NEC Neax 2400 Ipx System Operations And Maintenance Manual
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NDA-24307 CHAPTER 6 Page 453 Issue 1 SYSTEM OPERATIONS 1.3 Alarm Indications on TOPU The system has alarm lamps on the TOPU as shown in Figure 6-3. Ta b l e 6 - 1 lists the meaning of each lamp. Figure 6-3 Alarm Indications on TOPU Table 6-1 Description of Alarm Indications on TOPU LAMP COLOR FUNCTION CONTENTS PWR ON Green Power ON Indication Lights when the power is turned ON to the LPM (EMA card mounted) ALM MJ Red Alarm urgency level indicating lamps for each IMG/ISWThe kind of lamp indications are programmable by variable alarm indication. Refer to Section 1.4, Variable Alarm Indication. ALM MN Red ALM SUP Yellow SMJ Red Alarm urgency level indicating lamps for IMG0 of LN/ISWLN: Lights when any abnormal state is detected within the node. ISW: Lights when any abnormal state is detected with ISW. SMN Red S MN P WR S MJ O NM JM NSU P A LM NE CN E A X 2400 IP XPWR ONMJMNSUP ALM SY ST E M
CHAPTER 6 NDA-24307 Page 454 Issue 1 SYSTEM OPERATIONS 1.4 Variable Alarm Indication This feature allows PBX users to make a flexible change of system message output grades which range 0 to 3 and alarm lamp grades which consist of MJ, MN, SUP and NONE. Thus, the PBX users can give a proper alarm grade to each system message according to their requirements. When assigning no data, the default alarm grades are automatically adopted. COMMAND COMMAND FULL NAME ALMGAssignment of Alarm Grade Data
NDA-24307 CHAPTER 6 Page 455 Issue 1 SYSTEM OPERATIONS 2. COLLECTION OF SYSTEM MESSAGES System messages are collected in the following ways: Automatic printout to the system message dedicated printer Automatic printout to the MAT printer Printout by DFTD command 2.1 Automatic Printout to System Message Dedicated Printer Figure 6-4 shows the operating procedure. Figure 6-4 Automatic Printout to System Message Dedicated Printer Operating Procedure 2.2 Display on MAT Set Scanning to Scanning ON (default) on the Scanning PBX form to collect system messages. If any message is collected, the information is displayed in the text box on the DFTD command form. COMMAND COMMAND FULL NAME MBSMMake Busy of System Message Printout Power ON to printer. Automatic Printout Status Is printout stopped temporarily?If a message is registered, the contents will Set printer port to Make-Busy status using MBSM command. YES NOprint out.
CHAPTER 6 NDA-24307 Page 456 Issue 1 SYSTEM OPERATIONS 3. INDICATION OF LOCKOUT STATIONS When a station is in lockout status (permanent signaling state, shorting across speech wires, etc.), it can quickly be discovered, preventing the situation from developing into serious trouble. 3.1 Indicating Method By entering the following commands from the MAT, information pertaining to the lockout station con- cerned will display. 3.2 Recovery Procedure Figure 6-5 Recovery Procedure From Lockout Station (1/2) COMMAND COMMAND FULL NAME DLSLDisplay of Lockout Station - LENS DLSSDisplay of Lockout Station - Number Confirm the state of the handset of the displayed station. On the MDF, connect the test telephone to the displayed station and confirm Dial Tone (DT). Hear DT? AThe in-house wiring (from the MDF to the lockout station) is shorting. Check the wiring. Go on-hook and then go off-hook again. LOCKOUT STATION SEPARATINGMDFPBX TEST TEL. If dial tone is heard, the station is in permanent signaling status. YES NO
NDA-24307 CHAPTER 6 Page 457 Issue 1 SYSTEM OPERATIONS Figure 6-5 Recovery Procedure From Lockout Station (2/2) COMMAND COMMAND FULL NAME RLSTRelease Station/Trunk A RLST command (Confirm: DT) Hear DT? Replace 16LC card with a spare.The circuit may be faulty temporarily. Observe situation for a while. Forcibly release the lockout station circuit. Go off-hook again and confirm DT. YES NO
CHAPTER 6 NDA-24307 Page 458 Issue 1 SYSTEM OPERATIONS 4. LINE LOAD CONTROL In the PBX, Line Load Control can be activated automatically or manually as a countermeasure against abnormal traffic congestion. In the case of automatic control, the system automatically monitors an overloaded situation and restricts outgoing calls from stations and incoming calls from trunks. In the case of manual control, the operator at an Attendant/Desk Console or the MAT restricts outgoing calls from stations and incoming calls from trunks. This section covers the following methods to activate Line Load Control: Control by dialing an access code from the ATTCON/DESKCON Control by entering command data from the MAT System Automatic Monitoring 4.1 Operating Procedure (1) Key operations on the Attendant Console (ATTCON) By the operations on the ATTCON, restriction is effected on an outgoing call from a station having SFC in which the SFI = 16 (Line Load Control) of ASFC command is set as RES=0 (incoming calls to that station are allowed). For restricting incoming calls from a trunk, system data ASYD, SYS1, INDEX59, b0=1 should be assigned. Setting Figure 6-6 Line Load Control Operations on ATTCON—Setting Press LOOP key. Press CANCEL key.Lamp (Figure 6-8) on control panel lights. System message [6-C] displays. (SST) Dial the access code for setting Line Load Control.
NDA-24307 CHAPTER 6 Page 459 Issue 1 SYSTEM OPERATIONS Cancelling Figure 6-7 Line Load Control Operations on ATTCON—Cancelling Figure 6-8 Line Control Indication (ATTCON) Press LOOP key. Press CANCEL key.Lamp (Figure 6-8) on control panel lights. System message [6-D] displays. (SST) Dial the access code for cancelling Line Load Control. LAMPNEC
CHAPTER 6 NDA-24307 Page 460 Issue 1 SYSTEM OPERATIONS (2) Key Operations on the Desk Console (DESKCON) By the operations on the Desk Console, restriction is applied on an outgoing call from a station having SFC in which the SFI = 16 (Line Load Control) of ASFC command is set as RES=0 (incoming calls to that station are allowed). For restricting incoming calls from a trunk, system data ASYD, SYS1, INDEX59, b0=1 should be assigned. Setting Figure 6-9 Line Load Control Key Operations on DESKON—Setting Cancelling Figure 6-10 Line Load Control Key Operations on DESKON—Cancelling Press LX (L1-L6) key. Press CANCEL key.LLC displays on DESKCON (Figure 6-11). System message [6-C] displays. (SST) Dial the access code for setting Line Load Control. Press LX (L1-L6) key. Press CANCEL key.LLC displays on desk console (Figure 6-11). System message [6-D] displays. (SST) Dial the access code for cancelling Line Load Control.
NDA-24307 CHAPTER 6 Page 461 Issue 1 SYSTEM OPERATIONS Figure 6-11 Line Load Control Indication (DESKCON) (3) Operations on the MAT By entering ALLC command from the MAT, Line Load Control executes. The station to be controlled and the contents of the Line Load Control executed on the MAT are the same as those in Step (1), Key operations on the Attendant Console (ATTCON). (4) Automatic Setting If the usage rate of the CPU exceeds the system data usage rate, Line Load Control is automatically set. In this case, system message [6-C] displays. The station to be controlled and the contents of the Automatic Line Load Control are the same as those in Step (1), Key operations on the Attendant Console (ATTCON). If the usage rate of the CPU drops below the system data usage rate, the Line Load Control is automati- cally cancelled. In this case, system message [6-D] displays. While the Line Load Control is set, the lamps on the control panel of the ATTCON/DESKCON remain lit. COMMAND COMMAND FULL NAME ALLCAssignment of Line Load Control 1 4 7 *2 5 8 03 6 9 #Line Load indication LLC is displayed on a Desk Console, when Line Load Control starts. LLC Desk Console L1 L2 L3 L4 L5 L6
CHAPTER 6 NDA-24307 Page 462 Issue 1 SYSTEM OPERATIONS 5. IOC LINE MONITOR (1) Functional Outline This function monitors the IOC port status. As a result of the monitoring by this function, the following is executed: When the connection with a port has been disconnected, it is reported by a message. When the connection with a port is set up, it is reported by a message. The port status is stored in the memory and updated continuously. (2) Message Judgment Criteria Message Judgement Criteria are as described in Table 6-2. Table 6-2 Message Judgment Criteria MESSAGE CONTENT Port Normal System data is assigned, and DR signal is ON. Port Abnormal System data is assigned, and DR signal is OFF. Output of Port Disconnected This message is output when Port Abnormal status has lasted for 30 seconds. This message is immediately output if port abnormal occurs after the IOC card is initialized. Output of Port Status Restored This message is output when DR signal is ON for the port about which Output of Port Disconnected message is output.