Comdial Executech II Model 816 Instructions Manual

							s Installation IMI 66-031 
’ L 
f- 
CONNECTIONS 
Connection between the KSU and the TELCO or PABX line is via four-wire 
cable and modular plug/jack connection. The maximum length of a line 
c 
cable is determined by the limitations detailed above. 
A-Lead Control 
The KSU inputs of TELCO lines 
7 and 8 are configured to detect an 
A-lead (A and Al) control signal when it is applied at the modular 
line jack of the KSU. When the KSU detects an A-lead control signal 
on line 
7 or 8, it causes a busy line light indication to be shown at 
all of the key system stations connected to it. The A-lead loop 
resistance must not exceed 1500 ohms. 
A typical use of A-lead control signal detection would find a 
single-line, non-key system, telephone set, modem, data terminal, etc. 
configured for A-lead control and connected to the TELCO line at 
terminal clips provided on the station connector block connected to 
J2 
of the KSU. 
A connected device parallels the tip and ring leads of 
the TELCO line and supplies the A and Al control signals to the KSU. 
&&z&&Q $&W&&z@ 
( 
Connections between the KSU and the stations are typically via two 
66M-xx station distribution connector blocks per the discussion steps 
given below. 
Refer to Figures 2 through 5 for connection details. 
Various tvnes of station distribution connector blocks are available 
and 
may be-used in lieu of the type 66M-xx connector if desired. 
i. 
2. 
NOTE 
The system provides one tip and ring pair connected to line 
1 as an emergency, power failure circuit. This power 
failure pair is located as detailed on Figures 4 and 5. The 
power failure pair is only active during a power failure. 
An industry standard, single-line telephone, such as a type 
2500, can be connected to this pair and used to provide 
communications capability should the AC power to the system 
be interrupted. 
Connect a cable between the KSU connector and the connector on the 
66~-xx connecting block. 
Connect four-wire, twisted-pair cables from-the 66M-XX block 
directly to the station or from the 66M-xx block to modular RJ14 
configuration station jacks. 
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							Installation 
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IMI 66-031 
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: To do SOI will 
make a station inoperative as well as the adjacent odd or 
even station. 
3. 
After making the wiring connections discussed above and 
illustrated in Figures 2 through 5, double check all connections 
and cable routing to insure accuracy. 
When a serial data printer is used for SMDR and COS printout, connect 
it to clips 41, 42 43, and 44 of station connector block Jl. 
Transmitted data, signal ground, request-to-send, and clear-to-send 
terminations are supplied at the connection block by the KSU. 
levels meet RS-232 specifications. Signal 
A typical connection configuration 
is as illustrated in Figure 5. 
The maximum distance between the 
printer and the KSU 
must not exceed 50 feet. When preparing a cable 
for connection to the printer interface connector, refer to the 
manufacturers manual applicable to the printer being interfaced, and 
make the following wiring connections: 
. 
l 
0 
l 
a 
Wire the TD line (data to printer from KSU - clip 41) to the printer 
-., 
receive data input pin. - 
Wire the SG line (signal ground - clip 42) to 
ground pin. the printer signal 
Wire the RTS line (status signal from the KSU 
43) to the printer data-set-ready input pin. to the printer - clip 
Wire the CTS line (status from printer to KSU 
printer request-to-send output pin. - clip 44) to the 
Configure the printer 
, per the manufacturers instructions, to receive 
7-bit data, 2 stop bits, 
and no parity. Set the baud rate for the 
serial data at 110 or 300 baud. 
The printer baud rate setting must 
match the system baud rate set by COS programming. 
defaults to a baud rate of 110. The system 
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Installation I IMI 66-031 ’ 
To apply AC power to the KSU, connect the AC power 
grounded, 
three-wire, 117VAC electrical outlet. A cord to a properly 
plug-in, power line 
surge protector should be installed between the KSU power cord and the 
AC outlet. 
Do not connect the AC power cord until the installation has 
been checked per the instructions given later .in this 
chapter. 
It is recommended that a grounding wire, 
separate from the three wire 
AC line cord, be used. 
Some local codes may require this use- A 
ground stud is located at the lower right corner of the KSU for this 
purpose. Wire a 810 or #12, insulated, 
solid copper wire between this 
ground stud and a reliable earth ground such as a metal cold water 
pipe or a building frame ground. 
mo sets of relay closure contact points, are available at the Jl 
c station connector block. One set (clips 45 and 46) provides a relay 
contact closure whenever any of the TELCO lines, connected to the KSU, 
ring. The other set (clips 47 and 48) provides a relay contact 
closure whenever station 17 rings. 
These contact closures track the 
ringing pattern in both cases. The contacts are closed during the 
ring on period and are open during the silent period. 
A typical connection to these terminals is illustrated in Figure 2. 
Refer to the paragraph headed -3 ~~JJJJJ &.J+Q&~~ for a discussion 
for using these terminals in this alternate paging function. 
m 
Do not exceed a 0.4 amps at 24 volts load on these control 
terminals. 
If the load requirements exceed this limit, 
connect the load through an external relay. 
DO NOT CONNECT 
THESE CONTROL TERMINALS DIRECTLY TO THE 117VAC LINE.  
						

							Installation 
i. IMI 66-031 .+ 
4 2 
%?Etews e!+w IaLii 
can be programmed to be a PA station port 
; 
e ephone station port (see Chapter 4 for programming 
details). 
When this is done, the audio input of a PA amplifier can be 
connected to the audio pair of the station port as illustrated in 
Figure 3. The connection must be isolated with a 600 ohm to 600 ohm 
audio matching transformer. 
Terminate the audio input of the PA 
amplifier with a 620 ohm (nominal value) resistor. 
@-=JQa;M&~~~a~* the Common Audible contact 
Points are automatica y recon lgure as PA enable terminals. The 
relay contact 
closure on these terminals occurs when PA station 23 
is dialed. 
The normal common audible function, as discussed !F 
previously, is disabled as long as station 23 is a PA station. 
l &$ &&&J a & m e a a u~ga the Auxiliary Station 
Interface (station 17 audible) contact points are automatically 
reconfigured as PA enable terminals. The relay contact closure on 
these terminals occurs when PA station 25 is dialed. 
The normal 
auxiliary station interface, 
as discussed previously, is disabled-as 
long as station 25 is a PA station. 
A line port can be configured by class-of service programming to be -an 
,- 
AUXILIARY port. As an AUXILIARY port, it can be used to couple a. 
 
statlon voice path to an external device. 
This is done from any 
allowed station 
by pressing the proper line select key to select the 
AUXILIARY port. 
DTMF tones or dial pulses can be sent through the 
auxiliary port as needed. 
If direct access area paging is to be part of the system, connect the 
audio input of a paging amplifier to the KSU line jack programmed to 
be an AUXILIARY port. 
The input impedance of this port is 
a proximately 
R 600 ohms. The connection must be isolated with a 600 
o m to 600 ohm audio matching transformer. 
Terminate the audio input 
of the paging amplifier with a 620 ohm (nominal value) resistor. A 
tone select, zone-paging amplifier can be employed if desired. If 
used, the zone-select code must be dialed after the AUXILIARY port 
line select key is pressed. 
If music on hold is to be part of the system, 
connect a KX registered 
music source to the KSU input jack (phono jack) provided for this 
purpose. 
The impedance of this input is approximately 500 ohms. 
Level adjustment of the music source may 
be necessary. 
done during system checkout. This may be 
e 
:;- 
. 
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							Installation 
IMI 66-031 
An optional station is available which is equipped with a 14 station 
Busy Lamp Field (BLF). 
up to eight BLF stations can be connected to 
the system. 
A BLF station can be connected to any odd or even station 
port in the system per the following guidelines. 
l The installed distance between the KSU and the BLF station must be 
limited to 1000 feet or less. 
OThe data-line paired station port cannot be used as a BLF station 
connection or as a regular station connection. Data-line pairing 
is: 10-11, 12-13, 14-15, 16-17, 
18-19, 19-21, 22-24, and 23-25. 
l The overload paired station port cannot be used as a BLF station 
connection but can be used as a regular station connection. 
Overload pairing is: 10-12, 11-13, 14-16, 15-17, 18-20, 19-21, 
22-24, and 23-25. 
l A port, paired in either manner with a BLF station, can be used as a 
PA port if desired. 
The optional DSS/BLF console may be installed at any station port to 
r work in conjunction with a companion system station connected to the 
adjacent port (e.g.; 
port 10 for station and port 11 for console). 
The installed distance limit between the KSU and the console is the 
same as that specified for the companion station. 
Connect all four 
wires (voice pair and data pair) of the console cable to the station 
connection block. 
The voice pair connections of the console can be used simultaneously 
to enable a PA port function. Refer to the paragraph in this chapter 
headed Q&Q &SW m& J&&MS w&* and to the illustration shown 
in Figure 5. Per that discussion, 
wire a PA amplifier input to the 
DSS/BLF console voice-pair at the station connector block clip 
terminals. 
Use an audio matching transformer, as discussed in the 
referenced paragraph and illustration, to provide isolation. If an 
enable signal is required with the particular PA equipment being used, 
the console and PA equipment connections are limited to the station 
ports specified in the above mentioned reference. 
The DSS/BLF console port must be programmed as a DSS/BLF port (see 
Chapter 4 for programming details) before console operation can take 
place. The console port must be also programmed as a PA port if a PA 
amplifier has been.connected to the voice pair as part of the system. 
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							Installation I IMI 66-031 
l----1 CLIP TERM 
24V@ 0.4A MAX 
VOLTAGE CLAMPING DIODE 
RECOMMENDED 
CONTACT CLOSURE 
Figure 2. External Signalling --Typical Connection 
600-h TO 6OOA (1:l) 
PA SYSTEM 
AUDIO 
I 
TRANSFOF 
TO KSU STATION 111 r 
PORT 23 OR 25 IF 
ENABLE IS REQUIRED : 
OR TO ANY UNUSED . 
STATION PORT IF . AUDIO INPUT 
ENABLE IS 
t 
NOT REQUIRED. ENABLE INPUT 
TO 
KSU EXTERNAL CONTROL CONNECTION POINTS 
ON 66M-XX CONNECTOR BLOCK. 
l CLIPS 45 & 46 FOR STATION PORT 23 PA ENABLE 
l CLIPS 47 8148 FOR STATION PORT 25 PA ENABLE 
Figure 3. 
PA Connections 
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							Installation  
						

							IMI 66-031 
Figure 4. System Interconnection-Typical Connections 
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							Installation 
IMI 66-031 . 
GREEN-WHITE 1 J 1 
3 1 
12 
13 
RED-SLATE 1 
l4 
SLATE-RED 1 
I -_c._.. a” 
E 
. ~~ I 11 
1 1 
VOICE 
1 z I PA’R 1 
I r)c 1 VOICE 
1 PAIR 1 GREEN 21 
r RED 22 
DATA &J 
DATA YELLOW 23 
PAIR 
PAIR 
BLACK 24 
-I 1 VOICE 1 I SEEN 25 I DAIE) I I -j 16 j-1 SPARE I------+ BLACK-BROWN ,4 
BROWN-BLACK 
15 
YELLOW-BLUE 
41 
17 
BLUE-YELLOW I6 1 YELLOW-ORANGE ,~ 1 ’ -I 
,q / “?%tE ( SPARE 1 - GREEN 1  1 RED / ;i ORANGE-YELLOW/ ” 1 , YELLOW-GREEN 
GREEN-YELLOW ‘* 
YELLOW-BROWN 
.n 43 ~ 1L DATA 
YELLOW 
18 35 
PAIR 
BLACK 
44 36 
VOICE GREEN 37 
--...  19 SPARE  BROWN-YELLOW 1 ‘= 1 19 
YELLOW-SLATE ’ __ SLATE-YELLOW VIOLET-BLUE 
BLUE-VIOLET FROM 
VIOLET-ORANGE SMDR 
TELCO 
ORANGE-VIOLET LINE 7 
VIOLET-GREEN 40 
COMM. CONTACT 1 I I GREEN-VIOLET 23 FnnU TIP 
23 1 GREEN I 45 
AUDlt 3. CONTACT . .._... 
TELCO RING RED 46 
VIOLET-BROWN 
24 49 &A17 . CONTACT A YELLOW 
BROWN-VIOLET 47 
24 AUDIB. 
CONTACT LINE 8 Al 
BLACK 46 
VIOLET-SLATE 25 
50 POWER TIP 
-  SLATE-VIOLET 
. 25 
FAIL RING SPARE GREEN 49 
m 
Figure 5. 
KSU To Station Wiring 
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							Installation IMI 66-031 . 
. . 
CHECKOUT 
The system operating features are set to the system default conditions 
at initial power up. These conditions provide a basic operating 
system. 
They can 
be altered as described in the Chapter 4 Class Of 
Service programming discussion; however, the 
system should be 
initially checked out with the default conditions in place. 
The system default conditions are as follows. 
-All lines are DTMF 
-Voice signalling attempted first when intercom call 
is made 
-1 sec. pause time 
-2 sec. dial tone recall time 
-30 sec. recall from hold 
-All lines private 
-All lines are CO lines 
-300 msec. held call abandon time 
-No ringing line preference enabled 
-No prime line is chosen 
-DSS/BLF port is disabled 
-PA port is disabled 
-No delayed ringing enabled 
-No access denied 
-No origination denied 
-No automatic privacy released 
-Day and night ringing patterns set as follows: 
-station 10, 
17, and 24 all lines 
-System-wide, all call paging in zone D 
-SMDR port set for 110 baud data rate 
-Line select buttons l-n selects lines l-n 
(squared pairing) 
Whenever the system is operating, 
default conditions can be reset from 
station 10 per the following instructions. 
1. 
Press the 
ITCM button. 0 
2. Press the following keys 
@maa@@@@ 
3. Press the 
MONITOR 
0 button. 
Check the KSU and telephone installation for proper operation by 
performing the following actions. 
1. 
Before any AC power is applied to the system, measure the 
resistance across each station voice and data pair. Disconnect 
the 250pair cables from the KSU at the 66M-xx connector blocks but 
leave the stations connected. Make the measurements from the 
blocks (refer to Figures 4 and 5 to identify the connection points 
of the voice and data pairs). The measured resistance must be as 
follows: 
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