Mitel SX 200 DIGITAL Pabx Superset 3 Telephone Description Manual

SECTION MITL9109-094-125-NATrunk Types
13.05 The E&M trunk module applies signals to the M lead and moni-
tors the E lead. In the on-hook condition, the Type 1 interface
grounds the M lead; an open presented to the E lead indicates idle, a
grounded E lead indicates an incoming call. In the off-hook condition,
the Type 1 interface applies -48 volts to the M lead; a ground sent to
the E lead indicates an incoming seizure.
Note:As of the date of issue of this Practice, Type 5 E&M signaling
is not approved...

Circuit Card Descriptions
14. MUSIC ON HOLD/PAGING MODULE
Brief Description
14.01 The Music on Hold/Paging module provides an input for music
on hold, a paging output and a relay to switch an external
paging amplifier. The module plugs into the Universal card. The Music
on Hold/Paging module has a power rating of 1.
Major Components
14.02Major components of the Music on Hold/Paging Module include:aaudio filter/amplitude limiter
lMite1 8961 filter/codec
lpaging driver amplifier
lpaging control relay....

SECTION MITL9109-094-125-NAPage 32 

Circuit Card Descriptions
15. DID TRUNK CARDBrief Description15.01 The DID trunk card contains six l-way Direct Inward Dial cir-
cuits. It plugs into the digital peripheral bay. One-Way Direct
inward Dialing (DID) provides for direct access to PABX subscriber
lines from the public telephone network.
15.02 DID trunk cards can be used in any digital peripheral bay high
power (upper) slot. The maximum number of these cards is four
per bay. This provides a maximum of 24 ports per peripheral bay.
15.03 The...

SECTION MITL9109-094-125-NAgrounded and Tip is at -48 Volts. There are two types of controlled
address signaling: Delay Dial and Wink Start.
15.08 A Delay Dial signal must start no later than 150 ms after trunk
seizure. It is held until the PABX is ready to receive dialing. The
minimum hold time is 140 ms.
15.09 A Wink Start signal must start at least 100 ms after trunk
seizure. It is sent when the PABX is ready to receive dialing and,
can be held a maximum of 290 ms.
15.10 Where the CO does not provide...

Circuit Card Descriptions
16. LWGS TRUNK CARD
Brief Description
16.01 The Loop Start/Ground Start trunk card mounts in any digital
bay and interfaces six trunk circuits to the system. The card is
158 mm high x 368 mm long (6.2 in. x 14.5 in.). Figure 16-1 illustrates
the card and the 
LUGS jumper.
Facilities
16.02 Facilities provided by the 
LWGS Trunk Card include:
l
Loop Start or Ground Start selectable by jumper
0M and MM signaling leads available
0Trunk activity indicated by LED (one per trunk)...

SECTION MITLSI 09-094-l 25-NA
MARKED END
SHOWN FORLOOP START TRUNK
I
IIII
I
III *IIk
m--------+-------+--------
: *IIII a
IIIIIi *
ITTRUNK’ OTRUNK2II
II
(Figure 16-1 Loop Start/Ground Start Card and Jumper Location
Ic-TRUNK 2
W-TRUNK 3i
YRUNK 4‘&TRUNK 5
I
7684ElRlPage 36 

Circuit Card Descriptions
Operation- Ground Start
16.08 To place an outgoing call, the Trunk card grounds the Ring lead.
The CO responds by grounding the Tip lead. The Trunk then
places a termination across Tip and Ring and ungrounds the Ring lead.
The CO then sends dial tone, indicating that it is ready to receive
dialing.
16.09 The Trunk card recognizes an incoming call when the CO
grounds the Tip lead. The CO may also send ringing voltage.
The Trunk card will respond by placing a termination across...

SECTION MITL9109-094-125-NAPage 38 

Circuit Card Descriptions
17. ONS LINE CARD
WARNING
ANY CONNECTION OF THIS CARD TO AN OFF PREMISE APPLICA-
TION, AN OUT OF PLANT APPLICATION, OR TO ANY OTHER EXPOSED
PLANT APPLICATION MAY RESULT IN A SAFETY HAZARD, AND/OR
DEFECTIVE OPERATION, AND/OR EQUIPMENT DAMAGE.
General Description
17.01 The On-Premises (ONS) Line card interfaces standard subscrib-
er telephone sets to a PABX in the same building. It contains 12
line circuits and plugs into any digital bay.
17.02 The card is 158 mm high x 368 mm...