ICD testing 060519.docVIP

理论部分: 1：画出七号信令图表？ 2：列出至少3种TUP消息？CLF消息后是什么消息？RLG 给出一个IAM消息和ACM消息，问DPC是什么，被叫号码是多少 3. 列出3种2N冗余的单元 : CM M OMU 4. 列出3种N+1冗余的单元 : BSU CCSU CASU 5. 列出2种无冗余的单元 : ET BDCU List three kinds of units that has 2N redundancy. OMU , STU , CHU , IWCU , CM , CCM , VLRU , HLRU , ACU , CMU List three kinds of units that has N+1 redundancy. CCSU , CASU , BSU , PAU , EIRU List three kinds of units that has no redundancy. BDCU , ET , ECU , CNFC 6：根据告警报告填空 告警级别___2__???? 告警单元____BSU-6___ 告警号____2745___ 附加信息___06 C30000 0000 00_____ BJG12_51190 BSU_6 SWITCH 1999-11-25 11:19:03.85 ** ALARM BSU-6 1F138-00 AIF_SS 2745 CELLULAR NETWORK CONFIGURATION ERROR 06 C30000 0000 00 7.了解OSIAS7 ,AFS ,CCS7,ETT00,ETT16,AS7的作用及区别 (1) OSIAS7 : The internal PCM has not been connected to an internal circuit group to which the time slots of the terminal belong. Name of the internal circuit group of the X.25 terminal is OSIAS7. The circuit group OSIAS7 should contain the internal PCMs and time-slots used by digital X.25 channels. The contents of OSIAS7 is updated when then internal PCM is routed with the WUC command. (2) ASF : Functions of the plug-in unit: The multichannel signalling link terminal of the number 7 signalling system (AS7-A) fulfils the various telecommunications protocols of the Nokia network elements. The AS7-A plug-in unit can initialise 16 common channel signalling (CCS) channels, 64 LAPD channels, signalling for 32 PCM circuits or a digital X.25 (8...32 time-slots divided on one or multiple channels). Interface to the serial buses is made using two 32-channel HDLC-controllers. The AS7-A plug-in unit is based on the 486DX5 prosessor. The AS7-A plug-in unit replaces, depending on its application, two to four AS7-U plug-in units. The purpose of the Adapter for Frame Aligner (AFS-S) is to perform supervision of 32 PCM circuits based on the time slots T0. The time slots T0 of the PCM circuits which are