Ericsson LBI-39101A manual Interconnecting The Equipment, Audio Line Input And Output Connections

INTERCONNECTING THE EQUIPMENT LBI-39101

G￿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

LINES

1-4

block's terminals. Shielded cabling is recommended. See Figures 5 and 6 and Tables 5 and 12 for details.

NOTE

Do not over-tighten the screws on the DB-style connectors.

LINE 1 IN HI/+	1
(WHITE/BLUE)
LINE 1 IN LO/-	2
(BLUE)
	3
LINE 2 IN HI/+	4
(WHITE/ORANGE)
LINE 2 IN LO/-	5
(ORANGE)
	6
LINE 3 IN HI/+	7
(WHITE/GREEN)
LINE 3 IN LO/-	8
(GREEN)
	9
LINE 4 IN HI/+	10
(WHITE/BROWN)
LINE 4 IN LO/-	11
(BROWN)
	12
NOTES:
1. VIEWED FROM BACK OF ENHANCED	13
AUDIO ENCLOSURE (FEMALE DB-25)
OR WIRING SIDE OF MATING
CONNECTOR (MALE DB-25).

2.UNLABELED PINS ARE NO CONNECTIONS (N.C.)

3.COLOR CODING INDICATES CABLE 19B804083P2 WIRE COLORS

14	LINE 1 OUT HI/+
	(WHITE/GRAY)
15	LINE 1 OUT LO/-
	(GRAY)
16
17	LINE 2 OUT HI/+
	(RED/BLUE)
18	LINE 2 OUT LO/-
	(BLUE/RED)
19
20	LINE 3 OUT HI/+
	(RED/ORANGE)
21	LINE 3 OUT LO/-
	(ORANGE/RED)
22
23	LINE 4 OUT HI/+
	(RED/GREEN)
24	LINE 4 OUT LO/-
	(GREEN/RED)
25

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 interconnected to a Call Director

15