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VOICE
CHANNEL
P1
TERMINATING
EQUIPMENT
SG
975 Ω
IDLE
M
BUSY
-12 TO
-48 V
- BATT
SB
NOTE: X2, X6 AND X10 ON EAM-1 PIGGYBACK
BOARD IN U.S. POSITION.
X4 AND X9 ON UNIVERSAL VOICE CARD IN U.S.
POSITION.
FIGURE C-3. M-LEAD SIGNALING INTERFACE,
TYPE-III SIGNALING
A
M
GND
B
INT
M
BATT
-12 V
C
INT
PTC
D
BATT
TYPE-III SIGNALING
+
M-LEAD
M-LEAD
SENSOR
OUT
(ISOLATED)
—
X1 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL
A
VOICE CARD
X1 ON VLBRV & CELP CHANNEL MODULE
X4 ON UNIVERSAL VOICE II/CVSD CHANNEL MODULE
X4 ON VOICE II/PCM & ADPCM CHANNEL MODULES
X2 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL
B
VOICE CARD
X2 ON VLBRV & CELP CHANNEL MODULE
X5 ON VOICE II/CVSD CHANNEL MODULE
X3 ON VOICE II/PCM & ADPCM CHANNEL MODULES
X3 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL
C
VOICE CARD
X3 ON VLBRV & CELP CHANNEL MODULE
X6 ON VOICE II/CVSD CHANNEL MODULE
X5 ON VOICE II/PCM & ADPCM CHANNEL MODULES
APPENDIX C
C-3
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