Vodavi Infinite Dvx I, Dvx Ii Hybrid Key Telephone Systems Installation Manual

							GElQERAL DESCRIPTIOl?I 
iqfinite DVX’amiDVX” 
Digital Key Telephone Systems 
4 Backup of customer database RAh4 
memory via a ‘Super Cap” (super capaci- 
tar) . 
System software is provided in EPROM 
memory and is installed on the main key 
service board. The system contains 512K 
of EPROM storage and is equipped with 
128K of ‘battery--backed static RAM. Pro- 
visions have been made on the card to 
address up to two megabytes of EPROM 
memory and up to two megabytes of static 
RAM. 
LEDS & Indicators: 
Four green LEDs are located on the main 
key service board along the top of the PCB, 
Two of the LEDs (DS2 & DS3) indicate the 
presence of +5V h -5V dc. LEDs DSI and 
DS5 indicate the present of +12V dc used 
to supply power to the key stations (one 
LED per four stations). An extinguished 
JLED indicates the absence of the associ- 
ated voltage. 
A red LED (DS4) located in the lower right 
portion of the main key service board pro- 
vides a system “heart beat” indication. 
co Line/station 
lntcrhces: 
The Basic Key Service Unit (BKSUJ con- 
tabs the necessary circuitry to connect 
four CO/Centrex/P3X loop start lines and 
eight digital key telephones to the system. 
This card also contains one additional 
voice ~transmit) path for external paging. 
The main key service board contains four 
Central Of&e, Centrex or PBX loop start, 
line interfaces. The protection circuitry to 
allow the system to be classified as a fully 
protected system are located on the card 
for each CO clrcuit. The CO circuits are 
a equipped with current sensing circuitry 
that fdentifkzs distant end disconnect Qoop 
supervision). Each CO line interface design 
also provides properfusing or protection to 
comply with the rc@rements of UL 1459 
Second F&ion and CSA C22.2 No. 225 
standards. CO lines are connected to the 
system via RI- 11 modular jacks mounted 
on the bottom of the main key semce 
board. 
The main key service board also provides 
the interface for eight Digital Key Tel+ 
phones using two 64K channel me- 
me&s. Stations connect to the board via 
the MDF thrcmgh a 50-pan connector lo- 
cated inside the Basic KSU. Each station connection requires four wires to connect 
to the board. 
A Digital DSS Console. Single Line Tele- 
phone Adapter (OPX) or other specifically 
designed adapter with a digital interface 
can be assigned to any one of the interface 
circuits. ‘Ihe key station interface circuits 
are protected from mis-wiring and over- 
current. 
The main key service board also contains 
an on-board modem that is capable of 
transmitting data at a rate of 300 Baud. 
The modem supports and is compatible 
with the Hayes command protocol. The 
Bell System (Western Electric] standards 
103 and 212A for modem design is incor- 
porated into the design af this modem. The 
modem operates on-line in both Full and 
Half duplex modes. An optional 1200 Baud 
module may be added to the main key 
service unit to allow transmission at the 
rate of 1200 Baud. 
B. DVX’ Erpansion ESUwith Power 
SUPflY m=Jl 
The Expansion Key Service Unit (EKSU) is 
a unit which comes equipped with a pawer 
supply and circuitry providing four addi- 
tional loop start CO/PBX/Centrex line 
ports and eight digital key telephone ports 
to the Expansion KSU. All prccessing and 
control functions as well as voice connec- 
tions and switching are controlled by cir- 
cuitry on the Basic KSU and transmitted 
to the Expansion KSU through the ribbon 
cables. 
The ma.iu key service board on the Expan- 
sion KSU allows connection of one optional 
application module (i.e. DTMF Receiver) to 
the system and connector(s] for installing 
an additional 2x4 Expander Module, 2x4 
SLT Expander Module or a 4x8 Expander 
Module. Refer to F’igurc 200-2 Main Key 
Service Board of the Expansion KSU 
Power Supply 
The power supply, installed in the Expan- 
sion KSU at the time of manufacture, has 
an input voltage of 117V ac *I@?&. The 
power supply provides power, a ffltered/ 
unregulated +12V dc, to the Expansion Key 
Service Board WKSB). A slo-blow 1.5 amp 
fuse on the AC side of the transformer 
provides the necessary fire and overload 
protection. Power is regulated and distrib- 
uted to staffons/circui~ in the system on 
the main key service board on the Expan- 
200-4 tEIsue 1. Janaary 1095  
						

							iqjinfte DVX’ and DVX * 
~&&al Xcy Telephone Systems GENERAL DESCRIPTION 
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Issue 1, January 1993 
200-S  
						

							i@dte DVX I and BITE” 
Digital Key Ttlephone Systems 
sion KSU. The power supply and cabinet 
meet all safety requirements to comply 
with UL 1459 Second Edition and CSA 
C22.2 No. 225 standards. 
LEDS a IndicatoI8: 
Four green LEDs are located on the main 
key service board on the Expansion KSU. 
Two of the LEDs (DS2 & DS31 indicate the 
present of +5V & -5V. LEDs DSZ and DS5 
indicate the present of +12V dc used to 
supply power to the key stations (one LED 
for every four stations). An extinguished 
LED indicates the absences of the associ- 
ated voltage. 
co Line/station 
Intcrfkcts 
The Expansion KSU contains the neces- 
sary circuitry to connect an additional four 
CO/Centrex/PBX loop start lines and 
eight dgital key telephones to the system. 
‘ibis card also contains one additionaf 
voice (lransmit) path for ex.temal paging. 
The main key service board on the Expan- 
sion KSU contains four Central Office, 
Centrex or PBX loop start, line interfaces 
The protection circuttry to allow the system 
to be classtied as a fully protected system 
are located on the card for each CO circuit. 
The CO circuits are equipped with current 
sensing circuitry that identJfies distant end 
disconnect (loop supervision). Each CO 
line interface design also provides proper 
fusing or protection to comply with the 
requirements of UL 1459 Second Edition 
and CSA C22.2 No. 225 standards. CO 
lines are connected to the system vfa RJ- 11 
modular jacks mounted on the bottom of 
the main key service board of the &pan- 
sion KSU. 
The main key service board also provides 
- the interface for eight digital key tele- 
phones using two 64K channel arrange- 
ments. Stations connect to the board via 
the MDF through a ?jO-pin connector lo- 
cated inside the Expansion KSU. Each sta- 
tion connection requires four wires to 
connect to the board, 
A Digital DSS Console, a Single Line Tele- 
phone Adapter (OPXI or other spec%eally 
designed adapter with a digital titerface 
can be assigned to any one of the interface 
circuits. ‘Ihe key station interface circuits 
are protected from mis-wlrlng and over- 
current. 
. 
Zoo-6 Iaue1,JanumylB93  
						

							i&mite DVX’andDVX’ 
Digital Kty Telephone Systems GENERAL DESCRIETION 
C. 2x4 Expander Module 
LED8 & Illdicators: 
The 2x4 Expander Module is a two CO by 
four key station interface module that 
plugs onto the main key service board of 
the Basic KSU or the main key service 
board of the Expansion KSU through the 
use of two ribbon cables. This module is a 
combination board that contains the nec- 
essary circuitry to connect two CO/Cen- 
trex/PBK loop start lines and four digital 
key telephones to the system. ‘Ibis card 
also contains one additional voice [trans- 
raft) path for external paging. and a con- 
nector for adding one apphcation module 
(i.e. IYIMF Receiver] to the system. Three green LEDs are located on the 2x4 
Expander Module. ?‘wo of the LEDs (DS3 & 
DS2) indicate the presence of +5v & -5v dc. 
LED DS1 monitors the +12V dc used to 
supply power to the key stations. An extin- 
guished L.ED indicates the absence of the 
associated voltage. 
co UJle~station 
IIItclfaces: 
‘Ibe 2x4 Expander Module provides the 
interface for two Centi Of&e, Centrex or 
PBX loop start Ifnes. The protection cir- 
cuitry necessary to atfow the system to be 
classified as a fury protected system are 
located on the card for each CO circtit. 
The CO circuits are equipped with current 
sensing circuitry that identifies distant end 
disconnect floop supervfsion). The module 
design also provides proper fusing or pro- 
tection to comply with the requirements of 
UL 1459 Second Edition and CSA C22,2 
No. 225 standards. CO lines are connected 
to the system via RI-1 1 modular connec- 
tors mounted on the bottom edge of the 
board. The 2x4 Expander module also pro- 
vides the interface for four digital key tele- 
phones using two 64K channel 
arrangements. Stations connect to the 
board via the MDF through a 5%pin con- 
nector located on the main key service 
board inside the Basic KSU or a similar 
connector on the main key service board 
when installed in the Expansion KSU. 
Each station connection requires four 
wires to connect to the board. 
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Figure 200-S -4 Expander Module A Dig&l DSS Console. a Single Line Tele- 
phone Adapter (OFT), or other spec&ally 
designed adapter with a digital interface 
CZUI be assigned to any one of the interface 
ciradts. The key station interface circuits 
are protected fi-om m&wiring and over- 
currtrlt.  
						

							hifinite DVX’ axid DVX” 
D&itaI Key Telephone Spsttme 
D. 2x4 SLT Expander Module 
The 2x4 SLT Expander Module is a two CO 
by four single line telephone Interface mod- 
ule that plugs onto the main key service 
board of the Basic KSU or the main key 
service board of the Expansion KSU 
through the use of two ribbon cables, This 
module is a combination board that con- 
tains the necessary circuiby to connect 
two CO/Centrex/PBX loop start lines and 
four single line telephones to the system. 
This card also contains a connector for 
adding one application module (i.e. D?MF 
Receiver) to the system. 
Message Waiting capability comes in- 
stalled on the 2x4 SLT Expander Module. 
This circuitry provides message waiting 
voltage to single line telephones equipped 
with m-waiting lamps, and supports 
up to four single line telephones message 
waiting lamps at 9W dc typical across tip 
0 
F%Wc 200-Q 2x4 SLT Expaadcr Module 
LEIM & Indicators: 
Two green LET% indicate the presence of 
+5v & -5v dc. An extinguished LED indi- 
cates the absence of the associated voltage. 
CO Line/Station Iritcdaces: 
The 2x4 SLT Expander Module provides 
the interface for two Central Of3ice. Cen- 
trex or PEX loop sbrt, lines. The protection 
circuitry necessary to allow the system to 
be classified as a fully protected system are 
located on the card for each CO circuit. The 
CO circuits are equipped with current 
sensing circuitry that identifies distant end 
disconnect (loop supervisionI. ‘Ihe module 
design also provides proper fusing or pro- 
tection to comply with the requirements of 
UL 1459 Second Edit&r and CSA (X2.2 
No. 225 standards. CO lines are connected 
to the system via RJ-11 modular connec- 
tors mounted on the bottom edge of the 
board. 
The 2x4 SLT Expander module also pro- 
vides the interface for four standard on- 
premise single line telephones (2500 type). 
Four 36v dc single line circuits are pro- 
vided on the printed circuit board. These 
single line telephones canbe equippedwith 
a standard message waiting lamp (9OV 
T&R) that operate on the Yip” and ‘ring” 
leads. Additionally, each circuft provides a 
loop interrupt (7OOms duration) to the con- 
nected SLT or device. The card will support 
single line telephones up to 2000 feet fkom 
the Basic KSU. Refer toTable 200-4 - Loop 
IArMs for additional wiring information. 
On-premise singie line telephones shoutd 
present a load to the port totaling a maxi- 
mum ringer equivalence of 2.5. 
A molex connector. 54 is located in the 
upper left comer of the 2x4 SLT Expander 
Module to provide ring generator capabili- 
ties. It is recommended that the Tellabs 
8101, 30 Hz. SOVAC Ring Generator be 
used with th% board. 
200-S 
Issue 1, Jannary 1-3  
						

							i@inite DVX’andDI& 
Dfffital Key T&phone Systems GENERAL DESCRIPTION 
E. 4x8 Expander Modalt LLEDS L Indioators: 
The 4x8 Expander Module is a four CO by 
eight digital key station Interface module 
that may plug onto the main key service 
board of the Expansion KSU only. This 
module is a combination board that con- 
tains the necessary eircuit3-y to connect 
four CO/Centrex/PEX loop start lines and 
eight digital key telephones to the system. 
This card also contains one additional 
voice b-ansmit) path for external pagjng. 
and a connector for adding one application 
module {i.e. DTMF Receiver) to the system. Four green LF,Ds are located on the 4x8 
Expander Module. Two of the LEDs (IIS4 & 
DS3) indicate the presence of +5v & -5v dc. 
LEDs DSl and DS2 indicate the presence 
of + 12V dc used to supply power to the key 
stations (one LED for every four stations). 
An extinguished LED indicates the ab- 
sence of the associated voltage. 
CO tie/Station Interfaces 
The 4x8 Expander Module provides the 
interface for four Central Office. Centrex or 
PBX loop start, lines. The protection cir- 
cuitry necesszy to aLlow the system to be 
classified as a fully protected system are 
located on the card for each CO circuit. The 
CO circuits are eqflpped with current 
sensing tzircuiw that identifies distant end 
disconnect (loop supervision). The module 
design also provides proper rUsing or pro- 
tection to comply with the requirements of 
LIL 1459 Second Edition and CSA C22.2 
No. 225 standards. CO lines are connected 
totbesyst~vfaRJl1mod~arronnectors 
mounted on the bottom edge of the board. 
The 4x8 Expander module also provides 
the interface for eight digital key tele- 
phones using two 64K channel arrange- 
ments. Stations connect to the hoard via 
the MDF through a 50-pin connector lo- 
cakd on the board. Each station connec- 
tion requires four wires to connect to the 
board. 
i.9 : 
FQurc ZOO-8 4x8 bpandcr Module A Digital DSS Console. a Single Line Tele- 
phone Adapter [OPX) or other specifkally 
dessigned adapter with a digital interface 
can be assigned to any one of the interface 
circuits. The key ‘station interface circuits 
are protected f&m mis-wirinp and over- 
current. 
16sue 1, January l9B3 
200-B  
						

							GENERAL DEXXUPTION 
irLfinite DVX’ and DVX” 
Digftal 
Rev Telephone Sy&cms 
200.3 COMMON EQUIPMENT FOR TEE 
DVX = SYSTEM 
The following components are necessary to op- 
erate the in..ite Digital Key Telephone System. 
Refer to Appendix B for a complete infinite Digi- 
tal Key Telephone System component list with 
Part ws. 
l Equipment Cabinet w/Power Supply 
IK=Jl 
l Central Processing Board (CPB) 
l 4xS Key Interface Board (CKB) 
. 4 SLT Interface Board [CSB) 
A Equipment Cabinet With Power 
SUPplY u=uI 
The DVX ’ 
system main cabinet contains 
the power supply and mother board to 
support a fully configured system of 28 CO 
Lines and 56 Stations. The mot&r board 
has eight card slots. Card Slot 58 (the right 
most card slot) is used for the CenkaI 
Processor Soard (CPB) PCB. Card slots J1 
through 57 each support a four CO line by 
eight station PCB’s. Cable exits through 
the bottom of the KSU through a cable exit 
raceway near the back of the KSU. Refer to 
Figure ZOO-6 Basic KSU Equipment 
Cabinet 
Power Supply 
B. 
The power supply is installed in the KSU 
cabinet at the time of manufacture and 
ships with the KSLJ. The power supply in- 
put voltage is 117V ac +10?/6. The power 
supply provides power distribution of fil- 
tered f unregulated 12V dc and a regulated 
-5V de to the back plane bus. An ON/OFF 
switch is located on the front of the power 
supply along with 
a &-blow 5 amp fuse on 
the AC side of the transformer. The power 
supply provides an input for a 4SV dc 
source for future use. Power is regulated 
and distributed to stations/circuitry in the 
system on each printed circuit board. 
Three fuses located inside the power sup- 
ply protect the system from over-current 
situations. The Power supply and cabinet 
meet aU safety requirements to comply 
with UL 1459 Second Edition and CSA 
C22.2 No. 225 standards. 
central Roccssor Board [CFB) 
This plug-in card is the only common 
equipment card required to make the sys- 
tem operational and controls all system 
activity. The CPB contains the main micro- 
Processor a 16-bit [&3000) and a real tLme clock which controls all system functions 
including the PCM/IDM voice switching 
under direction of ROM and RAM software 
coding. The CPB is responsible for alI con- 
trol functions, execution of all logic opera- 
tions and control of system modules 
including control over circuiky necessary 
for voice switching and conference connec- 
tions. The CPB is also responsible for all 
system 
tones. system timing, and station 
status control. In addition the CPB also 
provides software and hardware support to 
ensure the following: 
l Watch dog timer and recovery. 
l PCB status as to presence/absence of 
cards for automatic spftwarc configura- 
tion setup. 
l Interpret an ID code from each PCB so 
that card type can be determined auto- 
matically. 
l State/event software design. 
l Battery backup of customer database 
RAM memory. 
The CPB contains the circuiuy and con- 
nection @K!A type] for background mu- 
sic/music on hold, and the standard 300 
baud modem. An optionaI 1200 baud mo- 
dem can be installed on the CPB to allow 
the on-board modem to transmit at a 1200 
baud rate. In addition there is one RS- 
232C (modular connector) input/output 
port on the CP3 and a connector to 
support 
the use of an optional I/O expansion mod- 
ule. The I/O expansion module adds RS- 
232C I/O port and RS-422 I/O port to the 
system for a system total of three I/O ports. 
A reset 0 push button switch and a 
BGM/MOH volume control pot is located 
on the front of tie PCB. Refer to Figure 
200-7 Central Processing Board (CPB) for 
the location of the Central. Processing 
Board connectors. 
System software is provided in EPROM 
memory and is fnstalled on the CPB. The 
CPB contains 512k of EPROM storage and 
is equipped with 256K of battery-backed 
static RAM. Provisions have been made on 
the card to address up to four megabytes 
of EPROM memory and up to two mega- 
bytes of static RAM. 
dcm Interface 
The Central Processor Board (CPB) con- 
tains an on-board modem that is capable 
of transmitting data at a rate of 300 baud. 
200-10 Issue 1. Januarp 1993  
						

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							i@rzite DVX’ and DVXT’ 
Dtgital Key Telephone Spetenzs 
The modem supports and is compatible 
with the Hayes command protocol. The 
Bell System Western Electric) standards 
103 and 2l2A for modem design is incor- 
porated 
into the design of this modem. The modem operates on-he in both Full and 
Htiduplexmodes. An optional 1200 batid 
module may be added to the CPB to allow 
transmission at the rate of 1200 baud. 
(_ 
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r-J& i ---- -1 1200 bud 
ZiQ Modem Modute (MM) 
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L ---- -__-_____ ---- _-_______-___--_ 
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a& J3 t3 
Ll 
l/O Module (KIM) 
Fl@rc 200-7 Central F’roceasfng Board (Cm) 
200-12 
It3eae 1, January 1993  
						

							iqfinite DVX’ and DVXn 
Di@tal Key Telephone Systems GENERAL DE!ERIPTlON 
C. 4 x 8 Key titerface Board (CKB) 
The 4x8 Key Interface Board (CKB) is a four 
CO by eight digital key station interface 
board. The 4x8 Key Interface Board is a 
combination card that contains the neces- 
sary clrcultry to connect four CO/Cen- 
trex/PBX loop start lines and eight digital 
key telephones to the system. ‘This card 
also contains one additional voice (trans- 
mit) path for external paging. a multi pur- 
pose relay and a connector for adding one 
application module to the system. The 4x8 
Key Interface Board may be installed into 
Basic iGU cabinet back plane using slots 
57 through Jl and may be removed or 
inserted while power is apphed to the Basic 
KSU (power on). Refer to Refer to Figure 
200-8 4x8 Key Interface Board (CKB) for 
location of connectors. 
LEDS L 
Indicators: 
Five red LEDs are located along the front 
edge of the 4x8 Key Interface Board (CKB). 
one for each CO Line to indtcate when 
it is 
in use and one I&D that monitors the 
contact operation of the multi use contact 
located on the board. l%o green LEDs also 
located along the front edge of the CKl3 
indicate the presence of +5V & -5V dc. 
co Line/station hltedacts: 
The 4x8 Key Interface Board (CKB) pro- 
vides the interface for four CentraI Ofhce. 
Centiex or PBX loop start. lines. The pm- 
tection circuitry necessary to allow the sys- 
tem to be classified as a fUny protected 
system are located on tbe card for each CO 
circuit. The CO circuits are equipped with 
current sensing circuitry that identifies 
distant end disconnect (loop supervision). 
The card also provides proper fusing or 
protection to comply with the requirements 
of UL 1459 Second Edition and CSA C22.2 
No. 225 standards. 
The 4x8 Key Interface Board also provides 
the interface for eight digital key tele- 
phones usa two f34K channel arrange- 
ments. Stations connect to the board via 
the MDF through a 50-pin connector lo- 
cated on the fmnt edge of the board. Each 
station connection requires four wires to 
connect to the board. 
A Digital DSS Console, a Single Line Tele- 
phone Adapter (Opx), or other specifically 
designed adapter with a digital interface 
can be assigned to any one of the interface 
circuits. The Key Station interface circuits 
are protected from m&wiring and over- 
current. 
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PQurc 200-S 4x8 Key Interface Board (Cm) 
Issue 1, January 1993 
2u0-13