NEC Neax 2400 Ipx System Operations And Maintenance Manual

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(b) Trunk seizure by access code dialing
Special Code is assigned by ASPA command.
CI=N, SRV=SSC, SID-17
C.O. Line No. is assigned by ACOC command.
Press LOOP key or LX (L1-L6) key
(RBT)
Dial “xxxx”
C.O. Line No.
Dial called party number
Press CANCEL key
Called party at the distant
office answers and talks(DT from distant office)
Dial access code
 for designated connection 

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10.3 Bad Call Notification
(1) General
When a station user has trouble because of hearing noise during a call, or has other difficulty having a
normal call, the line involved is recorded as a bad call notification.
The record displays on the MAT screen as system message [6-H], which indicates the recording source
(Station Number), Called Station Number or Trunk Number, etc.
(2) Operating Procedure
SFC of the station user who can perform this...

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11. ROUTINE DIAGNOSIS
For confirming its own servicing status, the system automatically executes self diagnosis every day, and
displays the result of the diagnosis on a system message. By this function, possible causes for trouble can be
discovered in an early stage and possible trouble can be prevented from remaining undetected.
11.1 Related System Data
ASYD, INDEX62 b6, b7 - Routine Diagnosis ACT/STBY Changeover
b7
b6
00 = Every time
0 1 = Once a...

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SYS1, INDEX87, 88 - Routine Diagnosis Start Time: Assign Routine Diagnosis Start Time only in
ISW. Regarding LNs, set indexes to FF so that all nodes simultaneously start/stop Routine Diagnosis.
Note
Start time should be such a time at which the traffic of the office is the lowest.
To stop the routine diagnosis, set FF respectively to INDEX87, 88.
Note:If the data other than FF is assigned in a LN, Routing Diagnosis is independently activated in the...

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INDEX232 b0 — Call Forwarding - All Calls Data Clear
0/1 = No/Yes (This data is valid when SYS1, INDEX232, b6=1)
b1 — Call Forwarding - Busy Line Data Clear
0/1 = No/Yes (This data is valid when SYS1, INDEX232, b6=1)
b3 — Call Forwarding - Don’t Answer Data Clear
0/1 = No/Yes (This data is valid when SYS1, INDEX232, b6=1)
INDEX304 b0 — Individual Speed Calling Data Saving
0/1 = Out/In Service (This data is valid when SYS1, INDEX90, b1=1)
b1 — Call...

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12. SYSTEM CONTROL PROCEDURES
Although the system is remarkably maintenance free, maintenance technicians occasionally may confront a
situation in which they have to manually control the system. This chapter describes system control procedures
focusing on the following four items.
Changeover/Make-busy/Make-busy Cancel of Equipment
Initialization
How to Turn ON/OFF the Whole System
System Start-up
Note:Changeover of equipment is available for...

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This figure shows a system block diagram of ISW, which adopts a dual configuration. As seen in the
figure, ISW has the following terminals for the ACT/STBY changeover of dual system equipment:
CPU:If the ACT/STBY of CPU (ISW) is once changed over, the whole controlling block (including
CPU, ISAGT, LANI in ISW) are also changed over.
IOGT:If the ACT/STBY of IOGT (ISW) is once changed over, the whole switching block within the
system (IOGT, TSW, HSW in...

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This figure shows a system block diagram of  LN,  which adopts a dual configuration. As seen in the
figure, each LN has following terminals for the ACT/STBY changeover of dual system equipment:
CPU : If the ACT/STBY of CPU is once changed over, the whole controlling block in the
same node (including CPU, ISAGT, LANI) and GT in both TSWM0 and TSWM1
are also changed over.
GT (TSWM0) :  If the MBR key is flipped on the active GT (PH-GT09) card in TSWM0,...

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Figure 6-38  System Block Diagram for LN Switching Network (2/2)
   ISAGT-A:  PZ-GT13          ISAGT-B: PZ-GT20             LANI:  PZ-PC19              GT:  PH-GT09             TSW:  PH-SW12
   MUX:  PH-PC36               CLK:  PH-CK18                   EMA:  PH-PC40              IOC:  PH-IO24
LANILANI
GT 0
TSW 00TSW 10TSW 01TSW 11
GT 1
EMAIOC/
MISC
CLK 0
CLK 1
CPR 0
LANILANICPR 1
MISC BUS
TSW I/O BUS
TSW I/O BUS
Line/Trunk PM
IMG 2
PCM HW
PCM HW
PCM...

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To perform the ACT/STBY system changeover, check the lamp indicators shown in Figure 6-39, and
then operate the related key.
Note 1:LED indications cited in Figure 6-39 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 6-39   How to Check the...