NEC Neax 2400 Ipx System Operations And Maintenance Manual
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NDA-24307 CHAPTER 6 Page 523 Issue 1 SYSTEM OPERATIONS To perform the ACT/STBY system changeover, check the lamp indicators shown in Figure 6-40, and then operate the related key. Note 1:LED indications cited in Figure 6-40 are only an example. The indicating pattern (ON/Flash/OFF) can differ, depending on each system setting. Note 2:STATUS 7-seg. LED provides information on ACT/STBY status of the belonging CPU. For details on the LED’s checking method, refer Figure 6-44. Figure 6-40 How to Check the LEDs and SW Keys for System Changeover (IMG0) 13 14MUX ACTMUX(PH-PC36) MUX(PH-PC36) 13 14MUX ACTMUX(PH-PC36) MUX(PH-PC36) 13 14MUX ACTMUX(PH-PC36) MUX(PH-PC36) MUX ACTMUX(PH-PC36) MUX(PH-PC36) 13 14 TOPU PIM3 PIM2 PIM1 PIM0 LPM BASEUFANU FRONT VIEW : Lamp is ON : Lamp is OFF: Lamp is Flashing Legend CPU 0 -> ACT TSW 0 -> ACT System State IMG0 MUX FRONT MUX ACT MB 0304 IOC(PH-IO24) EMA (PH-PC49) OPE ..... ..... ..... ..... DSP 0 (PZ-DK224) DSP 1 (PZ-DK224) OPE/MB12 34 567 8 OFF12 34 OFF 12 34 567 8 OFF 12 34 567 8 OFF12 34 OFF 12 34 567 8 OFF 4C026AE 4C026AEIMG1 IMG2 IMG3 STATUS Note 2 CPUOPE WDT IMG0 12 34 567 8 OFF 12 34 OFF 12 34 567 8 OFF MBR 4C026AE PZ-DK224 FRONT
CHAPTER 6 NDA-24307 Page 524 Issue 1 SYSTEM OPERATIONS To perform ACT/STBY system changeover, check the lamp indicators shown in Figure 6-41, and then operate the related key. Note:LED indications cited in Figure 6-41 are only an example. The indicating pattern (ON/Flash/OFF) can differ, depending on each system setting. Figure 6-41 How to Check the LEDs and SW Keys for System Changeover (IMG1) 13 14 MUX(PH-PC36) MUX(PH-PC36) 13 14 MUX(PH-PC36) MUX(PH-PC36) 13 14 MUX(PH-PC36) MUX(PH-PC36) MUX(PH-PC36) MUX(PH-PC36) 13 14 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 DLKC (PH-PC20) DLKC (PH-PC20) GT (PH-GT09) TSW 00 (PH-SW12) TSW 01 (PH-SW12) TSW 02 (PH-SW12) TSW 03 (PH-SW12) TSW 10 (PH-SW12) TSW 11 (PH-SW12) TSW 12 (PH-SW12) TSW 13 (PH-SW12) PLO Note 1 PLO Note 1 (RES) GT (PH-GT09) TOPU PIM3 PIM2 PIM1 PIM0 TSWM BASEU FANU FRONT VIEW : Lamp is ON : Lamp is OFF Legend IMG1 System State TSW 0 -> ACT PLO 0 -> ACT DLKC 0 -> ACT MUX FRONT MUX ACT MB DLKC FRONT OPE/MB MB PLO FRONT TSW FRONT TSW ACT MBTSW MBR GT FRONT OPE/MB MBMBR ACT MB
NDA-24307 CHAPTER 6 Page 525 Issue 1 SYSTEM OPERATIONS To perform the ACT/STBY system changeover, check the lamp indicators shown in Figure 6-42, and then operate the related key. Note:LED indications cited in Figure 6-42 are only an example. The indicating pattern (ON/Flash/OFF) can differ, depending on each system setting. Figure 6-42 How to Check LEDs and SW Keys for System Changeover (IMG2) 13 14 MUX(PH-PC36) MUX(PH-PC36) 13 14 MUX(PH-PC36) MUX(PH-PC36) 13 14 MUX(PH-PC36) MUX(PH-PC36) MUX(PH-PC36) MUX(PH-PC36) 13 14 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 GT (PH-GT09) TSW 00 (PH-SW12) TSW 01 (PH-SW12) TSW 02 (PH-SW12) TSW 03 (PH-SW12) TSW 10 (PH-SW12) TSW 11 (PH-SW12) TSW 12 (PH-SW12) TSW 13 (PH-SW12) CLK (PH-CK18) CLK (PH-CK18)(RES) GT (PH-GT09) TOPU PIM3 PIM2 PIM1 PIM0 TSWM1 BASEU FANU FRONT VIEW : Lamp is ON : Lamp is OFF Legend IMG2 System State TSW 0 -> ACT CLK 0 -> ACT MUX FRONT MUX ACT MB CLK FRONT TSW FRONT TSW ACT MBTSW MBR GT FRONT OPE/MB MBMBR OPE MB
CHAPTER 6 NDA-24307 Page 526 Issue 1 SYSTEM OPERATIONS To perform the ACT/STBY system changeover, check the lamp indicators shown in Figure 6-43, and then operate the related key. Note:LED indications cited in Figure 6-43 are only an example. The indicating pattern (ON/Flash/OFF) can differ, depending on each system setting. Figure 6-43 How to Check LEDs and SW Keys for System Changeover (IMG3) 13 14 MUX(PH-PC36) MUX(PH-PC36) 13 14 MUX(PH-PC36) MUX(PH-PC36) 13 14 MUX(PH-PC36) MUX(PH-PC36) MUX(PH-PC36) MUX(PH-PC36) 13 14 TOPU PIM3 PIM2 PIM1 PIM0 DUMMY BASEUFANU FRONT VIEW : Lamp is ON : Lamp is OFF Legend TSW 0 -> ACT System State IMG 3 MUX FRONT MUX ACTMB
NDA-24307 CHAPTER 6 Page 527 Issue 1 SYSTEM OPERATIONS How to check the STATUS 7-seg. LEDs The ACT/STBY status of CPU can be confirmed by viewing the STATUS 7-seg. LEDs. Visually check the LED indications and confirm which CPU is active in your system. When the STATUS LEDs display any of the two-digit numbers (00 - 99), the belonging CPU is active. If the LEDs display the three letters (S, B and Y) in rotation, the CPU system is in STBY mode. Note that the numbers (00 - 99), displayed on the active CPU front panel (DSP), conform to the percentage points showing CPU occupancy rate. Figure 6-44 How to Check STATUS LEDs Legend Lamp is ON :Lamp is OFF: Lamp is Flashing: Active IMG1 IMG2IMG3 CPUOPE STATUSWDTIMG0 12 34 567 8 OFF 12 34 OFF 12 34 567 8 OFF 12 34 567 8 OFF 12 34 OFF 12 34 567 8 OFF MBR STATUS 4C026AE4C026AE ST-BY IMG1 IMG2 IMG3 CPUOPE WDTIMG0 MBR DSP (Front View) DSP (Front View) If the CPU is active, the LEDs here indicate CPU occupancy rate.If the CPU is in ST-BY mode, the left-side LED here goes OFF and the right side beams S, b and y in rotation. Note 1:The figure above shows an example of lamp indications on the DSP mounted in the ISW. Note 2:In addition to the indication of “STATUS” 7-seg. LEDs, the ACT/ST-BY of the CPU also can be confirmed via the “CPU OPE” and “IMGn” lamps. Lamp indications on CPR for the fully expanded system (one ISW and four LNs) are shown below: LED NAMEISW LN (IMG0) ACT STBY ACT STBY CPU OPE Steady-green OFF Steady-green OFF IMG0 Steady-green Flash green Flash green Flash green IMG1 Steady-green OFF Flash green OFF IMG2 Steady-green OFF Flash green OFF IMG3 Steady-green OFF Flash green OFF
CHAPTER 6 NDA-24307 Page 528 Issue 1 SYSTEM OPERATIONS 12.1.2 How to Control CPU Block The ACT/STBY of CPU, when it is provided in a dual configuration, can be switched over by one of the operations shown in Table 6-8. If the system of CPU in the LN is changed over, the ACT/STBY of GT (in TSWM) also changes over. See Figure 6-45. Note 1:While changeover of the CPU is in progress, any call attempt is rejected. Already established calls, however, will not be affected. Note 2:When the forced changeover is executed, the entire system is initialized. For this reason, do not use this operation except in unavoidable circumstances. Note 3:Except in the case of ISW, the CPU mode change (in LN) affects the ACT/STBY of GT (PH-GT09) card. See Figure 6-45. Figure 6-45 shows a system block diagram centering upon the CPU and its controlling GT in a LN. Though the two sides have a complicated cable connection, the controlling route of CPU 0 directly goes to GT 0, and that of CPU 1 to GT 1. Therefore, if the system of CPU is changed over, the ACT/ STBY of GT also changes over (for LN only: IOGT is not changed over in the the case of ISW.) Table 6-8 Changeover of CPU Block TYPE OPERATIONS REMARKS Changeover by CMODI/CMOD Note 1Use the CMODI/CMOD command. See Chapter 8.CPU OPE lamp lights steady green on the DSP of the CPU, which is placed into ACT- mode by this operation. OPE/MB lamp of GT (PH-GT09) card, which is in the controlling route, lights green. Note 3 Changeover by key operation Note 1Turn ON the MBR key on the DSP of the active CPU. After a few seconds, return the MBR key to the previous position. See Section 12.1.3, Manual System Changeover of CPU. Forced Changeover Note 2ACT/STBY mode of CPU can be controlled by CPU SEL key operation on the EMA (PH-PC40) card. UP- No. 0 system (ACT) DOWN- No. 1 system (ACT) Normally, this key must be placed in the center position when the CPU is provided in a dual configuration. See Section 12.1.4, Forced Changeover of CPU. ATTENTIONContents Static Sensitive Handling Precautions Required
NDA-24307 CHAPTER 6
Page 529
Issue 1
SYSTEM OPERATIONS
Figure 6-45 System Block Diagram in LN (Switching Network Between CPU and GT)
ISAGT: PZ-GT13/PZ-GT20 LANI: PZ-PC19 GT : PH-GT09 TSW: PH-SW12 MUX: PH-PC36
DLKC : PH-PC20 PLO : PH-CK16-A/17-A CLK : PH-CK18 EMA: PH-PC40 IOC : PH-IO24
TSW 00TSW 10TSW 01TSW 11TSW 02TSW 12TSW 03TSW 13
DLKC 0
IMG 0/2 IMG 1/3To/From TSW of ISWM
MUXMUXMUXMUXMUXMUXMUXMUXMUXMUXMUXMUXMUXMUXMUXMUX
TSW I/O BUS
TSW I/O BUS
DLKC 1
LANILANI
ISAGT
CPU 0
GT 1
EMAIOC/
MISC CPR 0
LANILANI
ISAGT
CPU 1CPR 1
MISC BUS
GT 0
PLO 1/
CLK 1
PLO 0/
CLK 0As shown below, though an external cable is
physically connected between ISAGT 0 and
GT 1, the actual control signal is sent/
received only between ISAGT 0 and GT 0 via
the backboard bus.
GT 1GT 0
ISAGT0
CPUIOP0
Backboard Backboard Bus
T
External Cable
Note : As for the ISW, although the cable
connection is the same as above, the
control signal is sent from ISAGT0 to
both IOGT0/1.
Note 3Note 3 Note 2
Note 2
Note 1:This figure shows the Switching Network diagram only related to the LNs. For the diagram
regarding the ISW. See Figure 6-37.
Note 2:This card is mounted in TSWM0 only.
Note 3:PLO card is mounted in TSWM0 and CLK card is mounted in TSWM1.
CHAPTER 6 NDA-24307 Page 530 Issue 1 SYSTEM OPERATIONS 12.1.3 Manual System Changeover of CPU To change over the CPU system, the CMODI/CMOD command is normally used. However, if the com- mand cannot be used for some reason, use the key operations listed below: Note:For system changeover via the command, see Chapter 8. Changeover Procedure for CPU of ISW STEP 1 Determine which CPU is active. (1) Check the lamp indications on the CPU Display Panel (DSP). Figure 6-46 CPU in ACT/STBY Mode (ISW) (2) Check the mate CPU’s STBY mode. Improper key operations may result in a system down. Operate the related keys, applying extreme care. WAR NI NG Legend Lamp is ON :Lamp is OFF: Lamp is Flashing: Active IMG1 IMG2 STATUSSTATUS IMG3 CPUOPE WDT IMG0 MBR STBY IMG1 IMG2 IMG3 CPUOPE WDT IMG0 MBR DSP (Front View) 12 34 567 8 OFF 12 34 OFF 12 34 567 8 OFF 12 34 567 8 OFF 12 34 OFF 12 34 567 8 OFF 4C026AE4C026AE The system changeover of CPU can be done only when the mate CPU is in STBY mode. Do not attempt the changeover if the mate CPU is closed.WAR NI NG
NDA-24307 CHAPTER 6 Page 531 Issue 1 SYSTEM OPERATIONS STEP 2 Flip the MBR key on the DSP of the active CPU. Figure 6-47 CPU Changeover via MBR Key (ISW) Note: If the MBR key remains in the UP position, the CPU stays in its make-busy status. Be sure to return the key to the DOWN position except in the case of a special purpose. STEP 3 Confirm the changed lamp indications. To confirm the CPU changeover, check the lamps on both DSPs. LED indications must change as shown when the CPU system has been correctly changed over. Figure 6-48 LED Indications Before and After CPU Changeover (ISW) STEP 4 Analyze the displayed system messages. After STEPs 1 through 3 are performed, the system messages [7-C] and [7-D] automatically display. Confirm that no errors occurred during the CPU changeover process. Note:When the CPU mode change executes, the MAT (TCP/IP) is once disconnected. Then, log in to the system again. After the above steps, set the MBR key as shown below. The system changeover starts automatically. 12 34 567 8 OFF 12 34 567 8 OFF 12 34 OFF 4C026AE 12 DSP (Active) STATUS ATTENTIONContents Static Sensitive Handling Precautions Required CPU Formerly Active After Changeover CPU Formerly in STBY ModeCPU OPE IMG0 IMG1-3 MB/OPE (GT Card) After ChangeoverOFF Flash (green) OFF OFF : Steady-ON (green) : Flash (green) : Flash (green) : Steady-ON (green) CPU OPE IMG0 IMG1-3 MB/OPE (GT Card) Steady-ON (green) Steady-ON (green) Flash (green) Steady-ON (green) : OFF : Flash (green) : OFF : OFF
CHAPTER 6 NDA-24307 Page 532 Issue 1 SYSTEM OPERATIONS Changeover Procedure for CPU of LN STEP 1 Determine which CPU is active. (1) Check the lamp indications on the CPU Display Panel (DSP). Figure 6-49 CPU in ACT/STBY Mode (LN) The CPU changeover also affects the ACT/ST-BY of GT(s) in the TSWM(0/1). Referring to Figure 6-50, check the lamp indications on the GT (PH-GT09) card(s). Figure 6-50 GT in ACT / STBY Mode (LN) Legend Lamp is ON :Lamp is OFF: Lamp is Flashing: Active IMG1 IMG2 STATUSSTATUS IMG3 CPUOPE WDT IMG0 MBR STBY IMG1 IMG2 IMG3 CPUOPE WDT IMG0 MBR DSP (Front View) 12 34 567 8 OFF 12 34 OFF 12 34 567 8 OFF 12 34 567 8 OFF 12 34 OFF 12 34 567 8 OFF 4C026AE4C026AE Note:IMG1 through IMG3 lamp indication may differ depending on the system configuration. MB MBR OPE/MB GT: Active green Legend FRONT VIEW GT (PH-GT09) GT: ST-BY MB MBR OPE/MB Lamp is ON :Lamp is OFF: