation
4. Completely tighten the temporarily fastened screws.
5. Attach the right Base cabinet following steps 3. and 4.
Figure 4-7. Wall-mounting Installation: Attaching the Wall-mounting of cabinet-1
6. Attach the 2 Horizontal Joint Plates onto the joining sections on the front of the left and right Base cabinets with 4 scre ws. ( The Horizontal Joint Plates are part of the VB-44024 expansion braket kit a nd must be separ ately purchased.)
7. Attach the left and right Expansion cabinet-1 onto the wall following steps 2 to
6.
8. Attach the joining sections on the front of the left and right Base cabinet and Expansion cabinet-1 with 4 scre ws.
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Section 300-Installation Chapter 4. - Installing Additional Cabinets
Figure 4-8. Wall-mounting Installation: Attaching the Wall-mounting of cabinet-2
9. Attach the 2 Side Joint Plates onto the joining sections on the sides of the left and right Base cabinet and Expansi on cabine t-1 with 8 screws.
10. Attach the left and right Expansion cabinet-2 onto the wall following steps 2. to
3.
11. Attach the joining section on the fronts of the left and right Expansion cabinet-1 and Expansion cabinet- 2 with 4 screws.
12. Attach the 2 Side Joint Plates onto the joining sections on the sides of the lef t and right Expansion cabinet-1 and Expansion cabinet-2 with 8 screws.
576-13-300 DBS 576 (USA), issued 6/2/98 4-9
Chapter 4. - Installing Additi onal Cabinets Section 300-Installation
Figure 4-11. Wall-mounting Installation: Attaching the Wall-mounting of cabinet- 3
4-10 DBS 576 (USA), issued 6/2/98 576-13-300
Section 300-Installation Chapter 4. - Installing Additional Cabinets

Installing Switch Boxes (VB-44023)

Guidelines

WARNING:
• THE SWITCH BOX POWER WILL NOT BE CUT OFF EVEN IF THE POWER SWITCH ON THE BASE CABINET IS TURNED OFF. MAKE CERTAIN THAT ALL AC CABLES ARE DISCONNECTED FROM THE POWER OUTLETS TO AVOID THE POSSIBILITY OF ELECTRICAL SHOCK.
• TURN THE POWER SWITCH OFF BEFORE INSTALLING THE SWITCH BOX.
• CAREFULLY NOTE THE POLARITY WHEN WIRING TO PREVENT SHORTING.
Caution:
• To suppress noise, be sure to install an EMI filter on the AC cable.
• The following describes how to install the AC cables for the optional VB-44023 switch box.
• The switch box allows you to t urn the power on a nd of f to one ba se cabin et and up to two expansion cabinets from one switch.
• If one or more expansion cabinets are attached to a base cabinet, a switch box must be installed in the base cabinet. For instance, a fully expanded system requires two switch boxes.
• The power to each of the c abinets is controlled by switching the power supply for the base cabinet. After compl eting installation and before replac ing the covers of the cabinets, turn ON
the power switches of each expansion cabinet.
576-13-300 DBS 576 (USA), issued 6/2/98 4-11
Chapter 4. - Installing Additi onal Cabinets Section 300-Installation

Installation

Removing AC cables
1. Disconnect the AC cables from the power units and remove the ground wires .
2. Remove AC cable from the cord bracket and cable clamp and discard AC cable.
Figure 4-12. Removing AC cable
Installing Switch Box
1. Position the switch box on the guide lugs in the base cabinet.
2. Secure the switch box with the screw.
Figure 4-13. Installing the Switch Box
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Section 300-Installation Chapter 4. - Installing Additional Cabinets
3. Attached the AC input power cable bushing (strain relief) to the side of the
cabinet.
Figure 4-14. Attaching AC cable to cabinet
4. Secure the AC input power cable to the cabinet using the cable clamp.
5. Attach power leads to the Switch Box.
6. Attach the power cable frame ground.
Figure 4-15. AC Power Cable Connection to Switch Box/Frame Ground
576-13-300 DBS 576 (USA), issued 6/2/98 4-13
Chapter 4. - Installing Additi onal Cabinets Section 300-Installation
7. Plug the power supply to the switch box AC cables into the connectors on the
switch box. The AC cable of top and middle cabinet must be connected to EXP connector of the switch box, and AC cable of ba se cabinet must be connecte d to BASE connector of the switch box.
Figure 4-16. Switch Box to Power Supply AC Cable Connections
4-14 DBS 576 (USA), issued 6/2/98 576-13-300
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