Comdial Executech 2000 Telephone System Instructions Manual

							IMI66-068Instuuution
2.4.2Connecting A Battery Back-Up
The common equipment provides an interface connector for the connection of an optional external battery assembly.
This assembly is available separately as a kit.
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Be sure that the ACpower cord is connected to the electrical outlet before connecting the external battery assembly
to the common equipment interface connector.
This ensures that internalprotection circuitry is operating to prevent
damage that could 
resultfrom improper connection.
The optional Comdial model BBU02, BBL02 external battery assembly provides a minimum of one hour of
operation should the AC power to the system be interrupted. To calculate the actual minimum battery back-up time
use the following equation:
T= W)(e)
1 + KO.1) W
T= Back up time in hours
K= 0.8
e = Ampere-hour capacity
N=Total Number of Stations
The BBU02 external battery assembly may include batteries from either of the following suppliers:l
Model PS-12150 from Power-Sonic Corporation, Redwood City CA, 94032.l
Model PEl2V15 from GS PORTALAC, City Of Industry CA, 91748
During AC operation, the common equipment provides recharging current to maintain the voltage potential of the
external battery assembly at an operational level.
NOTE: The optional external battery assembly requires approximately ten (10) hours to completely recharge tofu11
potential after it has been completely discharged and, in some cases, when initially installed.
Before installing a battery backup, check that the following items are all accurate:l
Correct voltage of battery charger circuit is between 13.6~ DC and 13.8~ DC (contact Comdial if the voltage is
higher or lower),”l
Correct voltage of the batteries themselves is 12~ DC,l
A fully charged and disconnected battery should not exceed 13. Iv DC. A completely discharged battery may
check as low as 
10~ DC,l
A fully charged battery connected to the system should be less than 13.8~ DC; if the value is greater than 13.8,
contact Comdial).2.4.3 Grounding The System
The common equipment cabinet has internal secondary surge protection on all line ports.In order for this protection
to be effective, you 
must connect the cabinet to a reliable earth ground such as a metal cold water pipe or a building
frame ground. The grounding wire must be #lO or #12 insulated, solid copper and separate from the three-wire AC
line cord. The common equipment cabinet has a ground stud for this purpose.
NOTE: When you install an expansion module on the base unit, attach a #IO or #I2 insulated, solid copper wire
between the grounding terminal on the expansion unit and the grounding terminal on the common
equipment unit.
2-5 
						

							IMZ66-0682.5 Connecting The Lines
Once you have mounted the common equipment and connected the power, it is time to begin connecting the
telephone lines.
Connect telephone lines to a Type 
66MM-xx connector block and then connect that block to the telephone
company’s demarcation point.
The line terminations for the common equipment cabinet are standard modular plug/jack connections.Each modular
jack provides termination for two lines. Modular line jacks 1 and 2 also provide termination for an auxiliary pair in
addition to the two outside lines.You can use a type 
66M-xx connector block or an individual 6-position modular
jack for the outside line termination.
Use twisted-pair wiring for the line cord that you route between the outside line
termination and the common equipment termination.Table 2.1 shows the line connection details for all three of the
common equipment base units. Figures 2.3 and 2.4 illustrate typical line connections.
:
6-Line, 12-Station Base Unit&Line, 20-Station Base Unit
Lines5,6
Lines3,4,Aux.2(Line4)
 Lines1,2,Aux.1(Line2)\-Lines 
5.6.-Lines 7; 8
16-Line, 32-Station Base Unit
Lines1,2,
Lines3,4,
Aux 1 (Ljne 2)
Aux 
tiL.;;e5 42
Lines 7: 8
sta. 34-41
Lines 9, 10Lines 11,12
Lines 13, 14
Lines 15, 16
Data Port A
Data Port B
Figure 2.3. Typical Common Equipment Line Connections
2-6 
						

							IMI66-068Installation
:S-Line, 
20-Station Base Unit
6-Wire Twisted
r
Typical Station
1onnector BlocRING2
RING
1TIP 1‘TIP2
RING4
RING3
‘TIP3‘TIP4RING6
RING5
TIP 5
TIP 6
RING
3RING7
TIP7
TIP3
CO/PBXLINES
INETERMINATION‘TYPEGSM-xxCONNECTOR BLOCKOR‘INDIVIDUAlGPOSlTIONMODULAR JACKS
C01Telco/PBX
mector Block JcAJso25
Figure 2.4. Typical Common Equipment to CO Line Termination Connections
2-7 
						

							znst4zuutionZMZN-0682.51
Connecting The Line Jacks
Table 2.1, below, shows the connections for each line on each common equipment cabinet. Jacks one, two, and
three are the same for each system, and jacks four through eight are then applicable to only those systems 
supporting
the greater number of lines.
(-Line, 12-Sta Base Unit
8-Line,2Mta. Base Unit
N-Line, 32-St.a Base Unit
B-Line, 2Wta. Base Unit
.&Line, 32-h. Base Unit
dLme, 32-h. Base Unit
1 Linel3RlNGI
1 51 Linel4FUNG
6No Connection
81No Connection
2
Line 16 ‘IIF’I3Line 15 TIP
4Line 15 RING
5Line 16 RING
6No Connection
2-8 
						

							:
ZMZ66-068
2.5.2Using Line-To-Line Port Reassignment
Znstullatin
You can reassign the programming attributes of one outside line to a different port without relocating any of the
physical hardware. This feature allows additions, movements, and changes to be made without your having to
relocate the line wiring. For example, let’s say that you initially installed CO line A to line 1. You assigned Line 1
to a station for use as a prime line and also assigned line 5 for use as needed .Should line 1 become defective for
some reason, the CO line A and all programmed line attributes, such as prime line, now associated with line 1 can be
exchanged with line 5. No physical reconnection at a connector block is required to exchange this defective line for
an operational one, and no line attribute reprogramming is required. Refer to Chapter 3, section 3.6.10 for
line-to-line port reassignment details.2.5.3 Assigning Expansion Lines
Add-on expansion modules are available that can expand line capacity up to 24 lines. Refer to Section 2.9 for
complete details.2.5.4 Connecting The Cable Clips
Each cabinet-mounted 50-pin male connector has a retaining clip, which secures the mated connection.The clip
secures the connection by snapping into a slot on the cable-mounted connector.
YOU must pull back the retaining
clip to unsnap it before the connectors can be separated.
2.5.5Connecting a Surge Protector
Transient voltage spikes, if induced onto CO or CENTREX lines, can travel through the cable and into the common
equipment. The telephone company offers basic protection against this condition but it is usually designed to protect
the central 
office circuits. While this supplied surge protection will also provide some protection to the common
equipment, it should not be relied upon for total protection. To help ensure that external over-voltage surges do not
damage the system, we recommend that you install and properly ground gas discharge tubes, or similar primary
protection devices, on all lines.x
2-9 
						

							InstaL?&ionIiMI6&0682.6 Connecting The Stations
Usually, the connections you make between the common equipment and the stations are via type 66M-xx connector
blocks that are cable connected to the common equipment 
50-pin male connector.The maximum distance allowed
from the common equipment to the stations is 1500 feet for multiline keysets and 3000 feet for single-line keysets
using 
#24 gauge, twisted-pair cable.
If spare conductors exist in the cables that are run between the 
66M-xx connector blocks and the station jacks, it is a
good practice to connect them to earth ground to help prevent them from inducing radio frequency and/or AC
interference into the system.
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. .;;:’:1.
The polarity between the individual wires in a particular voice or data pair is not critical; however, do not connect
the voice circuits to the data circuits.
Tables 2.2-2.4 show the station connection details for all three common equipment base units. Figure 2.5
illustrates typical station connections.
All station ports are programmable.
2.6.1Understanding Paired Ports
Station ports are paired for data and for overload protection.Because of this data pairing, a problem with station ten
may actually manifest in station 1 l-keep this in mind when you are troubleshooting.Pairing the station ports is
also necessary because some functions, such as SOHVA, require the use of two paired data ports for operation.The
station ports are paired as follows:
Data And Overload Pairing
lo- 11I26 - 27
16- 17I32-33 1
18 - 19I34- 35 /20-21
I36-37 I
Station ports are as follows:
qThe 6- line, 1Zstation base unit has ports 10 through 21
c]The 8 line, 20-station base unit has ports 10 through 29
qThe 16-line, 32-station base unit has ports 10 through 41 on
2-10 
						

							IMI66-068
TYPICAL STATIO:NCONNECTOR BLOt3c
TYPICALATTENDANTSTATION
TYPICALATTENDANT
TYPICAL
EXECUTIVE
STATION
I-
CUP TERMINALS
TYPICAL STATION
WALL JACK WIRING
25PAIRMAILE TO
FEMALE
CABLE
fl;;I&J
PLUG
‘,llII1NO aYNNECTlcJN2NO CGNNECTICN
3RI-REO-VOICE
4nearwomI5 NO CONNECTON6NO CONNECTION
CAJSOOia
TYPICAL
WORK
STATION
Figure 2.5. Typical Station Connections
2-11 
						

							ZMZ66-0682.6.2
Connecting A Six Line,
Twelve Station Common Equipment
Table 2.2, below, shows the color coded connections on a type M-xx connector block for a six line, twelve station
system.
Table 2.2
E24
IN3285VOICEstiITE36RED
I-SLATE
530 9 VOICE 3IITE5 10631 11 DATA YELLOW]
a33 I15DATAYELLOW
a /16BLACK
19 laMXATE1035 19 DATA YELLOW1
D10 20.UE1136 21 VOICE GII 11 I 22 I123723 DATA JEJ1224
132.5 VOICE GREEN161
ACKr1326 RED
j;BLA&&;OWN1 14 1 39 ! 27 1 DATA 1 YELLOW 1-ACK1428BLACK/BLACK-SLATE1540
29VOICE2SLATE-BLACK1530
IYELLOW-BLUE1 41 I 31) DATA
la 
1la
POWER FAIL STATION
I
cAIsos5 
						

							ZMZ66-068znstuuation2.6.3
Connecting An Eight Line
Twenty Station Common 
&uigment
Table 2.3, below, shows the color coded connections on a type 66-m connector block for an eight line, twenty
station system.
,Table 2.3
25PAIR CABLE CONNECTIOI4s 14.WIRE CONNECTIONS
J-l CONNECTIONSJ-2 CONNECTIONS
PIN 1 CLIP 11 WIRE
WIRE COLORPAIR NO. 1 TERM. 1 PAIR 1 COLOR
STA.LOCATION
STA.
LOCATION
WHITE-BLUE
126 1 1VOICEa 1 -
N429 I 7’ DATA YE41 aBLACK 1
1I-BROWN
D
a3315DATAYELLOWa16BLACK
934
17VOICE_39iaRED
GREL.~
RED. ----.-.--
r UE-BLACK.BLACK-ORANGE1121371231DATA1YELLOW1ORANGE-B1BLACK-GREEN.ACK-12 24 BLACK 113 38 2.5 VOICE 
B
lGREEN13 26 REDIBLACK-BROWN14 39 27 DATA YELLOW_BROWN-BLACK14 28 BLACK
VIOLET-BLUES121BLUE-VIOLET2142VIOLET-ORANGE224743DATAORANGE-VIOLET2244VIOLET-GREEN234845VOICE
GREEN-VI0
VIOLET-BROWN
BROWN-VIOLET
11VIOLET-SLATE
SLATE-VIOLET
LET_12346RED-.-,j2414947DATAYELLOW48BLACK325-5049GREENPI2550REDTIP&RINI
1 STATION 1711 AUDIBLE)WER FAIL STA. ! COMMONS PAIR( AUDIBLE
2-13 
						

							ZMZ66-0682.6.4Connecting A Sixteen Line,
Thirty Two Station Common Equipment
Table 2.4, below, shows the color coded connections on a type 66-xx connector block for a sixteen line, thirty two
station system.
Table 2.4
25PAIR CABLE CONNECTIONS 14-WIRE CONNECTIONS1 J-l CONNECTIONS 1 J-2 CONNECTIONS1PIN1CLIP11WIRE
WIRE COLOR
WHITE-BLUE
BLUE-WHITEPAIR NO.TERM.PAIRCOLORSTA.LOCATIONSTA.
LOCATION
1261VOICEGREEN 102212REDn.Y“CI I nw
E4aBLACK1iITE-SLATE536_9VOICEGRE-‘ITE510RED
93417VOICE
GRE
D918
RED1.ATE103519DATAYELLOW.‘E-RED
1020BLACKI1---1BLACK-BLUE‘1L3621VOICE- GREBLACK-ORANGE123723
DATA2ORANGE-BLACK1224BLACK
BLACK-GREEN133825VOICE
,$A?EEN 16J$(EFN-BI ACK 1 1 13 1 26 11 RED
BLACK-BROWN
1 141 391271 DATA / YELLOW
BROWN-BLAC
BLACK-SLATE
28
2-14