NEC Mcu 5000a Multipoint Control Unit Equipment Manual
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NECA 340-4 14- 30 0 Revisio n 2.0 Page 1 o f 2 MCU 5000A Multipoint Control U nit CO P-N07 RCNQ g ¿ n1n2… OK A ¿ 001002OK
Page 2 of 2 NECA 340-414-300 Revision 2.0 COP-N07 MCU 5000A Multipoint Control Unit This page is for your notes.
NECA 340-414-300 Revision 2.0 Page 1 of 2 MCU 5000A Multipoint Control Unit Appendix INS Net Error Reasons Number Display the Reasons (ERROR from Net) Correspondence 1 2 3 6 7 16 17 18 19 21 22 26 27 28 29 30 31Unused number No route to specific relay net No route to terminating Cannot use channel Caller arrives to channel which already setup Normal disconnect Arriving user is busy Arriving user no resource Arriving user calling/no response Reject the transmission Modified terminal number that is terminating member Restore disconnect user who was not selected Terminating terminal is broken Invalid number format (Incorrect number) Reject the facility (no applicable service) Response to status injury Other normal classesNormal, Semi-normal Class 34 35 41 42 43 44 47No possible use line/channel Net problem Temporary problem Access information missing Requested line/channel not available Class of other resource which is not availableClass of unavailable resource 49 50 57 58 63QOS not available Requested facility has not been contracted yet Transmission ability not accepted Transmit ability not available at this point Class of other service or option which are not offeredClass of unavailable service 65 66 69 70 79Specified transmission ability which is not offered Specified type of channel which is not offered Requested facility which is not offered Limited digital information Class of other service or option which are not offeredClass of unoffered service 81 82 83 85 86 88 91 95Invalid calling number in use Invalid channel in use Specify the interruption calling discernment number is unused No interruption calling Restored the specific interruption calling Terminal attribute is mismatched Selected invalid relay net Other invalid message classInvalid message class 96 97 98 100 101 102 111 127Insufficient necessary information request Type of message has not been defined or not been offered Calling status and message is mismatched. Type of message has not been defined. Invalid request contents of information Calling status and message is mismatched Restored by full timer Class of other incorrect order Other interworking classIncorrect Process
Page 2 of 2 NECA 340-414-300 Revision 2.0 Appendix MCU 5000A Multipoint Control Unit 900 901 903 904 905 906 908 909 910 912 913No response from terminating, even after 50 seconds of calling At calling, line (Layer 1) is abnormal At calling, line (Layer 2) is abnormal TEI is mismatched At calling, line (Layer 3) is abnormal When receiving the request of initialization, set up is received from NET, it will be reported to the upper level Time out occurs when standing by for restart response When call or disconnect during standby for restart response Receiving the message which was unsuitable for local status When call or disconnect during standby for restart response Number Display the Reasons (ERROR from Net) Correspondence
NECA 340-414-500 ISSUE 2 DOI-G05187 PART OF STOCK # 0293922 MAINTENANCE MANUAL SEPTEMBER, 1998 NEC America, Inc. MCU 5000A MULTIPOINT CONTROL UNIT
LIABILITY DISCLAIMER NEC America, Inc. reserves the right to change the specifications, functions, or features, at any time, without notice. NEC America, Inc. has prepared this document for use by its em- ployees and customers. The information contained herein is the property of NEC America, Inc. and shall not be reproduced without prior written approval from NEC America, Inc. Copyright 1998 NEC America, Inc. Printed in USA
NECA 340-414-500 Revision 2.0Page i MCU 5000A Multipoint Control Unit Table of Contents Table of Contents INTRODUCTION ................................................................................................. INT-001 CHECK ON POWER SYSTEM .......................................................................... TCP-001 IMPLEMENTATION OF C&I LOOPBACK FUNCTION ..................................... TCP-002 SETTING OF MCU 5000A LOOPBACK POINTS.............................................. TCP-003 EXECUTION OF MCU 5000A LOOP TEST ....................................................... TCP-004 TROUBLESHOOTING OF M CONT UNIT ......................................................... TCP-005 TROUBLESHOOTING OF 1.5M LIF UNIT......................................................... TCP-006 TROUBLESHOOTING OF RS-422 LIF UNIT .................................................... TCP-007 TROUBLESHOOTING OF H0-INF LIF UNIT ..................................................... TCP-008 TROUBLESHOOTING OF EC H221 MUX UNIT ............................................... TCP-009 TROUBLESHOOTING OF PG/SIO UNIT........................................................... TCP-010 TROUBLESHOOTING OF V SW/LSD IF UNIT ................................................. TCP-011 TROUBLESHOOTING OF A CODEC UNIT ...................................................... TCP-012 TROUBLESHOOTING OF A SUM UNIT ........................................................... TCP-013 TROUBLESHOOTING OF VIDEO RELATED FAILURE................................... TCP-014 TROUBLESHOOTING OF AUDIO SYSTEM ..................................................... TCP-015 START-UP OF MCU CONSOLE ........................................................................ TCP-016 REPLACEMENT OF UNIT ................................................................................. TCP-017 REPLACEMENT OF MEMORY CARD BATTERY ............................................ TCP-018 CHECK ON STATE AND KIND OF MEMORY CARD ....................................... TCP-019 COPYING CONTENTS OF MEMORY CARD .................................................... TCP-020 REPLACEMENT OF BACKUP MEMORY BATTERY ....................................... TCP-021 TROUBLESHOOTING OF VDSW UNIT ............................................................ TCP-022
Page iiNECA 340-414-500 Revision 2.0 Table of Contents MCU 5000A Multipoint Control Unit This page is for your notes.
NECA 340-414-500 Revision 2.0 Page 1 of 14 MCU 5000A Multipoint Control Unit INT-001 INTRODUCTION 1. GENERAL 1.01This practice provides maintenance and trouble clearing of Multipoint Control Unit 5000A (MCU 5000A). 2. OVERVIEW 2.01This equipment does not require periodical maintenance under normal operating conditions. However, users are recommended the periodical check described in Section 3, and in case of failure perform troubleshooting in accordance with the descriptions given in this practice. 2.02In case of failure, inform NEC America, Inc. of the following items before starting the troubleshooting (see Section 10, CONTACT FOR FAILURE in this practice). • Operating conditions of the system at the time of failure • Failure conditions • Front panel LED status of each unit • Alarm status displayed on MCU Console • Transmission conditions of video and audio signals 2.03WARNING: BE SURE TO TURN THE POWER SWITCH OFF BEFORE STARTING SUCH MAINTENANCE AND ADJUSTMENT OPERATIONS AS THE EXTERNAL CONNECTIONS AND UNIT INSERTION PULLOUT FOR STRAP CHANGE INSIDE THE UNIT. MAINTENANCE AND ADJUSTMENT OPERATIONS UNDER THE POWER-UP CONDITION MIGHT CAUSE THE FAILURE AND DEGRADATION OF COMPONENTS INSIDE THE EQUIPMENT, SO OBSERVE THE RULE OF POWER-OFF. The memory card mounted on the M CONT unit can be inserted/pulled out under the power-up condition except when the memory card access lamp (RC6) is lit.
Page 2 o f 14 NECA 340 -41 4-5 00 Revisi on 2.0 INT-001 MCU 5000A Mult ipoint Con trol Unit 3. PERIODICAL CHECK