Mitel SX-200 DIGITAL Pabx General Description Manual

							General Description 
DAV 5 \, 
BAY 4-5 
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BAY 4, - 
BAY 2-4 
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Figure 2-5 SX-200@ DIGITAL PABX Peripheral Cabinet 
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							General Description 
2.06 Power Fail Transfer cards are also provided to enable prese- 
lected extensions using DTMF or Rotary sets to access a CO 
trunk in the event of system power failure. 
2.07 Two Maintenance Panels are provided. The Control Cabinet 
Maintenance Panel consists of connections for a test line, a jack 
for a maintenance Attendant Console, a maintenance terminal and 
power fail transfer switches. The test line is connected via Tip, Ring 
and Ground connections or via a standard modular phone jack. The 
Peripheral Cabinet Maintenance Panel is not functional, with the excep- 
tion of the POWER switch, and the PFT POWER SUPPLY, COMMON 
CONTROL and MASTER SWITCH switches. 
Power Supplies 
2.08 System power is derived from four power supplies: two bay 
power supplies, one located in bay 1 and one in bay 2; and two 
rear panel power supplies, one for bay 3, and one for bays 4 and 5. 
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							General Description 
3. SYSTEM REQUIREMENTS 
3.01 The environmental and electrical requirements for the SX-ZOO(R 
PABX are shown in Tables 3-l and 3-2 respectively. 
TABLE 3-l 
SX-200”’ ENVIRONMENTAL REQUIREMENTS 
Height Per Cabinet 96.0 cm 
38.0 inches 
Width Per Cabinet 60.0 cm 23.5 inches 
Depth Per Cabinet 70.0 cm 27.5 inches 
Weight Fully Loaded 231.0 kg 
580.0 pounds 
Operating Temperature 10 to 40” c 50 to 104’ F 
Storage Temperature -20 to 50” c -4 to 122” F 
Relative Humidity (Operating) 20 to 80% 20 to 80% 
(non-condensing) 
Relative Humidity (Storage) 10 to 90% 10 to 90% 
(non-condensing) 
TABLE 3-2 
SX-200@ ELECTRICAL REQUIREMENTS 
AC Input Voltage 102-135 Vat  . 
AC Input Frequency 47-63 Hz 
AC Input Power 125 Watts RMS for each bay 
DC Output Power 100 Watts for each bay 
Reserve Power Uninterruptible Power Supply 
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							General Description 
4. HARDWARE OVERVIEW 
General 
4.01 A block diagram of the SX-2OOe DIGITAL configuration (five 
bays) is shown in Figure 4-1. Figure 4-2 shows a block diagram 
of the SX-200@ DIGITAL 336-port configuration (four digital bays). The 
heart of the system is the Main Controller, a l6-bit microprocessor 
operating at a clock frequency of 8 megatlertz. The Main Controller, 
through its address, data, and control buses, interfaces to a floppy disk 
unit, memory, Direct Memory Access Controller (DMAC), a Digital Sig- 
nal Processor (DSP), a Message Subsystem, a DX Module, and 12 
Digital Peripheral Cards. In the 480-port configuration, three Digital 
Interface Cards (DIC) communicate with Main Control Card via the DX 
module. In the 336-port configuration, the MCC controls Bays 3 and 4 
through their Bay Control Cards. 
Main Control Card 
4.02 The Main Control Card (MCC) is shipped with two plug-in mod- 
ules installed, the Memory Module, and the DX Module, and has 
provisions for accepting one Decryption Module. The MCC measures 
35.8 cm (14.1 inches) long and 32.5 cm (12.8 inches) high. The Memory 
Module measures 26.9 cm (10.6 inches) long and 14.5 cm (5.7 inches) 
high. The DX Module measures 17.8 cm (7.0 inches) long and 13.5 cm 
(5.3 inches) high. 
Floppy Disk Drive 
4.03 All system software and Customer Data is stored on a 5.25-inch 
floppy disk drive. Upon power-up, Call processing and Main- 
tenance routines are downloaded from the disk to the Main Controller 
Memory using Direct Memory Access (DMA). The Main Controller ex- 
ecutes the Maintenance routines and logs all major occurrences to the 
disk, non-volatile random access memory, Main Control Card 
7-segment displays, and the maintenance terminal (if equipped). 
4.04 When the system is functional, the software pertinent to the 
peripheral systems is downloaded from the Main Controller 
Memory to each Peripheral Controller’s Memory. The transfer is ac- 
comptished via the Message Subsystem link, using a single 64 kilobit 
per second channel in each direction, tor each Peripheral Controller 
(Peripheral Control Card or Bay Control Card). 
Message Subsystem 
4.05 The Message Subsystem is used as a communication link be- 
tween the Main Controller and the Peripheral Controllers. Ini- 
tially the Message Subsystem is used to download software from the 
Main Controller memory to the Peripheral Controllers’ memory using 
two channels per peripheral bay (one in each direction). During system 
operation these same 64 kilobit per second channels are used as a 
communication link between the Main and Peripheral Processors. Mes- 
sages are HDLC frames, ensuring error-free operation. 
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							General Description 
BAY 1 AND BAY 2 
I TO/FROM 
PERIPHERAL DEVICES 
BAY 3 
3 DATA LINKS 
I PERIPHERAL 
CONTROL IRQ 
PROCESSSOR 
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:.: 32 SPEECH N 
: :. PATHS T 
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15 0 
VOICE L 
CARDS %FiiER 
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ITOIFROM I CONTROL 
PERIPHERAL DEVICES 1; ’ 1 DATALlNK 
, 1 
PERIPHERAL 
PROCESSOR 
Figure 4-l 8X-200@ DIGITAL PABX 480-Port Configuration Block Diagram 
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							General Description 
BAY 1 AND BAY 2- _ 
KAOlBORlE 
Figure 4-2 SX-200@ DIGITAL PABX 336-Port Configuration Block Diagram 
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							General Description 
Digital Signal Processor (DSP) 
4.06 The system contains one Digital Signal Processor (DSP). The 
DSP is under the control of the .Main Controller and is con- 
figured to provide the following: 
m 1 Dial Tone Detector Channel (used for up to 50 trunks) 
l 18 Channels of Conference (e.g., six 3-party conferences) 
e 8 Channels of Dual Tone Generators. 
DX Module 
4.07 The DX Module includes a dynamic switch capable of assigning 
any one of 512 incoming channels to any one of 512 outgoing 
channels. The incoming channels are grouped into 16 incoming links 
containing 32 channels each. The outgoing channels are grouped into 
16 outgoing links of 32 channels each. The 16 incoming and 16 out- 
going links form a 16 X 16 link matrix. Each channel consists of 64 
kiiobits per second of information. The DX Module is therefore capable 
of handling a total incoming bit stream of 32.768 megabits of informa- 
tion per second. Note that switching occurs at the channel level, in 64 
kbps segments. 
4:08 The DX Module contains two dx arrays: the main DX array, and 
the peripheral DX array. The main array consists of four DX 
integrated circuits to produce the 16 X 16 link matrix mentioned above. 
The peripheral array consists of three DX integrated circuits organized 
to connect the 18 bidirectional links of the peripheral cards to the six 
links required for bays 1 and 2. 
4.09 Each incoming link to the DX Module consists of a single wire 
containing up to 2.048 megabits per second of information (32 
channels X 64 kilobits). 
4.10 The DX Module data links are allocated as follows: 
0 1 link for the Digital Signal Processor (DSP) 
l 1 link for the Message Subsystem 
l 6 links for bays 1 and 2 
e 
4 link for ring reference and dial tone filtering 
e 3 links for analog bay 3 or digital Bay 3 
e 3 links for analog bays 4 and 5 or for digital Bay 4 
l 9 link reserved 
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							General Description 
Bay Control Card 
4.11 The Bay Control Card interfaces the periphe:al cards of Digital 
Bays 3 and 4 to the MCC (one BCC for each Bay). 
Peripheral Control Card 
4.12 The Peripheral Control Card controls ail basic functions of the 
analog Peripheral Cards. The Peripheral Bay controller system 
also handles real time tasks, such as rotary digit collection, tone 
cadencing, signaling on trunks, and monitoring hardware activity via 
the Peripheral Control Bus. All events are reported to the Main Con- 
troller via the Message Subsystem. 
Digital interface Card 
4.13 The Digital interface Card provides an interface between the 
analog signals on the speech paths and the digital PCM links to 
the DX Module. The Digital Interface Card converts analog signals in 
the 300Hz - 3kHz band to PCM signals at 64 kilobits per second. The 
Digital interface Card accepts 32 analog voice inputs to provide a 2.048 
Mbit/s (32 X 64 kb/s) PCM output bit stream to the DX Module. This 
same card also converts a 2.048 Mb/s PCM bit stream from the DX 
Module to 32 analog voice signals, and provides the Message Sub- 
system interface. 
Scanner Card 
4.14 The Scanner Card scans the Analog Peripheral ports to detect 
signals that require processor action. When processor action is 
required, an Interrupt Request (IRQ) is sent to the Peripheral Processor. 
Peripheral Cards 
4.15 SX-200@ DIGITAL PABX has Digital Peripheral Cards, each mea- 
suring 35.8 cm (14.1 inches) long and 15.8 cm (6.2 inches) high, 
which consist of the following: 
e Universal Card. This card can handle various types of modules 
as listed below: 
- Receiver/Relay Module (4 DTMF Receivers and 2 Relays per 
Module) 
- Music On Hold/Pager Module 
- Console Module (console interFaces) 
- E&M Trunk Module. 
Each module is assigned a power rating. The accumulated rat- 
ings of the modules on the universal card cannot exceed a 
value of 10. The ratings of the modules are as follows: 
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							General Description 
- Receiver/Relay Module: 2 
- Music On Hold/Pager Module: 1 
- Console Module: 5 
- E&M Trunk Module: 3 
For example, a Universal Card could be configured with two 
Console Modules (a total power rating of lo), or one Console 
Module, two Receiver/Relay Modules, 
and one Music On 
Hold/Pager Module (5 + 2 + 2 + 1 = ‘lo). 
0 ONS Line Card. There are 12 DTMF/Rotary line circuits per card. 
The card accepts up to three DTMF/Rotary telephone sets per 
line circuit. The ONS line card interfaces the DTMF/rotary tele- 
phone analog input with the system’s digital crosspoint net- 
work. Its purpose, then, is to convert the analog telephone 
signals into the digital format used by the system, and to 
convert the digltal information back into the analog signals 
required by the telephone sets. 
e 
LS/GS Trunk Card. This card accepts up to six loop start or 
ground start trunks (jumper-selectable) and has two message 
registration inputs. 
l Control Over Voice (COV) Line Card. The COV Line card 
interfaces a SUPERSET 3TM set or a SUPERSET qTM set to the 
PABX. Each COV card connects six SUPERSET@ sets to the 
PABX, and can plug into an upper slot of any digital Bay. 
a 
Direct inward Dial (DID) Trunk Card. The DID trunk card 
contains six l-way Direct Inward Dial circuits. It plugs into an 
upper (high power) slot of any digital Bay. The DID trunk allows 
incoming trunk calls to dial directly to an extension within the 
PABX from the public network, without Attendant intervention. 
0 Off-Premise (OPS) Line Card. The OPS line card interfaces the 
PABX to extensions which are part of the system, but are 
located in a different building from the PABX. It contains addi- 
tional protection circuitry to protect the PABX from extraneous 
high voltages or induced currents that may appear on the line 
The OPS line card plugs into an upper (high power) slot of any 
digital Bay. Each OPS card connects with up to six extensions. 
4.16 The Peripheral Cards, each measuring 32.5 cm (13 inches) long 
and 25.0 cm (10.0 inches) high, which can be instalied consist 
of the following: 
0 &-station Line Card. This card accepts up to eight 
DTMF/Rotary telephone sets. 
e 
CO Trunk Card. This card is capable of handling four CO trunks 
(LWGS). 
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							,General Description 
0 SUPERSET” Line Card. This card accepts up to eight SUPERSET 
31M or SUPERSET qTM electronic telephone sets (maximum of 
eight cards per cabinet). A total of 128 SUPERSET@ sets can be 
supported by the system. 
l E & M Trunk Card. This card provides two 2- or 4-wire E & M 
tie trunks. 
l DID/Loop Tie Trunk Card. This card provides two Direct inward 
Dial trunks or loop tie trunks. 
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