Panasonic KX-NS5180X-SX / KX-NS5180XSX Service Manual ▷ View online
9
KX-NS5180X/KX-NS5180SX
5.2.5.
Bell Signal Detection
During on-hook period, transmitting the bell signal to the AC loop in the CR series circuits detects the current by Photo Coupler, and
it determines the presence of a bell signal.
CPU board software performs the operation for recognition and determination of a pattern of bell signals.
it determines the presence of a bell signal.
CPU board software performs the operation for recognition and determination of a pattern of bell signals.
Bell loop path:
1. Ring
L100 R103 PC100 C104 R108 L100 Tip
2. Tip
L100 R108 C104 PC101 R103 L100 Ring
5.2.6.
End-Call Signal Detection
End call is detected by the photo coupler at part of making DC loop. PC100 (PC101) 4-pin is High level during a call.
On the other hand, at end-call, PC100(PC101) 4-pin changes from High to Low level.
PC100(PC101) 4-pin (BELLDET/REVDET) is connected to DSP (IC101), and CPU will monitor this signal via DSP (IC101) and
detects end call.
On the other hand, at end-call, PC100(PC101) 4-pin changes from High to Low level.
PC100(PC101) 4-pin (BELLDET/REVDET) is connected to DSP (IC101), and CPU will monitor this signal via DSP (IC101) and
detects end call.
BELL DET
REVDET
BELLDET (To DSP(IC101))
REVDET (To DSP(IC101))
+
-
-
-
+
-
+
-
REVDET[0]
VIN[0]
VOUT[0]
SHNT[0]
SHNT[0]
DP[0]
PC103A
1
2
3
4
R126A
SA100A
1
2
3
AL2
R103A
C110A
R112A
R115A
RL100A
NC
1
2
2
3
4
R102A
DG
DG
C104A
PC101A
1
2
3
4
C111A
R118A
DG
C109A
ZNR100A
+3.3V
+3.3V
R101A
+3.3V
RL101A
1
3
4
DG
DG
C112A
R106A
D104A
1
3
4
2
R117A
R125A
C113A
D109A
1
3
2
DG
SFG
R116A
D101A
+3.3V
PC100A
1
2
4
3
FG
VH1
VH1
C103A
R109A
D103A
VH1
R110A
+15V
+3.3V
TH100A
C105A
D110A
SFG
C102A
R121A
T100A
3
1
4
5
6
5
6
+3.3V
R108A
R171A
+3.3V
L100A
1
4
2
3
C138A
C139A
J100A
R122A
R124A
IC100A
4
VEE
8
VCC
Q100A
R113A
IC100A
3
2
1
IC100A
5
6
7
C107A C145A
C106A
R119A
R120A
R123A
R127A
R132A
R133A
C108A
C121A
C120A
A
BELLDET (To DSP(IC101))
REVDET (To DSP(IC101))
+
-
-
-
+
-
+
-
REVDET[0]
VIN[0]
VOUT[0]
SHNT[0]
SHNT[0]
DP[0]
PC103A
1
2
3
4
R126A
SA100A
1
2
3
AL2
R103A
C110A
R112A
R115A
RL100A
NC
1
2
2
3
4
R102A
DG
DG
C104A
PC101A
1
2
3
4
C111A
R118A
DG
C109A
ZNR100A
+3.3V
+3.3V
R101A
+3.3V
RL101A
1
3
4
DG
DG
C112A
R106A
D104A
1
3
4
2
R117A
R125A
C113A
D109A
1
3
2
DG
SFG
R116A
D101A
+3.3V
PC100A
1
2
4
3
FG
VH1
VH1
C103A
R109A
D103A
VH1
R110A
+15V
+3.3V
TH100A
C105A
D110A
SFG
C102A
R121A
T100A
3
1
4
5
6
5
6
+3.3V
R108A
R171A
+3.3V
L100A
1
4
2
3
C138A
C139A
J100A
R122A
R124A
IC100A
4
VEE
8
VCC
Q100A
R113A
IC100A
3
2
1
IC100A
5
6
7
C107A C145A
C106A
R119A
R120A
R123A
R127A
R132A
R133A
C108A
C121A
C120A
A
10
KX-NS5180X/KX-NS5180SX
5.2.7.
Polarity Reversal Detection
Configured by the photo couplers (PC100/101) that enable to detect each current in Tip
Ring, Ring Tip direction. PC101 is
used in common as the bell detection photo coupler. Using software, it stores the current direction (the detected photo coupler) at
acquiring ilne and recognizes the action by changing of the current direction (the detected photo coupler changes).
acquiring ilne and recognizes the action by changing of the current direction (the detected photo coupler changes).
When the current flows in the direction of Ring to Tip, PC100 4-pin (BELLDET) is Low and PC101 4-pin (REVDET) is High.
1. Ring
L100 R103 PC100 D104 Q100(C-E) R112 D104 RL101 L100 Tip
When the current direction (polarity) is reversed from Tip to Ring, PC100 4-pin (BELLDET) is High and PC101 4-pin (REVDET)
turns to Low level. It recognizes the action by changing of the current direction (the detected photo cpupler changes).
turns to Low level. It recognizes the action by changing of the current direction (the detected photo cpupler changes).
2. Tip
L100 RL101 D104 R112 Q100(C-E) D104 PC101 R103 L100 Ring
Pattern 1
BELL
DET
REV DET
Pattern 2
BELL
DET
REV DET
OFF HOOK
REVERSE
OFF HOOK
REVERSE
BELLDET (To DSP(IC101))
REVDET (To DSP(IC101))
+
-
-
-
+
-
+
-
REVDET[0]
VIN[0]
VOUT[0]
SHNT[0]
SHNT[0]
DP[0]
PC103A
1
2
3
4
R126A
SA100A
1
2
3
AL2
R103A
C110A
R112A
R115A
RL100A
NC
1
2
2
3
4
R102A
DG
DG
C104A
PC101A
1
2
3
4
C111A
R118A
DG
C109A
ZNR100A
+3.3V
+3.3V
R101A
+3.3V
RL101A
1
3
4
DG
DG
C112A
R106A
D104A
1
3
4
2
R117A
R125A
C113A
D109A
1
3
2
DG
SFG
R116A
D101A
+3.3V
PC100A
1
2
4
3
FG
VH1
VH1
C103A
R109A
D103A
VH1
R110A
+15V
+3.3V
TH100A
C105A
D110A
SFG
C102A
R121A
T100A
3
1
4
5
6
5
6
+3.3V
R108A
R171A
+3.3V
L100A
1
4
2
3
C138A
C139A
J100A
R122A
R124A
IC100A
4
VEE
8
VCC
Q100A
R113A
IC100A
3
2
1
IC100A
5
6
7
C107A C145A
C106A
R119A
R120A
R123A
R127A
R132A
R133A
C108A
C121A
C120A
A
11
KX-NS5180X/KX-NS5180SX
5.2.8.
2W-4W Conversion
This circuit converts 4W-voice signal inside PBX and 2W-voice signal. It is configured by Op-Amp and BN (Balance Network) in
CODEC.
CODEC.
5.2.9.
DSP Interface
DSP is controlled by CPU on the CPU board via command / status register interfaces.
5.2.10.
Surge Protection
A gas arrester (SA100) with discharge voltage 230V is mounted between Tip and SFG, Ring and SFG.
And a discharge tube (AL2) with the discharge voltage 1kV is mounted between SFG and FG.
And a discharge tube (AL2) with the discharge voltage 1kV is mounted between SFG and FG.
From DSP(IC101)
To DSP(IC101)
+
-
+
-
VIN[0]
R126A
C110A
DG
C111A
R118A
DG
C109A
C112A
R125A
C113A
D109A
1
3
2
VH1
VH1
VH1
+15V
R121A
T100A
3
1
4
5
6
5
6
+3.3V
C138A
C139A
R122A
R124A
IC100A
4
VEE
8
VCC
IC100A
3
2
1
IC100A
5
6
7
C107A C145A
R119A
R120A
R123A
R127A
R132A
R133A
C108A
C121A
C120A
SA100A
1
2
3
AL2
SFG
FG
TH100A
SFG
C102A
L100A
1
4
2
3
J100A
12
KX-NS5180X/KX-NS5180SX
5.2.11.
Noise Rejection
It rejects the extrinsic noise that comes from the outside line with the coils L100 that are mounted common between Tip and Ring.
And also condenser C102 is mounted between Tip and Ring.
And also condenser C102 is mounted between Tip and Ring.
5.2.12.
CID Detection
CID signal is connected to DSP (IC101A-C) via AC coupling condensers (C100/C101) and detected by DSP (IC101A-C).
Function
Specification
FSK Detection
Compliance Standards
ITU-T V.23 (1200bps)
Bell202 (1200bps)
Bell202 (1200bps)
Alart Signal Detection (2130/2750Hz Dual Tone)
DTMF Detection
(697/770/852/941Hz)/(1209/1336/1477/1633Hz)
Stutter Tone Detection
315Å`640Hz (for USA only)
SA100A
1
2
3
AL2
SFG
FG
TH100A
SFG
C102A
L100A
1
4
2
3
J100A
CID Detection
+
!A
-
!A
+
-
+
-
REVDET[0]
VIN[0]
VOUT[0]
VOUT[0]
BELL[0]
SHNT[0]
SHNT[0]
DP[0]
VOUT[1]
COB_CIDP
COB_CIDN
PC103A
1
2
3
4
C127A
C118B
R126A
C100B
C101A
DG
SA100A
11
2
AL2
R103A
C110A
R112A
DG
R167B
R166A
R115A
RL100A
1
2
3
4
DG
DG
C116B
R102A
D112A
1
3
2
DG
DG
C104A
PC101A
1
2
3
4
C111A
R118A
+3.3V
DG
DG
D111A
1
3
2
C109A
DG
+3.3V
C137A
DG
ZNR100A
+3.3V
+3.3V
R101A
+3.3V
D111B
1
3
2
RL101A
1
2
3
4
DG
DG
DG
DG
DG
C112A
R106A
D104A
1
3
4
2
R117A
R125A
C101B
R167A
C118A
C113A
D109A
1
3
2
R170B
DG
C116A
SFG
R116A
D101A
R131A
R166B
+3.3V
+3.3V
R165B
R168A
D112B
1
3
2
C100A
PC100A
1
23
4
FG
VH1
R169B
VH1
R170A
C103A
R109A
D103A
R130A
HSSPA
DG
R131B
R168B
VH1
R110A
+15V
R165A
+3.3V
C117B
TH100A
C117A
C105A
+3.3V
DG
D110A
SFG
DG
DG
R169A
C102A
DG
R163A
R121A
DG
R130B
T100A
3
1
6
4
5
5
+3.3V
R108A
DG
R171A
+3.3V
L100A
1
4
2
3
C138A
C139A
J100A
R122A
R124A
119
NC4
120
LIN1
121
GNDA/GNDI
122
HSMIN
123
HSMIP
124
VCCA
125
NC5
126
NC6
127
LIN0
128
DCIN0
1
NC1
2
LOUT0
3
HSSPOUTP
4
HSSPOUTN
5
VCCPA
IC100A
4
VEE
8
VCC
Q100A
R113A
IC100A
3
2
1
IC100A
5
6
7
C107A C145A
C106A
R119A
R120A
R123A
R127A
R132A
R133A
C108A
C121A
C120A
A
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