Specifications
LBI-39101
15
❏ If cable 19B804083P2 is used, mate its DB-25 to
the Enhanced Audio Enclosure, route it to the
CEC/IMC, shorten it as required, and punch the
wires to the correct punch block's terminals. Wire
color coding is indicated in Figure 5 and in the
cable's assembly diagram shown at the end of this
manual. Refer to the CEC/IMC customer-specific
system documentation print-outs for CEC/IMC
Audio Concentrator Card pin-outs which map over
to the punch blocks via Telco cables.
❏ If cable 19B804083P2 is not used, fabricate an
equivalent cable, less unnecessary pairs, to
interconnect the required pairs between the
Enhanced Audio Enclosure's "LINES 1-4" DB-25
connector and the appropriate CEC/IMC Audio
Concentrator Card's pins or CEC/IMC punch
block's terminals. Shielded cabling is
recommended. See Figures 5 and 6 and Tables 5
and 12 for details.
Do not over-tighten the screws on the DB-style
connectors.
Figure 5 −− Audio Line Input And Output Connections
At Enhanced Audio Enclosure
Table 5 −− C3 Maestro-To-CEC/IMC Audio Line Requirements
ENHANCED AUDIO ENCLOSURE AND
CEC/IMC IDENTIFICATION (4-Wire)
LINE 1 LINE 2 LINE 3 LINE 4
CONSOLE INPUT OR OUTPUT (2-Wire)
IN OUT IN OUT IN OUT IN OUT
CEC/IMC INPUT OR OUTPUT (2-Wire)
OUT IN OUT IN OUT IN OUT IN
SELECT SPEAKER/HEADSET
X
MICROPHONE
X
UNSELECT SPEAKER 1
XX
UNSELECT SPEAKER 2
XX
UNSELECT SPEAKER 3 *
XX
CALL DIRECTOR PATCH *
XX XX
"X" = 2-wire connection always required
"XX"= 2-wire connection required if console is so equipped
* = Unselect speaker 3 not available if console is equipped with Call Director patch
1
2
14
3
4
5
6
7
8
9
10
11
12
13
15
16
17
18
19
20
21
22
23
24
25
LINE 1 IN HI/+
(WHITE/BLUE)
LINE 1 IN LO/-
(BLUE)
LINE 2 IN HI/+
(WHITE/ORANGE)
LINE 2 IN LO/-
(ORANGE)
LINE 3 IN HI/+
(WHITE/GREEN)
LINE 3 IN LO/-
(GREEN)
LINE 4 IN HI/+
(WHITE/BROWN)
LINE 4 IN LO/-
(BROWN)
LINE 1 OUT HI/+
(WHITE/GRAY)
LINE 1 OUT LO/-
(GRAY)
LINE 2 OUT HI/+
(RED/BLUE)
LINE 2 OUT LO/-
(BLUE/RED)
LINE 3 OUT HI/+
(RED/ORANGE)
LINE 3 OUT LO/-
(ORANGE/RED)
LINE 4 OUT HI/+
(RED/GREEN)
LINE 4 OUT LO/-
(GREEN/RED)
LINES
1-4
NOTES:
1. VIEWED FROM BACK OF ENHANCED
AUDIO ENCLOSURE (FEMALE DB-25)
OR WIRING SIDE OF MATING
CONNECT OR (MALE DB-25).
2. UNLABELED PINS ARE NO
CONNECT IONS (N.C.)
3. COLOR CODING INDICATES CABLE
19B804083P2 WIRE COLORS
NOTE