Mitel Sx 50 Dpabx Instructions Guide

General Description 
Cover 
2.4 The dimensions of the impact-resistant plastic moulded Cover are shown in Figure 
2-5. It weighs 2.94 kg (6.48 lb) and covers and protects the complete SX-50 system. 
Natural convection cools the system through vents on the top and bottom. An integral 
keylock prevents unauthorized access. 
55.2 cm 
(21.7in.) 
- 
CID0020 
. 
Figure 2-5 Cover 
100 2-6 Revision 0 9104-091-lOO-NA issue 5  

Physical Description 
Power Supply 
2.5 
The Power Supply unit (see Figure 2-6) mounts on the left side of the Card Frame. 
It is cooled by natural convection. Figure 2-7 shows the dimensions of the Power 
Supply. The weight of the Power Supply unit is 3.28 kg (7.2 lb). The Power Supply 
provides system power from a 120 Vat commercial power input. The front panel 
is 
equipped with the following: a 3-prong ac power supply input, an ON/OFF switch, a 
5 Amp slow-blow fuse, and two studs. The studs are...

General Description 
I 
. 
0 
30.6 cm 
(12.1 in.) 
0 0 
P 0 
DD0004 
100 2-8 
Figure 2-7 Power Supply Dimensions 
Revision 0 9104-091-l 00-NA Issue 5  

Physical Description 
Control Card 
2.6 The Control Card slides into the Card Frame from the right side, parallel to the wall. It 
plugs directly into the Power Supply unit, forming a backplane for the peripheral 
cards, It contains the following hardware: 
l Central Processing Unit (CPU), _ 
l DX switching matrix (switches voice and data), 
l Digital Signal Processor (tone generation, tone detection and conference circuits), 
l Five DTMF receivers, 
l Timing and control circuits, 
l Watchdog Timer...

General Description 
The Control Card 2 (MCC2) has a six-pin connector, similar to the Night Bell connector, 
on the right:hand side of the card. The Music/Pager/Relay connector allows external 
:usic and paging equipment to be connected directly to the SX-50 DPABX. Pinouts 
;3r the connector are as follows: 
l Pin 6 (closest to the -/-segment display) and Pin 5 connect to a relay contact; 
. Pins 4 and 3 connect to an external paging amplifier; 
l Pin 2 and Pin 1 (closest to J4) connect to a music...

Physical Description 
: CARDCONNECTOR 
(TO PERIPHERAL CARD) 
EDGE CONNECTOR 
(TO POWER SUPPLY) TEST POINTS 
AC NIGHT BELL 
RELAY A 
: RELAYS 
RETURN C 
: RINGING D 
RESET SWITCH 
STATUS SWITCH 
RS-232 PORT 
Ptl (GENERIC 
MODULE CONNECTOR) 
J4 
(ATTENDANT CONSOLE) 
7-SEGMENT 
DISPLAY 
MUSICIPAGEWRELAY 
-CARD EXTRACTOR 
0 0 0 0 0 0 0 
0 . 0 0 
I 
Due lo space limtitions, the grounding bracket IS not shown 
DDC012Rl 
Figure 2-9 Control Card 2 (MCC2) 
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General Description 
36.8 cm 
(14.5 in.) 
0 0 0 
I I 
C 
a 
28all 
(11 in.) 
4.5 cm 
(1.8 in.) 
. . 
IL 
C 
7 
A 
L 
c 
DD0019i 
Figure 
2-10 Control Card Dimensions 
Peripheral Circuit Cards 
2.8 The SX-50 system>7pperts up to 10 peripheral circuit cards. Located on the front 
edge of the circuit card is a 25-pair connector, LED displays and a plastic handle 
which facilitates the removal of the card from the Card Frame. A sample peripheral 
card is shown in Figure 2-10. 
Peripheral Circuit cards are...

Physical Description 
There are seven different types of peripheral cards: 
l On-Premises Stations (ONS) Line Card, 
l Off-Premises Stations (OPS) Line Card, 
l Digital Network Interface Circuit (DNIC) Line Card, 
l Control Over Voice (COV) Line Card, - 
l Loop Start/Ground Start (LS/GS) Trunk Card, 
l Universal Card, and 
l Direct Inward Dial (DID) Trunk Card. _ 
Refer to Table 
2-1, Card and Module Types, for the dimensions and weight of each 
card. 
EDGE 
CONNECTOR 
EDG 2 
POST CONNECTOR 
CABLE TIE...

General Description . 
Table 2-l Card and Module Types 
Card/Module Type Dimensions 
Weight 
Control Card/Control Card 2 1 28 cm X 40 cm (11 in. X 15.7 in.) 
1 1 .O kg (2.2 lb) 
Generic Module 
I I 
22.9 cm X 14.6 cm (9 in. X 5.75 in.) 0.37 kg (1 lb) 
ONS Line Card 
OPS Line Card 22.3 cm X 36.8 cm (8.8 in. X 14.5 in.) 
22.3 cm X 36.8 cm (8.8 in. X 14.5 in.) 0.75 kg (1.65 lb) 
0.75 kg (! .65 It?) 
1 I 
DNIC Line Card 22.3 cm X 36.8 cm (8.8 in. X 14.5 in.) 1 0.75 kg.(l.65 lb) 
COV Line Card 1 22.3 cm X...

Physical Description 
r- 
c 
c 
r 
1 
1 
3 
2.54 cm 
(1 in.) 36.6 cm 
(14.5 in.) 
Figure 2-l 2 Peripheral Card Dimensions 
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