Inter-Tel 824 Installation And Field Maintenance Manual

							INTER-TEL PRACTICES OVERVIEW 
824 II!JSTALLATION & MAIWl!ENANCE Issue 1, June 1984 
OVERVIEW 
CONTENTS PAGE 
1. 
2. 
3. 
4. 
5. 
1. INTRODUCTION ............................................ l-l 
HARDWARE S-Y ........................................ l-1 
IHSTALLATION SUMMARY .................................... 1-2 
MAINTENANCE S-Y ..................................... 1-3 
FEATURES AND PROGRAMMING SOMMARY........................ l-3 
INTRODUCTION 
1.01 The 824 system is a versatile electronic key telephone sys- 
tem designed to meet the needs of growing businesses. Modular 
design makes the system easy to install and service, and the pro- 
grammable features provide a variety of services to meet each 
customers needs. 
The system has capacity for eight Central 
Office (C.O.) lines, 24 stations, two intercom paths, and one 
path for paging. 
1.02 This manual, geared especially to service personnel, ex- 
plains installation, programming, operation and maintenance of 
the system. 
1.03 Another Inter-Tel publication for this system is the 824 
Owners Guide (part number 247.8001-o). Its purpose is to pro- 
vlde the user and sales person with an overview of the system 
hardware and a complete operation manual. 
2. HARDWARE SUMMARY 
2.01 The SYSTEM SPECIFICATIONS section of this manual describes 
the hardware. As a brief introduction, this section includes the 
Key Service Unit (KSU), Keysets, and Door-Mates. 
. 
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							INTER-TEL PRACTICES 
OVERVIEW 
824 INSTALLATION h MAINTENANCE Issue 1, 
June 1984 
,, 
A. KEY SERVICE UNIT jKSU) 
2.02 The Key Service Unit (KSU) houses the circuit boards and 
the system power supply. 
The KSU performs all control and 
switching activities 
for the system. 
incoming calls, This includes detecting 
processing data-controlled features, and control- 
ling the interaction between stations, C.O. lines, and intercom 
paths. 
B. 
KEYSETS 
2.03 Four types of keysets 
are used on the 824 system. 
They 
are the Standard Keyset, Display Keyset, 
and Display and Standard 
Power Failure Transfer Keysets. 
The Display Keyset has a 16- 
character liquid crystal display (LCD) for 
showing applications 
in use, 
such as number dialed, keyset status, date and time, 
messages, etc. 
2.04 In case of power failure, special switching circuitry in 
the KSU controls the switching of the C.O. lines to the appro- 
priate Power Failure Transfer (PFT) Keysets. 
These PFT Keysets, 
which are used as regular keysets during normal operation, allow 
incoming calls to be answered during a power failure. 
C. DOOR-MATES 
2.05 The Door-Mate is an optional piece of equipment which can 
be used as a talkback speaker in remote locations. 
Keysets are 
programmed to answer or call the Door-Mate. 
3. INSTALLATION SUMMARY 
3.01 In addition to the SYSTEM SPECIFICATIONS section, the 
INSTALLATION 
SeCtiOn gives 
complete instructions to plan the in- 
stallation and install the system. 
3.02 A floor plan 
should be developed in preparation 
for in- 
stallation. 
The mounting board for the Main Distribution Frame 
(MDF) should be made large enough to accommodate the Key Service 
Unit (KSU), connectors, external equipment, 
and allow room for 
expansion. 
3.03 The KSU location should be planned in relation to its en- 
vironment, power requirements, 
and the length of the cabling 
necessary to connect it to the stations. 
. 
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							INTER-TEL PRACTICES OVERVIEW 
824 INSTALLATION br MAINTENANCE Issue 1, 
June 1984 
3.04 The INSTALLATION section contains instructions for install- 
ing the following: 
l Cabling 
l Main Distribution Frame (MDF) Cabling 
l Key Service Unit (KSU) 
l Keysets 
l Door-Mates 
l Battery Back-Up 
l Other External Equipment 
4. MAINTENANCE SUMMARY 
4.01 Service is designed for the modular level. In the event of 
a failure, the defective module should be replaced by the service 
personnel from their inventory of spare parts. 
4.02 All lamps used in the system are solid state, Light-Emit- 
ting Diodes (LEDS). 
The use of LEDs greatly reduces the possi- 
bility of burned out components, due to their low failure rate 
and minimal power consumption. 
4.03 This manual contains a 
TROUBLESHOOTING section and a 
DIAGNOSTIC PROGRAMMING section to aid service personnel in diag- 
nosing system problems. The REPLACEMENT PARTS section lists 
parts available from Inter-Tel. 
4.04 Strict quality assurance standards for 
manufacturing and 
through field testing provide the system with the high degree of 
reliability demanded by todays 
high-technology market. 
5. FEATURES AND PROGRAMMING SUMMARY 
5.01 The FEATURES section of this manual 
provides an in-depth 
explanation of the available features. The SYSTEM PROGRAMMING 
section provides complete programming procedures. If a feature 
requires programming or additional equipment, this information 1s 
given. 
.. 
5.02 Features requiring additional hardware include: Station 
Message Detail Recording (SMDR), Door-Mates, remote contacts, 
external Music-On-Hold, battery back-up, and external 
paging. 
5.03 Programming is performed through a programming terminal and 
through the CPU PCB Maintenance Panel. Available features in- 
clude: 
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							INTER-TEL PRACTICES 
824 INSTALLATION Sr MAINTENANCE OVERVIEW 
Issue 1, June 1984 
proqramminq Terminal 
l Station Speed Call List 
l Keyset Monitor 
0 Station Monitor 
0 C.O. Line Monitor 
0 Station Set-Up Data 
l Toll Restriction Programming 
l Name Registration 
l Message Registration 
.O Flexible Ringing Arrangement 
l Immediate Ringing 
l Four Toll Restriction Classes 
l Account Codes on Station Message Detail 
CPU Maintenance Panel 
0 C.O. 
Line Equipping 
l DTMF or Dial Pulse Signalling 
0 Incoming Ring Tone 
l FAX Line 
l CES Ring Identification 
l PBX Access Code 
0 Intercom Number Assignment 
l Door-Mate Answering/Selectable Ring 
l Handsfree Answering/Voice Announcing 
l System Hold and I-Hold 
a Page Zones 
l Long Speech Warning 
l Toll Restriction Classes 
0 C.O. Line Restriction 
0 Direct Ring-in on C.O. Lines 
l Calendar and Clock Settings 
0 System Speed-Dial Number Clear 
l Station Speed-Dial Number Clear 
0 Conference Calls 
l Auto Key Feature 
l Hold Recall Timer 
l Transfer Recall Timer 
l Dial Tone Enable/Disable 
0 Meet Me Page and Intercom 
0 Station Message Detail Recording (SMDR) Recording (SMDR) 
,’ 
. 
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							INTER-TEL PRACTICES SYSTEM SPECIFICATIONS 
824 INSTALLATION & MAINTENANCE Issue 1, June 1984 
SYSTEM SPECIFICATIONS 
CONTENTS PAGE 
1. 
2. 
3. 
4. 
5. 
6. 
c 
7. 
8. 
9. 
1. INTRODUCTION  INTRODUCTION ............................................ 2-l 
824 KEYSETS ............................................. 2-2 
DOOR-MATES .............................................. 2-3 
EQUIPMENT DIMENSIONS .................................... 2-3 
KEY SERVICE UNIT (KSU) .................................. 2-3 
A. KSU DESCRIPTION ...................................... 2-3 
B. EXHER SUPPLY ......................................... 2-4 
C. ENVIRONMENTAL REQUIREMENTS ........................... 
2-4 
D. CENTRAL OFFICE (C.O.) LINE CHARACTERISTICS ........... 2-4 
E. PRINTED CIRCUIT BOARDS (PCBS) ....................... 2-5 
MAIN DISTRIBUTION FRAME (MDF) ........................... 2-8 
SMDR AND PROGRAMMING TERHINAL REQUIREMENTS .............. 2-8 
BATTERY BACK-UP ......................................... 2-9 
SYSTEM FEATURE CAPACITIES ............................... 2-11 
1.01 The 824 system can be configured with 8 C.O. lines and 24 
keysets. The whole system operates from theKey Service Unir 
Four keyset models are available, including Standard and Display 
keysets, and Standard and Display keysets with Power Failure 
Transfer. Optional hardware features include Door-Mates, Station 
Message Detail Recording output device, battery back-up, external 
paging, external music, .and remote contacts. 
1.02 Hardware comprising the entire system is described in this 
section of the manual. In addition, Section 9 lists system fea- 
tures which have capacities (or quantity limits). Photographs 
of the keysets, Door-Mate, 
and Key Service Unit are located at 
the end of this section. For installation methods, refer to the 
INSTALLATION section. 
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							INTER-TEL PRACTICES 
SYSTEH SPECIFICATIONS 
824 INSTALLATION & MAINTENANCE 
Issue 1, 
June 1984 
2. 824 KEYSETS 
2.01 A maximum of 24 keysets may be connected to the KSU. 
Stan- 
dard and Display keyset models are available, and both may be 
equipped as Power Failure Transfer units. 
For photographs, refer 
to Figures 2-1 and 2-4 on pages 2-12 and 2-15. 
Keysets are fur- 
ther described in the STATION FEATURES section. 
2.02 All keysets are 
equipped with a pushbutton keypad, eight 
C.O. line keys, 
an internal speaker, 
voice volume control, and a 
6dB receiver volume control. 
The Standard keysets have seven 
feature keys, 
while the Display keysets have ten. 
Both models 
have 24 Direct Station Selector (DSS) keys, and for Display 
keysets the DSS keys are 
Lamp Field (BLF), equipped with LEDs to serve as a Busy 
indicating station status. 
2-03 Display keysets have a liquid crystal display 
(LCD), which 
shows up to 16 characters. 
When in use, 
time, the display shows date, 
number dialed, messages, 
intercom call indications, station 
status, among other applications. 
2.04 The Power Failure Transfer (PFT) feature was developed so 
the system could receive 
incoming 
calls during power outages. 
Under normal conditions, PFT keysets operate like regular key- 
sets. When AC power is lost and battery back-up is not provided 
or has been drained, 
the system automatically switches to the 
Power Failure mode: 
calls in progress are dropped. 
Incoming 
calls ring in directly to the PFT keysets. 
2.05 The system assigns one C.O. 
line to one PFT keyset, in 
circuit number order, 
with a maximum of eight per system (not to 
exceed the number of C.O. lines equipped). 
The eight C.O. lines 
are assigned to the first eight station circuits. 
For example, 
C.O. circuit 1.1 will ring in on station circuit 1.1, C.O. cir- 
cuit 1.2 will ring in on station circuit 1.2, etc. 
2.06 Two optional devices 
are available for the keysets. 
All 
keysets may be equipped with a plastic 
number 828.1008) which extends up instruction stand (part 
from the back of the keyset. 
This stand is approximately three inches wide and will hold note 
cards. Available for the Phoenix keyset models is a card direc- 
tory (part 
number 809.1092). 
This device is 
installed on the 
bottom of the keyset. 
A tab extending out on the side of the 
keyset is used to pull this directory pad out. 
The user may 
write in telephone numbers or intercom numbers. 
: . . 
. 
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							INTER-TEL PRACTICES 
SYSTEM SPECIFICATIONS 
824 INSTALLATION & MAINTENANCE 
Issue 1, June 1984 
3. DOOR-MATES 
3.01 The Door-Mate is an optional piece of equipment which is 
used to monitor remote areas and serves as a talkback unit. 
Two 
units may be installed and keysets must be programmed to access 
them. When someone rings a Door-Mate, it is identified to sta- 
tion users by its own melody. 
Range Door-Mate #l plays Home on the 
and Door-Mate #2 plays Greensleeves. 
Volume is con- 
trolled on the DOOR PCB. 
Refer to Figure 2-5 on page 2-16. 
4. EQUIPMENT DIMENSIONS 
KSU Dimensions Keyset Dimensions 
Door-Hate Dimensions 
Height 19 in. Height 
3 in. Height 1.5 in. 
Width 14 in. Width 
8.5 in. Width 4 in. 
Depth 9 in. Depth 
8.5 in. Depth 5.5 in. 
Weight 
30 lbs. Weight 5 lbs. Weight 1.5 lbs. 
5. KEY SERVICE UNIT (KSU) 
( 
A. 
KSU DESCRIPTION 
5.01 The KSU houses the system power supply, nine-slot cardfile, 
and printed circuit boards (PCBs). 
It performs all control and 
switching activities for the system, 
detects incoming calls, 
processes data-controlled features, and controls the interaction 
between keysets, C.O. lines, and intercom 
paths. Although the 
KSU may be mounted on a shelf, 
Inter-Tel recommends to wall mount 
it. Refer to Figure 2-6 on page 2-17. 
5.02 The system is a microprocessor-controlled, 
space division 
system. 
Memory includes 48K bytes ROM and 14K bytes RAM on the 
Central Processor Unit (CPU) printed circuit board (PCB). 
Each 
keyset contains a four-bit microprocessor that communicates with 
the main microprocessor on the CPU PCB. 
5.03 The KSU contains PCBs which control and coordinate the 
functions of the system. Up to nine PCBs may be installed, 
depending on the systems 
configuration; 
only 
one PCB is 
optional. Each PCB is described in Section E. 
1 Central 
PrOCeSSOr Unit (CPU) PCB 
2 Central Office Interface (COI) PCBs 
3 Key Telephone Interface (KTI) PCBs 
1 Main Distribution Frame (MDF) PCB 
1 Miscellaneous (MISC) PCB 
1 Door-Mate (DOOR) PCB -- optional 
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							INTER-TEL PRACTICES 
824 INSTALLATIOlY & MAINTENANCE SYSTEM SPECIFICATIOBs 
Issue 1, 
June 1984 
B. POWER SUPPLY 
5.04 The power 
and Door-Mates. 
commercial power 
5.05 The power supply provides power to the KSU-, all stations, 
It requires a 105-125VAC, 
60Hz, single-phase 
source. 
supply may be equipped with battery back-up to 
- . 
- . 
support the system during a power outage or brown-out 
condi- 
tion. Refer to Section 8 for more information. 
5.06 One fuse on the power supply has a 6A 250V value. 
ing voltages and power outputs are as follows: Operat- 
+27vDc 3.2A maximum Keyset 
+5VDC 1.5A maximum 
Logic Levels 
NOTE : +5VDC is the only regulated voltage. 
C. EXVIRONMENTAL REQUIREMENTS 
Requirements 
Temperature In Operation 
32O 
to 80° F 
Humidity 
(Non-Condensing) 20% to 85% 
Altitude 
up to 10,000 ft. In Storage 
4O to 185O F 
0% to 85% 
up to 40,000 ft. 
D. CENTRAL OFFICE (C.O.) LINE CHARACTERISTICS 
Characteristics 
Protection 
Loss from TELCO to C.O. lines OdB 
Tip-to-Ring 15OOV transient 
Ringer Equivalence 0.8A 
To Ground 
1500VAC RMS 
Ringing Voltage 40-1OOVAC 
; 
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							INTER-TEL PRACTICES SYSTEM SPECIFICATIONS 
824 INSTALLATION & MAINTENANCE Issue 1, June 1984 
E. PRINTED CIRCUIT BOARDS (J?CBS) 
5.07 Descriptions of each printed 
graphs of all PCBs are located in board are given below. Photo- 
the INSTALLATION section. 
Central Processor Unit (CPU) PCB 
5.08 The systems CPU PCB contains the main controlling micro- 
processor and its associated control, logic, and memory circuits. 
This includes the central processor with up to 48K bytes of ROM 
I- storage, 14K bytes of RAM storage, system clocks, a battery for 
data base protection, 
and a Maintenance Panel for system pro- 
gramming. 
5.09 The CPU PCB provides central software control for the KSTJ. 
It functions under the control of a generic program, stored in 
the ROM, which is activated when the system is initially pro- 
grammed. 
5.10 The Battery Jumper on the PCB is shipped in the open posi- 
tion to protect the battery. It should be enabled during in- 
stallation to protect the data base. If the battery is fully 
charged, the data base will be protected for a maximum of 25 
days. 
Allow two days for the battery to charge when installing 
the system. 
Central Office Interface (COI) PCBs 
5.11 There may be two CO1 PCBs per system. There are two types 
available, one with circuitry for two C.O. lines, and one with 
circuitry for four. If 2-CO1 PCBs are installed, the PCB in- 
serted into CO1 slot 1 is assigned lines 1 and 2, top to bottom; 
slot 2 has lines 5 and 6. 
With 4-CO1 PCBs installed, slot 1 has 
lines l-4 and slot 2 has lines 5-8. 
5.12 Each circuit in the Ull sockets may be designated as a DTMF 
or a Dial Pulse circuit by inserting the appropriate chip. DTMF 
chips are assigned part number 4089; Dial Pulse chips have part 
number 400994. A switch next to each chip must be set to DP for 
Dial Pulse or PB for DTMF. 
5.13 Each circuit has a 3dB C.O. line attenuation pad to reduce 
the incoming signal on extremely hot lines. 
CO1 Jumper PCB 
 5.14 The CO1 Jumper PCB is inserted in the second COI slot when 
only one CO1 PCB is installed. It provides the C.O. termination 
to the backplane. 
* 
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							INTER-TEL PRACTICES 
SYSTEX SPECIFICATIONS 
824 INSTALLATION & MAINTENANCE 
Issue 1, June 1984 
i 
Key Telephone Interface (KTI) PCBS 
5.15 There may be three KTI PCBs per system. 
There are two 
types available; 
one with circuitry for four keysets and one with 
circuitry for eight. 
5.16 Each of the circuits on a KTI PCB is assigned a circuit 
number by the PCBs physical location in the KSU and the location 
of the circuit on the PCB. 
Intercom numbers are assigned when 
the system is initialized, but may be changed. 
Refer to SYSTEM 
PROGRAMMING. 
5.17 A l.OA 
shorts at the 
protects the 
fuses may be 
ment. power fuse on each KTI PCB protects the KSU from 
stations. 
Fuse Fl, 
a 0.3A fuse on the speech path, 
KSU from shorts on the tip and ring wires. 
The 
obtained from Inter-Tels Order Processing Depart- 
Main Distribution Frame (MDF) PCB 
5.18 The MDF PCB provides keyset connections, C.O. line con- 
nections,   a lack to attach the external music-on-hold source, an 
RS232C communications port, 
and line 
separation 
switches. 
It 
also includes connections for Door-Mates and external equipment. 
For more information on the C.0. line, 
keyset, and Door-Mate 
connections, 
refer to Section 6, 
MAIN DISTRIBUTION FRAME (MDF) on  
page 2-7. 
5.19 A l/8-inch mini-phone 
connector on the front edge of the 
MDF PCB is for an external music source. 
5.20 A 25-pin subminiature D 
female connector on the front of 
the MDF PCB is the RS232C communications port, used to attach the 
programming 
terminal and the Station Message Detail Recording 
(SMDR) output device. 
Refer to Section 7, 
SMDR AND PROGRAMMING 
TERMINAL REQUIREMENTS. 
5.21 The line separation switches are used for, 
troubleshooting 
C.O. lines. 
In order to verify a C.O. line connection, the 
Master-Tel connection (on the MISC block of the MDF) is used with 
the line separation switches (on the MDF PCB) to connect standard 
2500 sets or technicians test sets. 
By pressing the switch for 
the trouble line (l-8), 
it is disconnected from the system. 
. 
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