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LBI-39055
TABLE 9 − − RELAY CONNECTIONS
TERMINAL
BLOCK
BOARD
LABELING
RELAY 1
I/O
RELAY 2
I/O
Audio PA #1
RELAY 1
RELAY 2
Audio PA #1
RELAY 1
Audio PA #2
RELAY 2
Audio PA #2
Call Director (if equipped)
As shown in Figure 1, all C3 Maestro-to-Call Director
interconnections at the console are made at the Audio
Tower's I/O Board. Call Director telephone patch also
requires a second Audio PA Board (#2) in the Audio Tower
and a 4-wire balanced line between this board and the
console's CIM within the CEC/IMC. At the CEC/IMC, CIM
audio channel/line four (4) is used for Call Director
interfacing. CD control data interfacing is handled over the
existing RS-232/RS-422 serial control data interface
between the PC and the CEC/IMC. Refer to Figures 1, 7, 8
and 12 for Call Director interconnection details.
Console-to-CEC/IMC Audio Interconnections
All audio in to and out of a C3 Maestro dispatch
console system enters and leaves the console via modular
jacks on the Audio PA Boards. Both Audio PA Boards have
the same "LINE A" and "LINE B" labeling at the modular
jacks. As shown in Table 6, "LINE A" and "LINE B" labels
on the second Audio PA Board (#2) are considered LINE C
and LINE D respectively. Figure 7 shows modular jack
locations. LINE C, if used for a second unselect speaker,
connects to CEC/IMC CIM channel/line 3. Call Director
LINE D connects to CEC/IMC CIM channel/line 4.
NOTE
Refer to LBI-38715 if the C3 Maestro console
system is equipped with "Phase 1" Audio Matrix,
Audio PA, I/O or Backplane Boards. All "Phase 1"
boards have P29/500000xx00x part numbers and
all "Phase 2" boards have P29/772xxxxxxx part
numbers. When using any "Phase 1" board,
external CD interface transformers and other
special modifications are required for Call Director
interfacing.
16
SCREW
ACTIVATION
TERMIN-
METHOD
ALS
upper two
console PTT
lower two
not supported
upper two
<Alt><F9>
lower two
<Alt><F10>
upper two
not supported
lower two
not supported
NOTE
Install a 4-wire balanced line (two pairs) between the
required CEC/IMC Audio Concentrator Card and Audio PA
Board #2 in the Audio Tower. See the prior section entitled
"CEC/IMC
INTERCONNECTIONS"
details on the Audio Concentrator Card pin-outs. Terminate
the Audio PA Board's LINE D with an RJ-11 modular plug.
RJ-11 pin-outs are shown in Table 5. Shielded cable is
recommended.
Table 10 describes the audio signals between the Audio
Tower's Audio PA Board #2 and the CIM within the
CEC/IMC. The descriptions are relative to the Audio Tower.
All audio signals on these 600-ohm pairs have typical levels
of 0 dBm.
Console-to-Call Director Interconnections
Table 11 describes the various signals between the
Audio Tower's I/O Board and the Call Director. The
descriptions are relative to the Audio Tower. All I/O Board
connections are made at the "CALL DIRECTOR" female
DB-9 connector. Figure 12 shows the connector's pin-out.
EQUIPMENT ROOM GROUNDING
Proper grounding techniques should be observed in
order to protect the equipment and service personnel from
lightning and other sources of electrical surges. All consoles
should be connected to properly grounded 3-terminal
outlets. If used, lightning arrestors, UPS equipment, and all
other console-associated equipment should also be properly
grounded.
AC POWER AND UPS EQUIPMENT
All consoles require 120 or 230 Vac (47 to 63 Hz)
power sources. As a minimum, each outlet should be circuit-
breaker protected per local building codes.
UPS protection is optional. Maximum required UPS
wattage rating for a single console system should be based
on the required maximum sums of the Audio Tower (200
watts max.), the PC's computer (per manufacturer's
specifications) and the PC's video display monitor (per
manufacturer's specifications).
for
additional
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