Vodavi Starplus Hybrid Key Telephone System Installation Manual

B. Expansion KSU with Power Supply (EKSU) 
The SPD 1428 Expansion KSU is a unit which comes 
equipped with a power supply and circuity providing 
four (4) additional loop start CO/PBWCentrex line 
ports and eight (8) digital station ports to the Basic 
KSU. All processing and control functions as well as 
voice connections and switching are controlled by 
circuitry on the Basic KSU and transmitted to the 
Expansion KSU through the ribbon cables. 
The Expansion key service board allows connection 
of one...

STARPLUS@ SPD 1428 & 2856 Digital Key Telephone Systems 
_ - - _ _ _ 
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. _ _ _ _. . ___. 
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. . . ..--.-............1 
Figure 500-4 Expansion KSU & Main Key Service Bd (EKSU) 
Issue 1, November 1991 
500-9  

Digital Key Telephone Systems STARPLUS@ SPD 1428 & 2856 
interface circuits are protected from mis-wiring and 
over-current. 
. mes Connections: 
CO Lines are connected to the system via modular 
RJ-11 connectors accessed through the bottom of 
the EKSU. The Expansion KSU connects CO Line 
ports 9,10, 11, and 12 to the system through modu- 
lar connectors Jl , J2, J3, and J4 respectively. The 
pinouts of the modular connector are as follows: 
%!I ITF 
Stations Connections: 
The station ports of the SPD...

sTARPLUS@ SPD 1428 & 2858 Digital Key Telephone Systems 
Table 500-2 SPD 1428 EKSU Jll Station 
Connections Table 500-3 SPD 1428 4x8 Expander Module 
Connection . 
PAIR PIN COLOR DESIG 
1 26 WH/BL Port 013 Xmt Tip 
1 BUWH Xmt Ring 
2 27 WH/OR Rcve Tip 
2 OR/WH Rcve Ring 
3 28 WWGN Port 014 Xmt Tip 
3 GNIWH Xmt Ring 
4 29 WH/BN Rcve Tip 
4 
BN/WH Rcve Ring 
5 30 WWSL Port 015 Xmt Tip 
5 SUWH Xmt Ring 
6 31 RD/BL Rcve Tip 
6 BURD Rcve Ring 
7 32 RD/OR Port 016 Xmt Tip 
7 
OWRD Xmt Ring 
8 33 RD/GN Rcve Tip...

Digital Key Telephone Systems sTARPLUS@ SPD 1428 & 2858 
CSA 0.3 standards. CO lines are connected to the 
system via RJ-11 modular connectors mounted on 
the bottom edge of the board. 
The 2x4 CO/STA Expander module also provides 
the interface for four (4) Digital Key Telephones 
using two (2) 64 kilobyte channel arrangements. 
Stations connect to the board via the MDF through 
a 50 pin connector located on the main key service 
board inside the basic KSU or a similar connector on 
the expansion key...

g. Restore power to the Expansion KSU. 
A No. 12 AWG stranded wire is used to connect a 
ground between the Expansion KSU and the 4x8 
CO/Station Expander Module. A two position termi- 
nal strip (P3) is located along the bottom edge of the 
expansion key service unit and is accessible through 
the bottom of the BKSU. One terminal position on 
the P3 connector is used to connect the ground wire 
from the basic KSU to the Expansion KSU. 
The other terminal position is used to connect the 
ground wire from...

500.4 SPD 2656 INSTALLATION PLANNING 
Prior planning of the installation will aid in a smooth 
cut-over and a satisfied customer. Select a suitable 
location for the system. Determine the number of 
telephones of each type, and the number of 4x8 
CO/Station cards from the sales contract and discus- 
sions with the customer. 
NOTE: Only one station set is allowed per digital 
extension number. It is not possible to bridge digital 
station ports so that an extension number may ap- 
pear in more than one...

sTARPLUS@ SPD 1428 & 2856 Digital Key Telephone Systems 
GND 
Figure 500-5 SPD 2856 Basic Cabinet with Power Supply 
Issue 1, November 1991 500-15  

Digital Key Telephone Systems STARPLUS@ SPD 1428 & 2858 
supply card should be removed. If an 
instance arises where it must be removed, 
ALWAYS unplug the system AC power 
cord FIRST. 
The power supply cord plugs into an isolated, dedi- 
cated, (with dedicated ground) 117VAC outlet for 
power. This is necessary to prevent possible voltage 
spikes and transients that may be caused by equip- 
ment sharing the same AC circuit. 
The AC connection to the power supply requires a 
parallel blade with a ground...

STARPLUS@ SPD 1428 & 2856 
Digital Key Telephone Systems 
C. Central Processor Board (CPB) 
This plug-in card is the only common equipment card 
required to make the system operational and con- 
trols all system activity. The CPB contains the main 
micro-processor a 16-bit (68000) and a real time 
clock which controls all system functions including 
the PCM/TDM voice switching under direction of 
ROM and RAM software coding. The CPB is re- 
sponsible for all control functions, execution of all 
logic...