Mitel SX-200 Documentation page 708

SECTION MITL9105/911 O-096-500-NA
l
Six power fail transfer trunks (SX-100)
l
Twelve power fail transfer trunks (SX-200)
a
Optional reserve power supply
0
The SUPERSET 4 Set
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The SUPERSET 3 Set.
2.02 Maximum Line and Trunk Configuration. The SX-100 and SX-
200 systems each consist of a single cabinet (containing the
switching circuitry and the system power supplies) and a cordless
desk-type Supervisor console equipped with pushbutton dialpad and
control keys. Connections between the equipment cabinet, the console
and the distribution frame are made using connectorized 25-pair ca-
bles.
2.03 Noiseless operation, exceptionally small size and environmental
tolerance allow a wide choice of locations for the equipment.
Maintenance
(. .1-
2.04 The modular design and functional packaging of the systems
permit rapid location and replacement of defective equipment.
Circuit malfunctions are detected by diagnostic routines automatically
initiated by the CPU. These diagnostic routines are detailed in Section
MITL9105/9 11 O-096-350-NA. The use of MITEL Action Procedures
(MAPS) helps to locate the defective circuit card or assembly, in order
to indicate to the service personnel the required field-replaceable unit.
Diagnostic routines and maintenance procedures do not interfere with
users not affected by the malfunction. Because the system employs
only electronic circuits, preventative maintenance is not required.
2.05 System expansion is achieved by the addition of plug-in line
and trunk printed circuit cards. Lines are added-in increments of
eight, CO trunks are added in increments of four and special trunks are
added in increments of two.
Physical Description
2.06 The SX-100 and SX-200 systems' equipment cabinets are of
metal construction, and are shown in Figures 2-2 and 2-3.
2.07 All connections from the cross-connecting terminals to the
system equipment cabinet are made using connectorized ca-
bles. Connections between the cross-connecting terminals, the Su-
pervisor console and external equipment are made in accordance with
accepted practice.
2.08 A reserve power supply and battery charging system are avail-
able as an option. The reserve power supply is designed to
maintain system operation for a minimum of 2 hours in the event of a
primary power failure. These items can be mounted within the SX-200
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