Comdial Executech Model 616, 616b ELECTRONIC KEY SYSTEM Instructions Manual

Installation 
CHAPTER 2 
INSTALLATION 
IMI 66-037 
MOUNTING CONSIDERATIONS 
KSU Mountinq 
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The KSU cabinet should be attached vertically to any sturdy, - 
flat, surface. It may be vertically rack mounted if desired. It 
must be located within 6 feet of a properly grounded, three-wire, 
117VAC, electrical outlet. The distance between the KSU and the 
TELCO/PBX jacks must be 25 feet or less as per FCC requirements. 
A nominal distance of 7 feet is recommended. 
v 
Choose a secure, 
dry...

Installation IMI 66-037 
10 INCHES 
I I 
Figure 1. KSU Mounting Dimensions 
Tele&?h,o_n$ ge;t, Mount b-q 
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Place the individual telephone stations as desired and in keeping 
with accepted industry and office standards. 
A telephone station can be wall mounted if necessary. Use a wall 
mounting bracket (part number 701032-056) for this 
purpose. 
CABLE ROUTING 
Cable may be routed concealed or visible as the installation 
location requires. Good engineering practices must be observed...

Installation 
IMI 66-037 
CONNECTIONS 
Line C.o.n.n.e.ct.ions 
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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 cable is determined by the limitations detailed 
above. - 
A-Lead Control 
The KSU inputs of TELCO lines 5 and 6 are configured to detect an 
A-lead (A and Al) control signal when it is applied at the TELCO 
input to the KSU. 
A typical use of A-lead control signal 
detection...

Installation IMI 66-037 
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. 
Doing so will make a pair of stations inoperative. 
. 
3. After making the wiring connections discussed above and 
illustrated in Figures 2, 3 and 4, double check all 
connections and cable routing to insure accuracy. 
Whena serial data printer is used for 
COS printout, connect it to 
clips 41, 42 43, and 44 of station...

Installation 
IMI 66-037 
To apply AC power to the KSU, 
connect the AC power cord to a 
properly grounded, three-wire, 117VAC electrical outlet. A 
plug-in, power line surge protector should be installed between 
the KSU power cord and the AC outlet. Many different models of 
surge protectors are commercially available for this purpose. _ 
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...

Installation IMI 66-037 
l----1 CLIP TERM 
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I :NST”ERNAL ‘. 24V@ 0.4A MAX 
----- + 
OUTPUT AS 
REQUIRED BY 
RELAY COIL LOW 
A 
VOLTAGE ’ 1 1 
- -.. -- 
POWfLK 
SUPPLY  I 
Y 
AC 
1 
P-t VOLTAGE CLAMPING DIODE 
RECOMMENDED 
C INPUT 
Figure 2a. 
Model 616B External S 
ignalling - Typical Connection 
EXT.TERM.l or3 
- 
KSU 1 
INTERNAL 
SWITCHING 
t--H 
VOLTAGE CLAMPING DIODE 
RECOMMENDED 
INPUT 
Figure 2b. Model 616 External Signalling - Typical Connection 
24  

Installation 
IMI 66-037 
&$ial. &g$.s,z $&& Ad.d.r.es.s+. .&-es Em& 
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@% ~QG& &&&QQ QQJ&, can be programmed to he a PA station port 
instead of a telephone station (see Chapter 4, 
programming details). 
When this is done, Section 2 for 
the audio input of a PA 
amplifier can be connected to this station connection audio pair 
as illustrated in Figure 5. 
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...

Installation IMI 66-037 
A line port can be configured by Class Of Service (COS) 
programming (see Chapter 4) to be an AUXILIARY port. 
As an 
AUXILIARY port, it can be used to couple a station 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...