Inter-Tel 824 Installation And Field Maintenance Manual

							INTER-TEL PRACTICES 
SYSTEM SPECIFICATIONS 
824 INSTALLATION & MAINTENANCE 
Issue 1, June 1984 
5.22 The external equipment which can be installed with the 
system are as follows: 
A. The FAX line monitor allows the system to share a line 
with the users FAX machine. 
When the FAX machine is in 
use, the system turns on the keyset LED for that line 
number and denies access to that line. 
B. Page Zone 9 provides 
voice output connection to the 
customer-supplied external amplifier. 
The paging trans- 
fer connection is 
a make/break connection 
dependent on 
Zone 9 paging. 
C. There are three remote 
contacts which serve as 
ON/OFF 
switches. They may be connected to electrical devices 
such as lights, 
security door locks, or sprinkler sys- 
tems. They are accessed on Display keysets by pressing 
the Remote (RMT) key and digits 1, 2 or 3. 
Miscellaneous (MISC) PCB 
c 5.23 The MISC PCB includes circuitry to select either the in- 
ternal or external music-on-hold option: if internal music is 
selected, there is circuitry to choose one of two synthesized 
melodies. It also controls the external page volume, selects one 
of two ringing tones for the keysets, and generates all tones 
available in the system. 
5.24 The MISC PCB provides an AGC circuit which automatically 
holds the music-on-hold volume to a predetermined level that is 
slightly lower than the normal voice volume, 
as required by FCC 
regulations. Optimal input level is 1 VRMS. 
5.25 Switch SW0 (EXT/MSC) is used to select internal/external 
MOH. Switch SW1 (MSC A/B) selects one of two tunes for MOH. 
Switch SW2 (HI/LG) sets the ring tone high or low on all keysets. 
Door-Hate Interface (DOOR) PCB 
5.26 If optional Door-Mate units are installed, the DOOR PCB 
provides circuitry to connect up to the units. It includes a 
volume control for the Door-Mate paging and talkback functions. 
Door-Mates are terminated through the MISC block on the MDF and 
the MDF PCB. 
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							INTER-TEL PRACTICES SYSTEM SPECIFICATIONS 
824 Il!iTSTALLATION & MAINTENANCE Issue 1, June 1984 
6. MAIN DISTRIBUTIdN FRAMJZ (MDP) 
6.01 Connections between incoming C.O. lines, keysets, and the 
PCBs in the KSU are made on the Main Distribution Frame (MDF), 
which is made up of industry-standard connection blocks. 
6.02 First, two-pair cable is run to all keysets and is termi- 
nated on four-conductor modular jack assemblies. 
The other end 
of each cable is terminated on a designated MDF station (KTI) 
block. Each KTI block supports up to 12 keysets. 
6.03 Then one-pair cable is run to the two Door-Mate units. 
The 
other end is terminated on the MDFs miscellaneous (MISC) block. 
Other external hardware, such as paging equipment and remote 
contacts, is also terminated on the MISC block. 
6.04 Using a 25-pair cable, C.O. lines are connected to the MDF 
C.O. lines block from the TELCO RJ-21X or RJ-14C connector. 
6.05 Next, the KSU PCBs are connected to the MDF blocks. Four 
special cables must be made. 
Using 25-pair cable, a 50-pin 
female amphenol connector is attached to the KSU end of each 
cable; 
the other end is terminated on the designated block--one 
C.O. line block, two KTI blocks, 
and one MISC block. The inter- 
face is completed by plugging the female connector into the 
corresponding male connector on the MDF PCB. 
The MDF PCB com- 
pletes the connection to the KTI, COI, MISC and DOOR PCBs. 
7. 
SMDR AND PROGRAMMING TERMINAL REQUIREMENTS 
7.01 The following requirements must be met for the SMDR output 
device or a programming terminal to be connected to the system. 
A. Both devices must be RS232C compatible and have a male 
25-pin subminiature D connector. 
B. Both must be formatted for serial ASCII with no parity 
and must have full-duplex communications capability. 
., 
C. Both devices must communicate at 300 baud. 
Page 2-8  
						

							INTER-TEL PRACTICES SYSTEM SPECIFICATIONS 
824 INSTALLATION & MAINTEXANCE 
Issue 1, June 1984 
8. BATTERY BACK-UP 
8.01 Customer-provided batteries may be connected to the system 
to prevent loss of service in the event of a power failure. When 
the power supply off, 
the battery back-up function is automati- 
cally connected. A warning bell or light can be hooked up to 
signal the user when power drops. 
************************************************* 
* 
CAUTION * 
* If the power supply ON/OFF switch is. turned * 
* OFF, battery back-up is not enabled. To test * 
* this feature, 
unplug the AC power cord. * 
***~********************************************* 
8.02 The 824 system requires a 24VDC battery pack and must use 
lead calcium grid batteries which have a 2.27V charge per cell. 
To obtain 24 volts, batteries must be connected in series, must 
be of the same type and have the same amp-hour rating, and must 
have the same level of charge/discharge. 
8.03 The batteries are trickle-charged by a float voltage of 
27.3VDC. Calculation is made by multiplying the number of cells 
(12) by the charge per cell (2.27V). 
**************************f*ff****+****~***** 
* 
CAUTION * 
* Battery discharge time could vary depending 
* on the battery manufacturers specifications. t 
*****t******************************************* 
8.04 Two different battery sizes may be used. Battery back-up 
is selected by setting the INTERNAL/EXTERNAL switch on the front 
of the power supply. The EXTERNAL switch selects large batteries 
which are connected outside of the KSU. The INTERNAL switch 
selects small batteries which are mounted inside the K8lJ with the 
brackets provided. 
8.05 If you select the smaller batteries, you are limited to the 
amount of system support available. Two 12VDC batteries may be 
installed and the dimensions which fit the mounting brackets are 
I-3/4 high, 2-5/8 wide, and 6 deep. 
Page 2-9  
						

							INTER-TEL PRACTICES 
824 INSTALLATION & MAINTEXANCE SYSTEM SPECIFICATIONS 
Issue 1, June 1984 
8.06 Before purchasing the batteries, calculate the amp/hour 
rating. This is determined by the power needed to run the system 
and the length of time the battery pack must support the system 
if AC power fails. Calculate the rating as follows: 
(1) Determine the minimum and maximum amounts of current 
drawn by each PCB in the KSU, using the following cur- 
rents. The minimum values represent the circuitry in an 
idle condition (no calls in progress). Maximum values 
represent the circuitry in an active condition. The CPU 
figures include the current drain caused by the power 
supply circuitry. 
. 
-. 
PCB Minimum 
bps) Maximum 
(amps) 
CPU . 136 ,138 
4-KTI (4 Display keysets) .334 415 
8-KTI (8 Display keysets) ,478 :595 
2-co1 .085 . 087 
4-CO1 .085 087 
MISC . 110 :112 
DOOR . 015 .017 
(2) 
(3) Add the currents of all PCBs to determine the total 
system current. Be sure to multiply the individual PCB 
currents by the number of identical PCBs in the system. 
Using the chart below, first locate the calculated bat- 
tery current in the left column. Then move across in 
that row until you reach the column with the desired 
back-up hours. The figure shown is the battery amp-hour 
rating to ask for when purchasing the batteries. 
Battery 
Current 
(amps) Back-Up Time (Hrs) 
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							INTER-TEL PRACTICES 
824 IBSTALIATION br MAINTENANCE SYSTEM SPECIFICATIONS 
Issue 1, June 1984 
9. SYSTEM FEATURE CAPACITIES 
9.01 Below is a summary of system feature capacities; that is, 
features which have usage or installation limitations. 
Keysets (maximum combinations) 
Standard Keysets 
Display Keysets 
Power Failure Transfer Keysets 
(Standard or Display) 
Speech Channels 
C.O. Lines 
Intercom Paths 
Paging Paths 
Music-On-Hold Source 
Features with Capacities 
Paging 
Internal Zone Page 
External Zone Page 
All-Page 
Speed Calling 
System Lists 
Station Lists 
Numbers per System List 
Numbers per Station List 
Digits per Entry 
Simultaneous 3-party Conference Calls 
Queueing per C.O. Line 
Call Waiting 2: ... 
100 
24 
16 
2 or 4 (See Note) 
5 
_ 
Intercom Call Waiting Initiated per Station 
Intercom Calls Waiting at a Station 
C.O. Calls Waiting at one Station 
Toll Restriction 
Allowed Area Codes 
Classes of Service 
Designated WATS Lines 1 
1 
8 
30 
,4 
‘. 8 -_ 
NOTE: The number of simultaneous conferences depends on the type 
There can be a maximum of two simultaneous  of conference. 
conferences if 
party, because 
conference has 
it is possible 
the eight C.O. 24 
24 
24 
8 
8 
2 
1 
1 
3 
1 
1 
each has two inside parties and one outside 
it uses the two intercom paths. 
If each 
one inside party and two outside parties, 
to have four simultaneus conferences, using 
lines available. 
Page 2-11  
						

							INTER-TEL PRACTICES 
824 I?!ZSTALLATION & MAINTENANCE SYSTEM SPECIFICATIONS 
Issue 1, June 1984 
FIGURE 2-1. 824 PHOENIX DISPLAY KEYSET 
a I INTERNAL SPEAKER 
a 2 16 CHARACTER DISPLAY 
a 24 DIRECT STATION SELECT/ 
3 
BUSY LAMP FIELD KEYS 
a 4 VOICE VOLUME CONTROL a 5 pUSHBUTTON KEYPAO 
a 6 HANDSFREE ANSWERBACK MICROPHONE 
a 7 10 SPECIAL FEATURE KEYS 
a 6 8 C.O. LINE KEYS 
n 9 RECEIVER VOLUME CONTROL 
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							INTER-TEL PRACTICES 
824 INSTALLATION h MAI?ilT3==CE SYSTEM SPECIFICATIONS 
Issue 1, June 1984 
FIGURE 2-2. 824 HITEC DISPLAY KEYSET 
n 1 24 DIRECT STATION SELECT/ 
BUSY LAMP FIELD KEYS RECEIVER VOLUME CONTROL 
16 CHARACTER DISPLAY IO SPECIAL FEATURE KEYS 
8 CO. LINE KEYS HANDSFREE ANSWERBACK 
MICROPHONE 
VOICE VOLUME CONTROL PUSHEIUTTON KEYPAD 
INTERNAL SPEAKER 
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							INTER-TEL PRACTICES 
824 INSTALLATION & MAINTENANCE SYSTEM SPECIFICATIONS 
Issue 1, June 1984 
FIGURE 2-3. 824 PHOENIX STANDARD IUZYSEZI! 
PUSHBUTTON KEYPAD 
n 3 HANDSFREE ANSWERBACK 
MICROPHONE 
A 04 OIRECT STATION n 
7 SPECIAL FEANRE KEYS -...--. /2 .%LECT KEY3 /‘ 
A A 
- -ys 
‘. 
/ 3 VOICE VOLUME CONTROL /7 C.O. LINE KE 
RECEIVER VOLUME CONTROL INTERNAL SP EAKER 
. 
Page 2-14  
						

							INTER-TEL PRACTICES 
824 1NSTEU;LATION & MAINTENANCE SYSTEM SPECIFICATIONS 
Issue 1, June 1984 
FIGURE 2-4. 824 HITEC STANDARD KEYSET 
-I-. ,._ . . .z-..-. .I. 
A I 
A 
2 
A 3 24 DIRECT STATION 
SELECT KEYS A s PUSHBUTTON KEYPAD 
. . 
. . 
VOICE VOLUME CONTROL INTERNAL SPEAKER 
.- _, , 
._ 
RECEIVER VOLUME CONTROL 7 SPECIAL FEATURE KEYS 
HANDSFREE ANSWERBACK 
MICROPHONE 6 C.O. LINE KEYS 
Paqe 2-15  
						

							INTER-TEL PRACTICES 
SYSTEM SPECIFICATIONS 
824 INSTALLATION & MAINTENANCE 
Issue 1, 
June 1984 
FIGURE 2-5. 
DOOR-MATE 
. 
. 
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