NEC Neax 2400 Imx Circuit Card Manual

CHAPTER 2 ND-70182 (E)
Page 76
Revision 4.0
PH-M16/PH-M23
Line Test
PH-M16/PH-M23
Line Test
1. General Function
This circuit card controlled by CPU is used for line test of a subscriber’s line. The circuit card supports to
send Howler Tone to external test equipment, besides the circuit card can detect or send various tones, and
send PB (DTMF) signal for automatic trunk test.
Note:A system cannot send Howler Tone during line test. The number of available lines within the line test/au-
tomatic trunk test...

ND-70182 (E) CHAPTER 2
Page 77
Revision 4.0
PH-M16/PH-M23
Line Test
2. Mounting Location/Condition
The LTST circuit card can be accommodated in the shaded slots (00, 01, 02) as shown below:
Note:IMX: Slot 00, Slot 01, Slot 02.
IMX-U: Slot 01, Slot 02 (Considering PH-M22 MMC)
3. Face Layout of Lamps, Switches, and Connectors
The face layout of lamps, switches, and connectors on this circuit card is shown in Figure 2-31.
Figure 2-31   Face Layout of PH-M16/PH-M23 (LTST) Card
Note:
CRIN is used to connect...

CHAPTER 2 ND-70182 (E)
Page 78
Revision 4.0
PH-M16/PH-M23
Line Test
4. Lamp Indications
5. Switch Settings
 
LAMP NAME COLOR DESCRIPTION
OPE/MBGreen This circuit card is operating in normal mode.
Red This circuit card is Make-busy.
SWITCH 
NAME SWITCH
NOSETTINGSTANDARD
SETTINGMEANING
MBUP Circuit card Make-busy
DOWN Circuit card Make-busy cancel
SW01ON×Setting of a condition of DT detection
(440Hz+350Hz)
2ON×Setting of a condition of RBT detection
(440Hz+480Hz)
3ON Time of PB (DTMF) signal sending...

ND-70182 (E) CHAPTER 2
Page 79
Revision 4.0
PH-M16/PH-M23
Line Test
6. External Interface
Figure 2-32   LT Connector Lead Accommodation
00   01    02    03    04 
PH-M16/PH-M23 PH-M16/PH-M23PH-M16/PH-M23
Circuit Card Backboard Connector
Connector Name
Slot Number
LPM
LPM Backboard
MISCCircuit Card Backboard Connector
MISC CONNECTOR
68PH EXMISC CABLE MISC Connector Accommodation
2627
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21...

CHAPTER 2 ND-70182 (E)
Page 80
Revision 4.0
PH-M16/PH-M23
Line Test
Figure 2-32   Connecting Route Diagram
7. Switch Setting Sheet
SWITCH NAME SWITCH SHAPE REMARKS
MB
SW0
OUTA
OUTATE
INA
INB
TA 1
TB1
TM
RA
RBM
TA
TB
E
BA
LT S T
 TLT
 LC
PBXMDP
ON (MB)
OFF
1ON2345
678 

ND-70182 (E) CHAPTER 2
Page 81
Revision 4.0
PH-PC36
Multiplexer
PH-PC36
Multiplexer
1. General Function
The PH-PC36 (MUX) circuit card is an interface card for mounting line circuits and/or trunks. In between
the CPR and the Port Microprocessor (PM) of the line/trunk circuit, this circuit card provides an interface
for PM control and management by the CPU. Likewise in between the TSW and the line circuit/trunks, this
circuit card provides an interface for multiplexing/de-multiplexing of voice Pulse Code...

CHAPTER 2 ND-70182 (E)
Page 82
Revision 4.0
PH-PC36
Multiplexer
Figure 2-34   Location of PH-PC36 (MUX) Card in the 4 IMG System
TDSW
13
TDSW
03
MUX
MUX
MUX
MUX
PCM HW
PM BUS
PCM HW
PM BUS
PCM HW
PM BUS
PCM HW
PM BUSLine/Trunk PM
Line/Trunk PM
Line/Trunk PM
Line/Trunk PM
IMG 3
TDSW
12
TDSW
02
MUX
MUX
MUX
MUX
PCM HW
PM BUS
PCM HW
PM BUS
PCM HW
PM BUS
PCM HW
PM BUSLine/Trunk PM
Line/Trunk PM
Line/Trunk PM
Line/Trunk PM
IMG 2
TDSW
11
TDSW
01
MUX
MUX
MUX
MUX
PCM HW
PM BUS
PCM HW
PM BUS
PCM HW
PM BUS
PCM HW...

ND-70182 (E) CHAPTER 2
Page 83
Revision 4.0
PH-PC36
Multiplexer
Figure 2-35   Location of PH-PC36 (MUX) Card in the IMX-U System
MUX00
LC/TRK
LC/TRK
LC/TRK
LC/TRK
DLKC0
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
LC/TRK
MUX01
MUX02
MUX03
MUX10
MUX11
MUX12
MUX13
TSW00
TSW10
TSW01
TSW11
TSW02
TSW12
TSW03
TSW13
PLO 0
PLO 0
DLKC1
PLO 1
PLO 1
MUX
MUX
TSW00
TSW01
TSW02
TSW03HSW00
HSW01HSW10
HSW11TSW10
TSW11
TSW12
TSW13
LN
ISW 

CHAPTER 2 ND-70182 (E)
Page 84
Revision 4.0
PH-PC36
Multiplexer
The PCM highway running is illustrated in the figure below. There are sixteen 2Mbps PCM highways
(HW0 - HW15) in the PIM. Each PCM highway runs from a card slot to the MUX circuit card. For instance,
highway number zero (HW0) appears in Slot 04 and also Slot 05, thus the HW0 carries the PCM of the
Group 0, 1, 2 and 3. 
Likewise, the HW6, 7, 14, 15 cover the Groups 24 through 31. However, the time slots of Groups 24 and
25 are exclusively...

ND-70182 (E) CHAPTER 2
Page 85
Revision 4.0
PH-PC36
Multiplexer
2. Mounting Location/Condition
For the 1 IMG system, the PH-PC36 (MUX) card is mounted in the PIM 1, 2, and 3.
For the 4 IMG system, the PH-PC36 (MUX) card is required in all PIMs.
3. Face Layout of Lamps, Switches, and Connectors
The face layout of lamps, switches, and connectors is shown in Figure 2-37.
Figure 2-37   Face Layout of  PH-PC36 (MUX) 00 01 02 03 04 05 06 07 08 09 10 11 12
13 14 15 16 17 18 19 20 21 22 23
PIM
Mounting...