NEC Electra 616 General Installation Manual

							NEC
Electra – 616
(With Addendum-001) 
						

							c 
110 
120 
130 
140 
150 
160 
CONTENTS 
Page 
Installation Site Requirements . . . . . . . . . . . . . . . . . . . . . . . 1100-1 
110.1 Physical Environment of Equipment 
Electrical and Grounding Requirements 
. . . . . . . . . . . . . . . . 100-l 
120.1 AC Power Requirements 
120.2 Grounding Requirements 
Other 
Considerations . . . . . . . . . . . . . . . . . . . . . . . 
130.1 Electrical Noise Generators 
130.2 Pre-installation Site Survey 
130.3 Additional Equipment 
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
140.1 
System Capacity 
1402 
Cabling Requirements 
140.3 Power Requirements 
440.4 Surge Protection 
140.5 Environmental Conditions 
140.6 CO/PBX Line Type 
140.7 Dimensions and Weight 
140.8 Network and Control 
140.9 Visual and Audible lndhtions 
140.10 Dialing Specification 
_ . 
140.11 External Equipment Interfacing 
. . . . . . . 100-2 
. . . . . 100-2 
List of Equipment . . . . ..*........a...*............ 100-5 
150.4 General Information 
150.2 Equipment Description 
System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 -7 
160.1 To Determine Required Equipment 
1602 To Determine 
Optional Equipment  
						

							p SECTION 100 GENERAL INSTALLATION 
110 
Installation Site Requirements 120.2 Grounding Requirements 
110.1 Physical Environment of Equipment 
The following conditions should be met at the site 
chosen for mounting the central equipment (Key Service 
unit>. 
The KSU must be well-grounded. If a good conduit 
ground is not present at the dedicated AC outlet, the 
following steps should be taken: 
1. The KSU should normally be wall-mounted to protect 
against accident or flooding. Where possible 
use of a 
wooden backboard is recommended for this purpose. 1. Provide a suitable waterpipe ground in accordance with 
the local operating (telephone) company procedures. 
2. The KSU should not be located directly beneath pipes 
due to the possibility of leaks or condensation causing 
damage. 2. If no waterpipe is available, a ground rod should be 
installed in accordance with local operating company 
procedures. 
3. The area in which the KSU is located must be free of: 
corrosive or inflamable gases, excessive chemical or in- 
dustrial dusts, and other materials which could cause 
hazard to personnel or to the proper functioning of the 
equipment. 3. In the case where a ground other than conduit ground 
is used a grounding terminal is provided on the ES-6 -1 
as shown below in Figure 120- 1. 
t’ 4. Heat and humidity must be within the limits found in 
Section 140 “Specifications” in this manual. 
5. Although its virtually noiseless operation allows a wide 
choice of installation sites, care should be taken that 
the KSU not present a hazard to office traffic. For 
purposed of economy a central location (to minimize 
cabling) is often preferable. 
/ 
// 
# 
T 
PS-6-l PSU 
I I 
720 Electrical and Ground Requirements 
120.1 AC Power Requirements 
1. They system should have a dedicated 117V AC outlet 
separately fused for 15 AMPS. 
2. The 
AC outlet should be a standard 12SV three-prong 
type which provides conduit ground. 
3. The AC power must be within the limits found in Sec- 
tion 140 “Secifications” in this manual. ‘1 
Fig. 120-l Qutsideview of ES-G-1 
4. 
If the AC outlet is subject to power surges, it is re- 
commended that the best locally available AC surge 
protection be installed. 
Page 108-l  
						

							/ 
130 Other Consideratiaons 
130.1 Electrical Noise Generators 
Certain 
equipment, such as welding machines, 
thyrister-driven power supplies, large electrical motors, etc. 
generate electrical noise. As a stored program machine the 
Electra-616 System is vulnerable to this noise. When this 
type of machine is present at an instahation, the following 
precautionary steps are urged: 
1. Locate KSU, telephone sets, and cabling away from 
these machines. 
2. If cables must pass near these machines, use shielded 
cabIe with the shield grounded. 
3. Ensure all machines of this type are well-grounded to a 
separate ground to minimize noise interference. 
130.2 
Pre-installation Site Survey 
Since a pre-installation survey is generally required 
to plan for application and installation, a check of the 
matters covered so far in this section at this time will pre- 
vent later problems. 
130.3 Additional Equipment 
In addition to electronic station equipment and 
the KSU and their contents, other equipment is required. 
This includes cables, modular connecting jacks, quick- 
connect blocks (or smimlar apparatus), etc. This additional 
equipment must be locally supplied. 
- “g-‘ 
: >; 
a; 
3 
. ..+ 
.5> 
__._ 
‘P 
^ 
‘2: 
.+iy 
:,. 
:ig; 
‘?:9 
140 Specifications ._>. ;y ,’ 
:; 
140.1 System Capacity Lt.. : 
The Electra-616 system capacity is as follows: x 
CO/PBX Lines 
6max. 
Intercom Paths 
2 max. 
Internal and External Paging 
Path 1 max. 
Station Sets 
16 max. 
BLF Consoles 
2 max. 
.k. Door Phones 2 max. 7, 
140.2 Cabling Requirements 
1. 
Cabling required for Key Telephone Sets, BLF Con- 
soles, Door Phones is as follows: 
1) Required Cable 
- Key Telephone Set: Twisted 2-pair cable 
- BLF Console: Twisted 1 -pair cable 
- Door Phone: Twisted 1 -pair cable 
2) Maximum Loop Resistance and Cable Length at 
24AWG 
- Key Telephone Set: 40 ohms, 700 ft. (21Om) 
- BLF Console: 40 ohms, 700 ft. (21Om) 
- Door Phone: 40 ohms, 700 ft. (210m) 
3) Maximum Cable Length at 22AWG 
* Key Telephone Set: 1,150 ft. (35Om) 
- BLF Console: 1,150 ft. (35Om) 
- Door Phone: 1,150 ft. (35Om) 
2. BLF Consoles require a local power supply (provided 
with each unit), which plugs into a 117V AC outlet. 
The cable provided with these units is 6 feet in length. 
Page 100-2  
						

							I 3. Fuse Replacement 
Replace fuses in accordance with Table 140- 1. 
Table 140-l Fuse Specifications For PS-6-1 and KSI-S 
. . 
‘*a 
Note 1: FI is 1/4”x I-1/4”size normal blown glass tube or 
ceramic fuse. Buss 3A G 125 V., 4A fuse. 
Note2: KSI-S Fl - F8 are 13/64” c 45164” (S mm x 20 
mm) size normal blown glass tube fuse. Buss GMA 
I25 V., O.SA fuse. 
Do not install any ‘slow blow” fuses in the ES-6-I 
KSU. 
140.3 Power Requirements 
1. AC Input 
- 117V AC f 1 O%, SO or 60Hz + 1 O%, single phase 
. Max. current draw: 4.OA 
* Dedicated outlet separately fused at 15A max. 
2. Power Supply Outputs (PS-6 - 1) 
DC Voltage Max. current 
+5v + 0.25v 4.OA 
+12v 5 O.5V 1.2A 
+24V it 1 .QV 2.OA 
+41v * l.OV 1.4A 
3. BLF Console Power Supply 
Output Voltage: 9vDC 
Max. Output Current: 0.3A 
140.4 Surge Protection 
If an installation is subject to AC power surges it is 
recommended that the most effective locally available form 
of surge protection be supplied. CO Lines are protected by 
the local operating (telephone) company. It is recommend- 
ed that the most effective locally available form of protec- 
tion be installed on CO/PBX lines by the local operating 
(telephone) company. 
(~__-___-.~-___./ 
Note: 7his is NOTa recommendation that more than one 
set of protectors be installed on CO lines at instaila- 
tion premises. Improper installation of additional 
protection can be a serious safety hazard. 
140.5 
Environmental Conditions 
1. Temperature: 
pperating: +32” F- 104°F (O”C- 
40°C) 
Recommended long term: +50”F- 90°F 
2. Humidity: 
Operating 10 - 90 percent 
140.6 CO/PBX 
Line Type 
CO/PBX Line Type: 2 wire, loop start 
140.7 Dimensions and Weight 
ES-6-I KSU 
W/PSU 
ET-6-I TEL 
EB-6-1 BLF 
DP-6-1 
Door Phone 490(W) x 195S(D)x 421(H)mm, 
40 Lbs (I 8kg) 
210(W) x 222(D) x 82(H)mm, 
2.9 Lbs (1300g) 
75(W) x 222(D) x 82(H)mm, 
1.3 Lbs (600g) 
100(W) x 132(D) x 31.5(H)mm, 
0.4 Lbs (200g) 
140.8 Network and Control 
1. Control 
. 
. 
. 
. 
. 
. 
. 
. 
. 
. Control: 
Central processor: 
Microprocessor in keyset: 
Clock (KSU-keyset): 
Transmission data: 
(from KSU to keyset) 
Scanning time for each 
keyset: Stored program 
8085A 
pCOM43N (4 bit one- 
chip microcomputer) 
33kHz 
9 bits 
Every SO msec. 
Number of cable pairs from 2 pair wire for keyset 
KSU to each station: 
For keyset, one pair: Voice and signalling 
one pair: Data sending and re- 
ceiving 
For Door Phone, one pair: Voice and signalling 
For BLF, one pair: 
Data receiving 
Page 100-3  
						

							2. Network 2) Intercom call 
- Matrix: Single stage, non block- 
ing C-MOS switch ar- 
ray 
Electronic circuit using 
custom LSI (Equivalent 
to 500 type standard 
network) - Calling signal for 
called station: 
. Keyset network: 
- Transmitter and 
Receiver 
: 
Dynamic type 
(Equivalent to 500 type 
standard telephone 
transmitter and 
receiver) 
3. Transmission 
- Cross talk attenuation: More than 75 dB for 
- Insertion loss, 
station to trunk: 300-3, SOOkHz 
Less than 1.8 dB at 
IkHZ 
140.9 Visual and Audible Indications 
1. Visual 
Lamp indications of a Keyset are as follows: 
* Idle condition: 
- Busy CO/PBX and 
intercom path: 
- Incoming CO/PBX and 
intercom call: 
* Call hold CO/PBX: 
- I-Hold indication 
(CO/PBX): 
* Hold reminder: 
2. Audible Indication 
I) CO/PBX call 
- Incoming call on 
CO/PBX (idle): 
* Incoming call on Not lit 
Steady light 
Flashing light at 601PM 
Winking light at 
‘120IPM 
Intermittent wink light 
Flashing light at 
6OOIPM 
483Hz/64SHz modu- 
lated by lOHz, 1 
sec. 
ON/1 sec. OFF 
1200Hz/580Hz 
CO/PBX (Receiver off 
hook): 
* Hold reminder: 1200Hz, 
0.5 sec. ON/O.5 sec. 
OFF * Ringback tone: 
- Busy tone: 
- Call waiting tone: 
- Override tone: 
- Error tone: 
* Store speed dial tone: 
140.10 Dialing Spxification 
1. 
Dial Pulse Address Signalling 
a) Pulse rate: 
b) Percent break: 
c) Interdigital interval: 
2. DTMF Address Signalling 
a> 
Voice signaIling after 
tone burst (580Hz, 
0.75 sec.) 
580Hz,O.75 sec. 
580Hz, 
0.5 sec. ON/OS sec. 
OFF 
1200Hz, 
0.5 sec. ON/O.5 sec. 
OFF 
58OHz, 0.75 sec. 
1200Hz, 
0.25 sec. ON/O.25 sec. 
OFF 
580Hz 
10 pps or 20 ppS 
61 t 3 percent 
800 msec. 
Frequencies: Two sinusoidal signals, 
one from a high group 
of three frequencies 
and one from a low 
group of four frequen- 
cies. 
7 
Nominal High Group 
Frequencies (Hz) 
1209 1336 1477 
--- 
69J 1 2 3 
Nominal 
770 4 
5 6 
Low Group 
Frequencies (Hz) 852 7 
8 9 
w* 0 # 
Frequency deviation: Within * 1.5% 
Page 100-4  
						

							.-,_ ,. 
c) Signal level 
- Minimum level per 
frequency: 
Low group: 
High group: 
d) Duration of two 
frequency signal: 
e) Interdigital time: 
3. Dialing Memories 
a) Last COjPBX Number 
Redial: 
b) Speed Dialing-Station: 
c) Speed Dialing-System: -1OdBm 
- 8dBm 
60 msec. min. 
00 msec. min. 
16 digits max. 
(including pause) 
16 numbers (16 digits, 
including any pauses) 
4q numbers (16 digits, 
including any pauses) 
140.11 
External Equipment Interfacing 
1. External Paging 
- Output power: 1 watt 
? 
- Required speaker 600 ohms 
inpedance: 
2. Output to External Amplifier for External Paging 
- Output power: -1.5 dBm 
- Output impedance: 600 ohms 
3. BGM Input to PBS-S 
- Input level: 1 watt (nominal) 
- Required output 600 ohms 
impedance of 
amplifier: 
4. MOH Input 
Input level 
Required output 
impedance of signal 
source 
: 
lm watt (nominal)/8 
ohms 
8 ohms 150 
List of Equipment 
150.1 General Information 
1. The Key Service Unit (ES-6-1 KSU) comes equipped 
with two common control cards {CPU-S KTU, 
CLK-S KTU), a power supply (PS-6-1 PSU), and an 
Installation Service Manual (ND- 173 14). A wall 
mounting bracket is also supplied for wall mounting 
the KSU. All other equipment must be ordered accord- 
ing to application requirements. All customer-provided 
optional equipment (external amplifier, MOH music 
source, speakers, etc.) must be locally provided. 
150.2 Equipment Description 
1. 
2. 
3. 
4. 
5. ES-6-1 KSU (Key Service Unit) is the Key Service 
Unit. This steel cabinet houses two common cards, 
Power Supply and various Key Telephone Units 
(KTUs). It provides service for up to 6 CO/PBX lines, 
16 Keysets, 2 Door Phones, 2 BLFs and various system 
options. 
PS-6-1 PSU is the Power Supply required for the 
ES-6-l KSU. The PS-6- 
1 is provided mounted in the 
ES-6-l KSU and supplies the required voltages to 
KTUs installed within, and station equipment con- 
nected to the ES-6-1 KSU. 
CPU-S KTU (Central Processing Key Telephone Unit) 
is composed of three sections: the Central Processor, 
The ROM section for storing the generic programmed 
instructions, and the RAM section for storing system 
configuration and day to day data. The CPU-S KTU 
conains an 8085A 8 bit microprocessor which ex- 
ecutes many different functions under the control 
sequence of programmed instructions stored in ROM. 
The CPU-S KTU is provided installed in the ES-6-l 
KSU. 
CLK- I KTU (Clock Generator Key Telephone Unit) is 
composed of 5 sections: The I/O section distributes the 
data signals sent to or from the CPU. It provides an 
amplifier for internal paging, clocking for rotary dial 
pulse signalling and a control circuit for external 
CO/PBX signal!ing. The Tone source section of the 
. 
CLK generates the signal for COjPBX ringing in the 
system. 
DCI-S KTU (Dial Pulse Converter Interface Key 
Telephone Unit) provides circuits to serve up to 3 
CO/PBX lines and contains circuitry for CO/PBX ring 
detection, hold and control functions. It also sends 
rotary dial pulse signalling to CO/PBX lines in accord- 
ance with dialing from keysets. A DCI-S KTU and a 
MFI -S KTU can be mixed in a system. 
Page 100-5  
						

							6. MFI-S KTU (Dual-Tone Multip Frequency Interface 
Key Telephone Unit) provides circuits to serve up to 3 
CO/PBX lines, and contains circuitry for CO/PBX ring 
detection, hold and control functions. It also sends 
DTMF dial signalling to CO/PBX lines in accordance 
with dialing from keysets. A MFI-S KTY and a DCI-S 
KTU can be mixed in a system. 
. 7. 
8. 
9. 
10. 
11 
KSI-S KTU (Keyset Interface Key Telephone Unit) 
provides data control to the Electronic Key Telephone 
set (ET-6-l). Each KSI-S KTU provides circuits to 
serve up to 8 Electronic Key Telephone Sets. 
SWM-S KTU (Switch Matrix Key Telephone Unit) 
contains a 8 x 12 semi-conductor switching matrix for 
connection of keysets to CO/PBX lines, intercom paths, 
door phones, and paging trunks. Each SWM-S con- 
nects 8 keysets to 3 CO/PBX fines, 2 door phones, 2 
intercom paths and internal and external paging 
trunks. Each SWM-S provides a talk battery supply for 
up to 8 ET-6- 1 Telephones. 
ET-6- 1 Telephone is a fully-modular push button dial 
electronic key telephone set with 35 nonlocking 
buttons, a 2 digit LED display and a speaker and micro- 
phone for voice page and handsfree answerback on 
ICM calls. 6 of the buttons are CO/PBX line buttons, 
13 buttons are function buttons, and 16 buttons are 
used both for DSS (Direct Station Selection) and 
Station Speed Dialing. Each keyset requires 2 pair cabl- 
ing to the Main Distribution Frame (MDF). 
AHR-S KTU (Automatic Hold Release Key Telephone 
Unit) serves up to 6 CO/PBX lines. This option provides 
for restoration of a held line to idle status when the 
outside party abandons the call. A timed disconnect 
signal must be sent from the central office or PBX to 
activate this feature. One AHR-S KTU can be installed 
in the ES-6- 
1 KSU for this feature. 
Page 100-6  PBS-S KTU (External Paging/Busy Lamp Field/ 
Security Key Telephone Unit) provides circuitry for 
three optional features. It contains a l-watt amplifier 
and a control circuit for single-zone external paging. 
For applications where a l-watt amplifier is insuffi- 
cient, a locally provided high power amplifier may be 
used in addition to the PBS-S KTU. The Busy Lamp 
Field circuitry to detect a signal from an external 
source which activates an audible alarm in idle key- 
sets and a visual alarm in the display of all keysets. 
Two security circuits are provided for this purpose. When any combination of these features is 
required in 
the system, one PBS-S KTU must be installed in the 
ES-6-l KSU. 
r-- --- ----- 
j Note: 7Yhis security feature should not he used a$ a 
prirrwry 
I 
i- 
12. 
13. 
14 
sOurce of protection. A power otrtoge or component failure, for example. will not result in ,gn alarm indi_ cation. 
-- --..-.-_-_. 
DPH-S KTU (Door Phone Key Telephone Unit) 
contains amplifiers and voice switching circuits to 
provide a 2-way communication to keysets in the sys- 
tern. It can also be used as a monitor phone in areas 
where monitoring of audible activity is desired. This 
KTU can serve up to 2 door/monitor phones and can 
provide a tone to signal assigned keysets programmed 
to ring when the door phone is activated. 
DP-6-l Door Phone is a speaker unit with a speaker, 
microphone, and a control button to provide two-way 
communication to any keyset in the system. With the 
DPH-S KTU installed in the KSU up to two door 
phones can be connected at the Main Distribution 
Frame (MDF). One pair cabling is required for each 
door phone. 
DB -6 - 
1 BLF is a modular Electronic Busy Lamp Field 
withe 21 LEDS. 16 LEDS show station status, 1 LED 
each shows paging status (both internal and external), 
Night Transfer, and BLF Power On status. 2 LEDs 
show the status of the door phones. The EB-6- 1 
comes equipped with a local power supply with a 117V 
AC plug and requires 1 pair cabling to the Main Distri- 
bution Frame (MDF). 
. .  
						

							160 System Configuration 
160.1 To Determine Required Equipment 
1. Determine how many electronic key telephones are re- 
quired in the system. Refer to Table A if the number 
of keysets are 8 or less. Refer to Table B if the number 
of keysets are more than 8. 
2. Determine how many CO/PBX lines are required. The 
result will tell you which line of the selected table to 
use. See Table 160-l. 
Table 160-l Required Quantities of KThls 
TABLE A: Total Number of Keysets is 1 - 8 TABLE B: Tota! Number of Keysets is 9 - 16 
COIPBX LINES OCIS/MFIS SWMS KSI-S 
/ / 1 
1 CO/PBX LINES / DCIWMFIS 1 svw-s KSIS 
.I 
l-3 1 1 1 
I / t I 4-6 I I 2 I 1 I 
I l-3 I i 2 I 2 I 
4-6 
2 2 2 
I 
Note: Power Failure hansfer is provided in ES-6-I KSU for CO/PBX Lines 1 and 2. 
160.2 To Determine Optional Equipment 
1. Required KTUs for options are: 
Table 160-2 
OPTION 
Automatic Hold Release AHR-S 1 
Door Phone DPH-S 1 2 Door Phones 
External Paging PBS-S 
1 
t- _-_--_+ I ! I BLF Console PBS-S 1 
2 BLF Consoles 
Security Alarm PBS-S 1 
Note: One PBS-S KTU provides circuits for external paging. 2 BLF consoles, and 
2 security alarm circuits. 
6 
Page 100-7  
						

							/--- CQlP0X  
123 456 
---_------__ 
-I 
I 
I 
I 
1 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
1 I 
2 
SWM 2 
i I I I 
DOOR PHONE 1 
DOOR PHONE 2 
---I-l PS-6-! 
EXT. SPEAKER 
SECURITY I 
I 
CONTROL 
EQUIPMENT 
Page 100-8 
[ 13 installed in ES&l KSU 
Fig. 160-l System Block Diagram