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Abis GSM interface standard defining attributes of the communication between BSC and BTS. e342ÊÇ4343K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 GSM ½Ó¿Ú±ê×¼£º¶¨ÒåBSCÓëBTSÖ®¼äµÄͨѶÊôÐÔ
 jlureK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 AC Alternating Current ½»Á÷µç ¶*&#%kcvmmK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ACB Alarm Collection Board ¸æ¾¯ÊÕ¼¯°å cvmmvckjK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 45%#(K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ACCH Associated Control Channel Ïà¹Ø¿ØÖÆÐŵÀ
 
 ACCU Alternating Current Connection Unit ½»Á÷µç½ÓÏßµ¥Ôª 1fkjhfK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 saf12zK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 A/Dconverter Analog to Digital converter Ä£Êýת»»Æ÷ 8e342ÊÇ4K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 f12zcv5K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 AGCH Access Grant Channel ½ÓÈë×¼ÐíÐŵÀ afd5a4K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Air conditioner (Active cooler) One version of the climate unit.£¨ÓÐÔ´ÀäÈ´Æ÷£©¿Õµ÷É豸 dsaf1K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ckjlureK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 AIS Alarm Indication Signal ¸æ¾¯Ö¸Ê¾ÐźŠ#(_@s4fadsK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 43289Î÷7087K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ALNA Antenna Low Noise Amplifier ÌìÏßµÍÔë·Å´óÆ÷ ÎÒ)$#@32K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 5%#(ô$*@#K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 AM Application Module Ó¦ÓÃÄ£¿é
 289Î÷70874*$K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 AMPS Advanced Mobile Phonesystem ¸ß¼¶Òƶ¯µç»°ÏµÍ³ (ô$*@#(_@s4K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Antenna Diversity ÌìÏß·Ö¼«½ÓÊÕ
 874*$#(*)#$K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Adaptive Equalizatio ÊÊÓ¦ÐÔ¾ùºâ
 ²f12dsfdK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 AO Application Object Ó¦ÓöÔÏó 8e342ÊÇ43432K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Aoc Advice Of Charge ¼Æ·Ñ֪ͨ 1a3dsÒ²f12dK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 oejµÀhK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 APSI Application Platform Services Interface Ó¦ÓÃƽ̨ҵÎñ½Ó¿Ú 9Î÷70874K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 cv545%K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ARAE Antenna Related Auxiliary Equipment ÌìÏßÏà¹Ø¸¨ÖúÉ豸
 
 Architecture Ìåϵ½á¹¹
 afd5a4K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ARFCN Absolute Radio Frequency Channel Number ¾ø¶ÔÎÞÏßµçƵÂÊÐŵÀÊý urewioK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 tre43289Î÷70K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ARU Active Replaceable Unit ÓÐÔ´¿ÉÌæ»»µ¥Ôª 874*$#(*K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 3dsaf1K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ASIC Application Specific Integrated Circuit Ìض¨ÓÃ;¼¯³Éµç· #*($(Ŷ*&K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 )#$@&%#*(ÎÒK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Astra ASIC in the TRU TRUÖеÄÒ»ÖÖÌض¨ÓÃ;¼¯³Éµç· Àh$#$K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Ç434321%K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 AT Alphanumeric Terminal ÎÄ×ÖÊý×ÖÖÕ¶Ë 45%#(ôK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 AUC Authentication Center ¼øȨÖÐÐÄ

Bat Battery µç³Ø  jlurewioK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
   d3s1fdK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BB Battery Box µç³Ø£¨×飩Ïä  s1fadK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
  
 BBS Battery Backup Stand µç³Ø±¸·Ý¼Ü 
 *@#(_@sK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BCC BTS Color Code BTSÉ«Âë  1fads²»21K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 BCH Broadcast Channel ¹ã²¥ÐŵÀ  fds1fadK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #*($(ŶK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BCCH Broadcast Control Channel ¹ã²¥¿ØÖÆÐŵÀ  1354afdK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Downlink only broadcast channel for broadcast of general information at a base station, on a base station basis. 
 
 BDM Battery Distribution Module µç³Ø·ÖÅäÄ£¿é  3a21fd3sK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 The BDM is an IDM with a battery and a local processor.  ierpoejµÀh$#K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 BER Bit Error Rate ±ÈÌØÎó²îÂÊ  *)#$@&%#*(ÎK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 *@#(_@sK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BFU Battery Fuse Unit µç³Ø±£ÏÕµ¥Ôª 
 hfjouierpoeK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BHCA Busy Hour Call Attempt æʱÊÔºô´ÎÊý  1fd3s1fdÖª1K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 1fads²»K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BGW Billing Gateway ¼Æ·Ñ¹Ø¿Ú 
 oejµÀh$K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Bm Denotes a full rate traffic channel ָʾһ¸öÈ«ËÙÂÊ»°ÎñÐŵÀ  13¶«oK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 321%$#(*$#ʲK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BPC Basic Physical Channel »ù´¡ÎïÀíÐŵÀ  v545%#(ÃK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Denotes the air interface transport vehicle formed by repetition of one time slot on  one or more radio frequency channels. *&#%kcvmmvK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 1fadsK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BS Base Station »ùÕ¾  »21fds3a21fK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 BSC Base Station Controller »ùÕ¾¿ØÖÆÆ÷  sfds1K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 GSM network node for control of one or more BTSs. 
 21f3dsafK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BSCSim Base Station Controller Simulator  »ùÕ¾¿ØÖÆÆ÷Ä£ÄâÆ÷  3a21fd3s1fdK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 321%$#(*$#ʲK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BSIC Base Station Identity Code »ùÕ¾Éí·ÝÂë  erpoeK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 %#(ô$*@#(_@K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BSS Base Station SubSystem »ùÕ¾×Óϵͳ  fd5a4f8e3K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 GSM network logical unit comprising one BSC and one or more BTSs.  jhfjouK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 af12zcK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 BTS Base Transceiver Station »ùÕ¾ÊÕ·¢ÐĄ̊  0874*$#(*)#K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 GSM network unit operating on a set of radio frequency channels in one cell.  Burst A portion of digital information, the physical content, that is transferred within the time interval of one time slot.  jlurewioK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 (*$#ÊK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Burst Âö³å A portion of digital information, the physical content, that is transferred within the time interval of one time slot.  21fds3a21fK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Êý×ÖÐÅÏ¢µÄÒ»²¿·Ö£¬ÔÚÒ»¸öʱ϶µÄʱ¼ä¼ä¸ô´«ÊäÎïÀíÄÚÈÝ  f12zcv545%#K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Öª1fkjhfjK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Busy Mode  æģʽ ds²»21fds3aK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
3dsaf12zcv5K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
Cabinet The physical housing of a base station. Ò»¸ö»ùÕ¾µÄÎïÀí»ú¼Ü  ierpoejµÀK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 321%$#(*$#K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CBCH Cell Broadcast Channel СÇø¹ã²¥ÐŵÀ  ¶*&#%kK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 This is a downlink only channel used by the GSM defined SMSCB function.  fd3s1K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 saf12zK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CC Country Code ¹ú¼Ò´úÂë 
 ewioK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CCCH Common Control Channel ¹«¹²¿ØÖÆÐŵÀ  ds3a21fd3sK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Channel combining the following common control channels:  $@&%#*(K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 PCH Paging Channel                 RACH Random Access Channel                   AGCH Access Grant Channel 
 a21fd3sK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CCITT International Telephone and Telegraph Consultative Committee ¹ú¼Êµç»°Óëµç±¨¹ËÎÊίԱ»á  _@s4fadK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 4321%$K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CCU Climate Control Unit Æøºò¿ØÖƵ¥Ôª  s1fdÖª1fkjhfK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 21f3dK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CCS Common Channel Signaling Subsystem ¹²Â·ÐÅÁî×Óϵͳ  21fd3s1K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 (Ŷ*&#K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CDMA Code Division Multiple Access Âë·Ö¶à·½ÓÈë  $(Ŷ*&#%kcvK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 4*$#(*)K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CDR Charging Data Recording ¼Æ·ÑÊý¾Ý¼Ç¼ Call Data Record ºô½ÐÊý¾Ý¼Ç¼ 
 mvckjlK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CDU Combining and Distribution Unit ºÏ³É·ÖƵµ¥Ôª  ²»21fds3aK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 CE Conformite¡ä Europe¡äenne   ads²»21K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Cell СÇø An area of radio coverage identified by the GSM network by means of the cell identity.  4f8e3K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 3s1fdÖª1fkjhK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CF Central Functions Ö÷º¯Êý  ¶«oitre4328K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Channel The common term channel denotes the virtual connection, consisting of physical  and logical channels between BSS and MS, during a call in progress. -> Logical Channel -> Physical Channel  1fdÖª1K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 CFB Call Forwarding On Mobile Subscriber Busy Óöæºôת  sfds1fads²»2K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 d5a4f8e34K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CFU Call Forwarding Unconditional ÎÞÌõ¼þºôת  &#*($(Ŷ*K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 %kcvmmK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Channel Coding ÐŵÀ±àÂë  ($(Ŷ*&#K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 mmvckjluK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Channel Combination  A physical channel on an air interface carries a defined set of logical channels.  45%#(ÃK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ÔÚ¿ÕÆøÖÐЯ´øÒ»×鶨ÒåÁËÂß¼­ÐŵÀµÄÎïÀíÐŵÀ 
 #(*$#ÊK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Channel Decoder ÐŵÀ½âÂëÆ÷  #$#&)*(&#K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 e342ÊK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Channel group A channel group is a group of dedicated logical channels to a specific MS.  3dsÒ²fK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Ò»ÐŵÀ×éÊÇÊÖ»úרÓõÄÒ»×éÂß¼­ÐŵÀ  3221a3dsÒ²f1K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 34321%$#(*$#K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CHS Charging Subsystem ¼Æ·Ñ×Óϵͳ 
 @#(_@s4fadK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CGI Cell Global Identity СÇøÈ«Çòʶ±ðÂë  s1fdÖª1fkjhfK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Ciphering ¼ÓÃÜ  ds13¶«oitreK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ejµÀh$#$#K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CLM Clock Modules ʱÖÓÄ£¿é 
 
 CMD Digital Radio Communication Tester Êý×ÖʽÎÞÏßµçͨѶ²âÊÔÆ÷ 
 
 CME 20 Cellular Mobile Europe Ericsson GSM system  Å·ÖÞ°®Á¢ÐÅGSM·äÎÑÒƶ¯Í¨Ñ¶ÏµÍ³  $#$#&)*(&#K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
  CME 20 Ericsson digital land mobile telecommunication system based on the GSM standards.jlurewioK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CME 201 Ericsson GSM system comprising Ericsson equipment only.  3dsÒ²f12dsK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 CMRU Central Main Replaceable Unit. Main RU. The RBS is physically connected to the Base Station Controller (BSC) via the CMRU. There is only one CMRU in each RBS. ÖÐÑëÖ÷Ìæ»»µ¥Ôª  @3221K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 %kcvmmvckjlK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CMS 40 Cellular Mobile System Ericsson digital land mobile telecommunication system based on the Joint Technical Committee (JTC))*(&#K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
specification for PCS 1900. 
 434321%K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Compr Compressor ѹËõ»ú  @s4fads1K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 CON LAPD concentrator  DÐŵÀÁ´Â·½ÓÈë³ÌÐò¼¯ÖÐÆ÷ 
 LAPD concentration is used to reduce the number of required physical links between the BSC and BTS.  fkjhfjouieK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DÐŵÀÁ´Â·½ÓÈë³ÌÐò¼¯ÖÐÆ÷ ÓÃÀ´¼õÉÙBSCÓëBTSÖ®¼äµÄÎïÀíÁ´½Ó  21%$#(*$#ʲ2K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #(*$#ʲ2K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Config Configuration ÅäÖà kcvmmvckK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #(ô$*K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Co-siting Co-siting is to operate the radio base station in GSM together with the radio base station in Total Access Communication           2zcv5K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 System (TACS) or Nordic Mobile Telephone system (NMT) on the same site by sharing common equipment.  ¶«oitrK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 CPU Central Processing Unit ÖÐÑë´¦ÀíÆ÷  s1fdÖª1fkjhK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 oK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CSA Canadian Standards Association ¼ÓÄôó±ê׼Э»á  ô$*@#(_@s4K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 2zcv545%#(ôK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CSES Consecutive Severely Errored Second    mvckjK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 CSU Channel Service Unit ÐŵÀ·þÎñµ¥Ôª  itre43K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 434321%K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 CU Combining Unit (RU in CDU_D) ºÏ³ÉÆ÷  ds1fads²»2K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 CUG Closed User Group ±ÕºÏÓû§×é 
 
 CW Call Waiting ºô½ÐµÈ´ý (&#*($(Ŷ*K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
2zcv545%#(ôK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
sÒ²f12dsfdsK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
DA Digital Analysis ºÅÂë·ÖÎö 9Î÷70874*K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ads²»21fds3aK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Dannie ASIC in the TRU 
 dsfds1fadK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DB DataBase Êý¾Ý¿â _@s4fads13¶«K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 DC Direct Current Ö±Á÷µç #*(ÎÒ)$#@32K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Ò²f12dsfdsK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DCC Digital Cross Connector Êý×Öʽʮ×ÖÐÎÁ¬½ÓÆ÷
 
 DCCH Dedicated Control Channel רÓÿØÖÆÐŵÀ ckjlurewioK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Dedicated control channels carry signalling data. רÓÿØÖÆÐŵÀЯ´øÐźÅÊý¾Ý ds²»21fdK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #$@&%#*(K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DCE Data Communication Entity Êý¾ÝͨÐÅʵÌå
 
 DCS Digital Communication System International standard for 1800 MHz based on the GSM standard. cv545%#(ôK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Êý¾ÝͨÐÅ×Óϵͳ¡£Îª1800MHzGSMÖƶ¨µÄÊý×ÖͨѶϵͳ¹ú¼Ê±ê×¼ 70874*K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 DDTMA Dual Duplexer Tower Mounted Amplifier This type needs only one combined TX/RX feeder from the BTS to the TMA.
¨C>DTMA ¨C>RTMA ¨C>TMA ¨C>BTS fdÖª1fkK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #$#&)*(K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DIP DIgital Path Êý×ÖͨµÀ #*(ÎÒ)$#@32K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 The name of the function used for supervision of the connected PCM lines.
 
 Dixie ASIC in the TRU  ads²»21fK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 DM Degraded Minute Ͻµ±ßÔµ 89Î÷7K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 DMRU Distributed Main Replaceable Unit. ·Ö²¼Ê½Ö÷Ìæ»»µ¥Ôª 21f3dsaf1K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 If a Main RU is subordinated to the CMRU, it is said to be distributed.   *@#(_@K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ejµÀhK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Downlink Signalling direction, from the system to the MS. ÐźŴ«ÊäµÄ·½Ïò£¬´Óϵͳµ½ÊÖ»ú 321%$#(*$K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 DP Digital Path Êý×Ö·¾¶
 dsaf12zcv5K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DPX Duplexer Ë«¹¤Æ÷
 #%kcvmmvckK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DS1 Digital Signal level 1 (1544 kbit/s) Êý×ÖÐźŲã1 oitre43289K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 DSP Digital Signal Processor Êý×ÖÐźŴ¦ÀíÆ÷
 21fd3s1fdÖªK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DT Data Transcript  Êý¾Ý¸±±¾ fds3a21fd3s1K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ÎÒ)$#@3221aK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DTE Data Terminal Entity Êý¾ÝÖÕ¶ËʵÌå ds3a21fd3s1K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 DTMA Duplex TMA  Ë«¹¤Ëþ·Å e43289Î÷7K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DTMA is similar to the old ALNA except for different characteristics. ¨C>DDTMA ¨C>RTMA ¨C>TMA
 54afd5a4f8eK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DU Distribution Unit (RU in CDU_D) ·ÖƵÆ÷ 221a3dsÒK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 12dsfdsK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Duplex Distance Ë«¹¤¼ä¾à *($(Ŷ*&#%kcK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 af12zcv54K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DX Direct Exchange Ö±½Ó½»»»
 )#$@&%#*(ÎÒK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DXU Distribution Switch Unit ÐźŷÖÅäת»»µ¥Ôª kcvmmvckjK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 5a4f8e342ÊÇK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 DXX Ericsson Cellular Transmission System including NMS °®Á¢ÐÅ·äÎÑ´«Êäϵͳ @3221a3dsK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
s1fdÖª1fkK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
E1 Short for G.703 2048 kbit/s PCM link 
 *$#ʲ21f3K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 E-GSM Extended GSM À©Õ¹GSM $#&)*(&#K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 EACU External Alarm Connection Unit Íⲿ¸æ¾¯Á¬½Óµ¥Ôª
 fd5a4K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ECU Energy Control Unit ÄÜÔ´¿ØÖƵ¥Ôª 54afdK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 kjlurK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ECPOOL »ØÉùÒÖÖÆÆ÷³Ø $@&%#*(ÎÒK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #$@&%#K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 EC1 External Condition Map Class 1 1¼¶ÍⲿÌõ¼þ @#(_@s4fadsK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 EC2 External Condition Map Class 2 2¼¶ÍⲿÌõ¼þ K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 EEPROM Electrically Erasable Programmable Read-Only Memory µç¿É²Á³ýÖ»¶Á´æ´¢Æ÷ 1fads²»21fdK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 )*(&#*($(ŶK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 EFR Speech Coder Enhanced Full Rate Speech Coder ÔöÇ¿ÐÍÈ«ËÙÂÊ»°Òô±àÂëÆ÷ $#$#&)*(&#*(K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 fads13¶«oitK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 EIR Equipment Identity Register É豸¼ø±ð¼Ä´æÆ÷ a21fd3sK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 1a3dsÒ²f12K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 EM Extension Modules À©Õ¹Ä£¿é mvckjlurewioK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 oitre432K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 EMC Electro Magnetic Compatibility µç´Å¼æÈÝÐÔ
 
 EMF ElectroMotive Force µç¶¯ÊÆ
 fdÖª1fkK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ENV Environmental »·¾³ 1fads²K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 221a3dsÒK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ES Errored Second Îó²îƬ Ò)$#@K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 fd5a4f8e3K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ESB External Synchronization Bus  Íâͬ²½×ÜÏß #$#&)*(&#K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 e43289Î÷7087K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ESD ElectroStatic Discharge ·Åµç Àh$#$#K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 lurewK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ESO Ericsson Support Office °®Á¢ÐÅÖ§³Ö°ìÊ´¦ (*$#ʲ21f3dsK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 ETC Exchange Terminal Circuit ½»»»»úÖն˵ç·
 (&#*($(Ŷ*&K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ETSI Å·ÖÞµçÐűê׼Э»á (*)#$@&K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 s4fads1K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 EXT External Íⲿ ($(ŶK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
874*$#(*K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
FACCH Fast Associated Control Channel ¿ìËÙÏà¹Ø¿ØÖÆÐŵÀ
 Main signalling channel in association with a TCH.
 
 Fading Dip Ë¥Â䲨¹È ewioK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 FCC Federal Communications Commission ÃÀ¹úͨÐÅίԱ»á 70874*$K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 FCCH Frequency Correction Channel ƵÂÊУÕýÐŵÀ jlureK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 89Î÷70874*$#K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FCOMB Filter COMBiner Â˲¨ºÏ³ÉÆ÷ re43289K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 FCS Frame Check Sequence ֡УÑéÐòÁÐ
 4*$#(*)#$@K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FCU Fan Control Unit ·çÉÈ¿ØÖÆÆ÷
 $*@#(_@s4fK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FDL Facility Data Link ¼òÒ×Êý¾ÝÁ´Â· $*@#(_K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 fd5a4f8K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FDMA Frequency Division Multiple Access Ƶ·Ö¶à·½ÓÈë 8e342ÊK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 43289Î÷70K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FER Frame Erasure Ratio µôÖ¡ÂÊ
 ads²»K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FIU Fan Interface Unit ·çÉȽӿڵ¥Ôª fdÖª1fkjK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 FMS File Management Subsystem Îļþ¹ÜÀí×Óϵͳ ²f12dsfK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 s²»21fds3K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Frequency Hopping ÌøƵ 2zcv545%#(ÃK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 21f3dsaf12zK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FS Function Specification ¹¦ÄÜ˵Ã÷
 ouierpoK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FSC Field Support Centre ´Å³¡¼¤ÀøÖ§³ÖÖÐÐÄ a3dsÒK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 21fd3s1fdÖK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FU Filter Unit (RU in CDU_D) Â˲¨Æ÷
 wioK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Fud Filter Unit with duplexer (RU in CDU_D) Ë«¹¤Â˲¨Æ÷
 #&)*(&#*K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 FXU Future Expansion Unit Ô¤ÁôÀ©Õ¹µ¥Ôª ds13¶«oitrK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
lurewioK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
G01 MO model for RBS 200.  &)*(&#*($(ÅK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 cvmmvckjK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 G12 MO model for RBS 2000. sÒ²f1K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 21%$#(*$#ÊK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 GMSK Gaussian Minimum Shift Keying ¸ß˹×îСƵÒƼü¿Ø µÀh$#$K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 GPS Global Position System  È«Çò¶¨Î»ÏµÍ³ µÀh$#$#K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 fd5a4K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 GSM Global System for Mobile communications International standard for a TDMA digital mobile communication system. Originally,       GSM was an abbreviation for Group Special Mobile, which is a European mobile lecommunication interest group, established in 1982.  È«ÇòÒƶ¯Í¨ÐÅϵͳ
 221a3dsK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 GSS Group Switching Subsystem Ⱥ½»»»×Óϵͳ 8e342ÊK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 
 GUI Graphical User Interface ͼÐÎÓû§½çÃæ d5a4f8e342K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ

HCOMB Hybrid COMBiner »ìºÏºÏ³ÉÆ÷ 45%#(ôK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ads13¶K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 HDLC High level Data Link Control ¸ß¼¶Êý¾ÝÁ´Â·¿ØÖÆ ´$*@#(K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 HDSL High bit rate Digital Subscriber Line ¸ßËÙÂÊÊý×ÖÓû§Ïß· h$#$#&)*(K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ierpoejµÀK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Heat Exchanger One version of the climate unit É¢ÈÈÆ÷ %#*(ÎÒK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 HEU Heat Exchanger Unit ÈȽ»»»Æ÷ mmvckjluK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 &#*($(Ŷ*&#K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 HLIN High Level IN ¸ßµçƽÊäÈë K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 oitre432K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 HLOUT High Level OUT ¸ßµçƽÊä³ö
 
 HLR HOME LOCATION REGISTER ¹éÊôλÖüĴæÆ÷ s1fdÖK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ÊÇ434321%$#(K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 HMS Heat Management System ÈȹÜÀíϵͳ s²»21fdK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 cv545K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 HSN Hopping Sequence Number ÌøƵÐòÁкÅ
 
 Hum Humidity ÎÂʪ¶È
 Ò)$#@K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 HW Hardware Ó²¼þ
 f12dsfds1fK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 HWU Hardware Unit Ó²¼þµ¥Ôª jhfjouiK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 An HWU consists of one or more SEs. An HWU is a functional unit within the RBS. The HWU is either active (equipped with a processor) or passive (without processor). &%#*(ÎÒ)K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
#$#&)K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
IC Integrated Circuit ¼¯³Éµç· @s4fadsK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #ʲ21f3dsaK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ID Identification Éí·Ýʶ±ð 4*$#(*)#$@&%K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Ò²f12dsfdsK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 IDB Installation DataBase °²×°Êý¾Ý¿â ejµÀh$K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 0874*$#(*K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 IDM Internal Distribution Module ÄÚ²¿·ÖÅäÄ£¿é
 ´$*@#(_@s4faK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 IEC International Electric Commission ¹ú¼Êµç¹¤Î¯Ô±»á
 
 IMEI International Mobile Station Equipment Identity ¹ú¼ÊÒƶ¯Ì¨É豸ʶ±ðÂë )$#@3221K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 IMSI International Mobile Subscriber Identity ¹ú¼ÊÒƶ¯Óû§Éí·Ýʶ±ðÂë
 4afd5a4f8K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 IN Intelligent Networks ÖÇÄÜÍø &%#*(ÎÒK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 54afd5a4f8K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 INIT Initial Ê×д×Öĸ ds²»21fdK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 &#%kcvmmvcK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 INT Internal ÄÚ²¿ 221a3dsÒ²K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 I/O Input/Output (I/O) System ÊäÈë/Êä³öϵͳ fdÖª1fkjhfK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 IR InfraRed ºìÍâÏß
 #(*$#ʲ2K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 IS Interface Switch ½Ó¿Ú¿ª¹Ø *(&#*($(Ŷ*&K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ª1fkjhfjouieK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ISDN Integrated Services Digital Network, ×ۺϷþÎñÊý×ÖÍø
 (&#*($(ÅK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ISP Internet·þÎñÌṩÕß 3289Î÷70874*K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Ã´$*@#(_@K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 IWD InterWork Description ½»»¥ÊôÐÔ
 poejµÀhK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 IWF Interworking Function ½»»¥¹¤×÷¹¦ÄÜ #*($(Ŷ*K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 I1A Internal Fault Map Class 1A 1A¼¶ÄÚ²¿¹ÊÕÏ
 
 I1B Internal Fault Map Class 1B 1B¼¶ÄÚ²¿¹ÊÕÏ #(ô$*@K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 I2A Internal Fault Map Class 2A 2A¼¶ÄÚ²¿¹ÊÕÏ
)#$@&%#*(ÎK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
JTC Joint Technical Committee ÁªºÏ¼¼ÊõίԱ»á oK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
Kc Communication Key ͨÐÅÃÜÔ¿
 @&%#*(ÎÒ)$K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Ki Identity Key Éí·ÝÃÜÔ¿
%#*(ÎÒK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
LA Location Area λÖÃÇø 3a21fd3s1fK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 µÀh$#$#&)*(&K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 LAC Location Area  Code λÖÃÇø´úÂë
 fds3a21K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 LAI Location Area Identity λÖÃÇø±àºÅ ierpoejµÀh$K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 *$#(*)#$@&K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 LAPD Link Access Procedures on D-channel  D ÐŵÀÁ´Â·½ÓÈë³ÌÐò
LAPD is the data link layer (layer 2) protocol used for communication between the BSC and the BTS on the Abis interface.sÒ²f12dK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
Abis layer 2 is sometimes used synonymously with LAPD. f12zcv545K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Î÷708K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 LBO Line Build Out ÏßÔöÒæ
 
 LED Light Emitting Diode ·¢¹â¶þ¼«¹Ü
 3a21fd3s1K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 LLB Line Loop Back »·Ïß±³°å 45%#(ôK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 LNA Low Noise Amplifier µÍÔë·Å´óÆ÷ $(Ŷ*K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Local bus The local bus offers communication ÔÚDXUºÍTRUECUÖ®¼äÌṩͨѶµÄ¾ÖÓò×ÜÏß ouierpoejµÀK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
between a central main RU (DXU) and distributed main RUs (TRU and ECU). ÊÇ4343K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 sÒ²f12K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Local mode When the RU is in RU mode Local it is not prepared for BSC communication.  ±¾µØģʽ
 
 Local/Remote switch Using the Local/Remote switch, an operator orders the RU to enter Local or Remote mode. ±¾µØ/Ô¶¶Ë¿ª¹Ø K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ds1fadsK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Logical Channel A logical channel represents a specified portion of the information carrying capacity of a physical channel.rewioK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
GSM defines two major categories of logical channels: TCHs Traffic CHannels, for speech or user data CCHs Control CHannels, for control signalling. -> Physical Channel -> Channel Combination f8e342ÊÇ43K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 5a4f8e342ÊK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Logical RU A unit which can be referred to, but is not a single physical unit. There are three different kinds of logical RUs:e43289Î÷K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
1. Buses  2. Antennas  3. Environment (ô$*@#(K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ²21f3K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 LOF Loss Of Frame Ö¡ËðºÄ fjouierpoeK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 µÀh$#$#&K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 LOS Loss Of Signal ÐźÅËðºÄ $#$#&)*(K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 LS Linkset Á´Â·¼¯ 289Î÷70874*$K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
321%$#(*$#ʲK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
Magazine A magazine is a reserved space in the cabinet, which may hold one or more RUs.
  4*$#(*)K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Main RU A main replaceable unit is a replaceable unit that contains one or more processors, to which software can be downloaded from the BSC.
 K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MAP Mobile Application Part Òƶ¯Ó¦Óò¿·Ö
 289Î÷K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Mapping Ó³Éä s4fads13¶K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 &%#*(ÎÒ)$#@3K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MAS Maintenance Subsystem ά»¤×Óϵͳ *$#(*)#$@&%#K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 4afd5a4f8e34K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MCC Mobile Country Code ¹ú¼ÒÒƶ¯´úÂë ´$*@#(_K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 $(Ŷ*K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MCS Man-Machine Communication Subsystem ÈË»úͨÐÅ×Óϵͳ
 1354afdK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MHS Modification Handling System Ericsson trouble report database ÐÞÕý´¦Àíϵͳ °®Á¢ÐŹÊÕϱ¨¸æÊý¾Ý¿â ierpoejµÀh$K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 MIN Mobile IN Òƶ¯ÖÇÄÜÍø )#$@&%#*K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 rewioK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MMI Man-Machine Interface ÈË»ú½çÃæ 9Î÷7087K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 µÀh$#$#K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MO Managed Object ¹ÜÀí¶ÔÏó cv545%#(ÃK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MS Mobile Station Òƶ¯Ì¨
 dsÒ²f12dK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MSC Mobile services Switching Centre Òƶ¯·þÎñ½»»»ÖÐÐÄ
GSM network unit for switching, routing and controlling calls to and from the Public Switched Telephone Network                                     (PSTN) and other networks.
 2zcv545%K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MSIN Mobile Subscriber Identification Number Òƶ¯Óû§Ê¶±ðºÅ uierpoejK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 af12zcv545%K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MSISDN Mobile Subscriber ISDN Number Òƶ¯Óû§ISDNºÅ
 ckjlurewioK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MSRN Mobile Station Roaming Number Òƶ¯Ì¨ÂþÓκÅ
 fads13K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 MSTP Mobile Station Test Point Òƶ¯Ì¨²âÊÔµã
 
 MTP Message Transfer Part ÏûÏ¢´«ËͲ¿·Ö
 8e342ÊÇK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Multidrop Two or more RBSs are connected in a chain to the same transmission system. Á½¸ö»ò¸ü¶àµÄ»ùÕ¾±»Á¬½Óµ½Í¬Ò»Ìõ´«ÊäϵͳÉÏ
All the relevant timeslots are dropped out by each RBS. (This function is sometime called cascading.) 3289Î÷K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 @s4fads13¶«K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Multipath Fading ¶à¾¶Ë¥Âä dsÒ²f12dsfK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ

NAS Network Access Server ½ÓÈë·þÎñÆ÷ 3a21fd3s1K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 NDC National Destination Code ¹úÄÚÄ¿µÄÂë
 
 NMC Network Management Center ÍøÂç¹ÜÀíÖÐÐÄ kjhfjouiK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 $#(*)#K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 NMS Ericsson Network Management System in DXX ÔÚDXXÖеİ®Á¢ÐÅÍø¹Üϵͳ ²f12dsfdsK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #@3221a3dsÒ²K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Nominal Power The nominal power is the power level defined when configuring the transceiver. ±ê³Æ¹¦ÂÊ
 ±ê³Æ¹¦ÂÊÊǵ±ÅäÖÃÊÕ·¢Æ÷ʱ¶¨ÒåµÄ¹¦Âʵçƽ 4*$#(*)#$@&K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 NS Network Synchronization Íøͬ²½
 afd5aK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 NSS Network&Switching Subsystem ÍøÂçºÍ½»»»×Óϵͳ
 (*$#ʲ2K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 N terminal Neutral terminal in a AC mains connection. ÔÚ½»Á÷¸ÉÏß½ÓÏßÖеÄÁãÏߣ¨ÖÐÐÔ½ÓÏ߶ˣ© @3221a3dsÒ²K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
mvckjluK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
O&M Operation and Maintenance ²Ù×÷ºÍά»¤sÒ²f12dsfdsK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
General term for activities such as configuration, utilization of channels (frequency bands), cell planning, stemsupervision, hardware and software maintenance, subscriber administration,etc. K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
  1f3dsafK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 OMC Operation and Maintenance Centre ²Ù×÷ºÍά»¤ÖÐÐÄ Àh$#$#&)*(&K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #%kcvmmvckjK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 OML Operation and Maintenance Link Layer 2 communication link for operation and maintenance services on Abis. s²»21fds3a2K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ²Ù×÷ºÍά»¤Á¬½Ó²ã2 erpoejµÀh$#$K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ÷70874*$K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 OMS Operation And Maintenance Subsystem ²Ù×÷ºÍά»¤×Óϵͳ $*@#(_@sK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 jhfjouierpoeK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 OMT Operation and Maintenance Terminal ²Ù×÷ºÍά»¤ÖÕ¶Ë34321%$#(*$#K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
The OMT is a terminal that supports functions for handling the RBS on site. The terminal can be a portable PC. %kcvmK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 $#@3221a3dsK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Operation Operation is the normal, everyday running of the RBS with full functionality. ÔËתÕý³££¬ÈÕ³£»ùÕ¾ÔËÐÐËùÓеĺ¯Êý 12dsfds1fK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 0874*$#(K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 OPI OPerational Instructions ²Ù×÷ÊÖ²á oitreK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 OSI Open System Interconnection ¿ª·Åϵͳ»¥Á¬ Àh$#$#K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 OSS Operation Maintenance Support System ÔËÐÐά»¤Ö§³Öϵͳ

PAGCH Paging And Access Grant Channel Ñ°ºôºÍ½ÓÈë×¼ÐíÐŵÀ
 mvckjlurewK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Paging Message Ñ°ºôÏûÏ¢ uierpoeK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Î÷70874*$#K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 P-GSM Primary GSM
 *$#ʲ21f3dsaK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Passive RU A passive replaceable unit has a very low level of intelligence and is independent of the processor system.
 12zcv5K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Path Loss ·¾¶ËðºÄ 9Î÷70874*K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 PCH Paging CHannel
Downlink only subchannel of CCCH for system paging of MSs. -> CCCH uierpoejµÀK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 PCM Pulse Code Modulation Âö³åµ÷ÖƱàÂë af12zcv545%K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 $#ʲ21f3dsK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 PCS Personal Communication Services ¸öÈËͨÐÅ·þÎñ ²21f3dsaf12K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 PCU Packet Control Unit  ÐÅÏ¢°ü¿ØÖƵ¥Ôª e342ÊÇ43K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 PE terminal Protective Earth terminal in a AC mains connection.  ÔÚ½»Á÷Ö÷¸ÉÏßÖеı£»¤µØ½ÓÏß¶Ë 3¶«oitrK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 tre43289Î÷70K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 PFWD Power Forward Ç°Ïò¹¦ÂÊ f12dsfds1fK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 @&%#*(ÎK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Physical Channel ÎïÀíÐŵÀ An air interface physical channel carries one or more logical channels. A physical channel uses a combination of frequency and time division multiplexing and is defined as a sequence of radio frequency channels and time slots.fads²»21fK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
-> TDMA frame -> Logical channel 0874*$#(*)K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 PIN Personal Identification Number ¸öÈËÉí·ÝºÅÂë #*($(Ŷ*&#%K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 af12zcv545%#K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 PLB Payload Loop Back ÓÐЧ¸ºÔØ»·Â·°å 21fd3s1fK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 PLMN Public Land Mobile Network ¹«ÖÚ½µØÒƶ¯Íø21fds3K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
A network, established and operated by an administration or its licensed operator(s), for the specific purpose of providing land mobile communication services to the public. It provides communication possibilities for mobile users. For comunication between mobile and fixed users, interworking with a fixed network is necessary. «oitre4328K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Plug-In ²å¼þ³ÌÐò/¿É²ðжµÄ ²»21fds3a21K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 PPE Personal Protective Equipment רÓñ£»¤É豸
 1354afK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 PREFL Power Reflected ·´Ïò¹¦ÂÊ ÎÒ)$#@32K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Protocol ЭÒé
 
 PSTN (Public Switched Telephone Network ¹«¹²¿ª¹Øµç»°ÍøÂç f12zcv545%K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 PSU Power Supply Unit µçÔ´µ¥Ôª $(Ŷ*K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 PUK PIN½âËøÂë d3s1fdK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 rpoejµK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 PWU Power Unit µçÔ´µ¥Ôª s1fdÖª1fkjK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ

RA Route Analysis ·ÓÉ·ÖÎö $#$#&)K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Rate Adaptation(RA) ËÙÂÊÊÊÅä
 1f3dsaf12zK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RACH Random Access Channel Ëæ»ú½ÓÈëÐŵÀ#(*$#ʲ2K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
Uplink only subchannel of CCCH for MS request for allocation of a dedicated channel. -> CCCH ´$*@#(_K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 #ʲ21f3dsafK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RAI Remote Alarm Indication Ô¶¶Ë¸æ¾¯Ö¸Ê¾
 fads²»K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RAM Random Access Memory Ëæ»ú´æ´¢Æ÷
 
 Rayleigh Fading ÈðÀûË¥Âä 2zcv54K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RBER Radio Bit Error Ratio ÎÞÏß±ÈÌØÎó²îÂÊ dsaf12zK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 34321%$#K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RBS Radio Base Station ÎÞÏß»ùÕ¾
All equipment forming one or more Ericsson base stations. ->BTS  ioK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 %kcvmmvckjluK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RE Register Function¼Ä´æÆ÷¹¦ÄÜ 5a4f8e342K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 70874*$#(*)K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Remote mode When the RU is in RU mode Remote, a link is established between the BCS and the central main RU.Ô¶¶Ëģʽ #$@&%#*(ÎÒ)$K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 RF Radio Frequency ÉäƵ
 jµÀh$#$K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RFCH Radio Frequency Channel ÉäƵÐŵÀ A radio frequency carrier with its associated bandwidth. 45%#(ô$K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 *$#ʲ21f3dsaK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RFTL Radio Frequency Test Loop ÉäƵ²âÊԻط
 
 RLC Repair Logistic Centre άÐÞÖÐÐÄ $#$#&)*(&#*K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 *)#$@&K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RMP Resource Module Platform ×ÊÔ´Ä£¿éƽ̨ urewioK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 *($(ŶK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Roaming ÂþÓÎ rewioK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Ê²21f3dsaf12K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RP Regional Processors ¾ÖÓò´¦ÀíÆ÷ ds²»21K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 %#*(ÎÒ)K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RPS Regional Processor Subsystem ¾ÖÓò´¦ÀíÆ÷×Óϵͳ wioK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ´$*@#K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 R-state Release state ÊÍ·Å״̬
 74*$#(*K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RTMA Receiver TMA ½ÓÊÕËþ·ÅÇ434321K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
RTMA has no duplexers. It is used for amplification of the RX signal. ¨C>DDTMA ¨C>DTMA ¨C>TMA
 ²f12dK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RU Replaceable Unit ¿ÉÌæ»»µ¥ÔªdsÒ²f1K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
An RU consists of one or more HWUs. An RU may be replaced by another RU of the same type. The RU is the smallest unit that can be handled on site. (Ŷ*&#%kcvmK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 »21fds3K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RX Receiver ½ÓÊÕÆ÷ 4fads13K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 &#*($(Ŷ*K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RXA Receiver antenna branch A ½ÓÊÕÌìÏß֧·A 1f3dsK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 RXB Receiver antenna branch B ½ÓÊÕÌìÏß֧·B »21fds3a2K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 fads²»2K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RXD Receiver Divider ½ÓÊÕÆ÷·ÖƵ #&)*(&#*($(K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 (ô$*@#K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RXDA Receiver Divider Amplifier ½ÓÊÕÆ÷·ÖƵ·Å´ó a21fd3K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 @s4fads13¶«K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RXLEV Measure of signal strength as defined in GSM 05.08:8.1.4
 rewioK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 RXQUAL Measure of signal quality as defined in GSM 05.08:8.2.4 fjouieK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ

SACCH Slow Associated Control Channel ÂýËÙÏà¹Ø¿ØÖÆÐŵÀ $@&%#K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 SCH Synchronization Channel ͬ²½ÐŵÀ f12zcv545K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 SCCP Signalling Connection Control Part ÐÅÁîÁ¬½Ó¿ØÖƲ¿·Ö %#*(ÎÒ)$K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 e342ÊÇ4343K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SCP Service Control Point ÒµÎñ¿ØÖƽڵã wioK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 *$#ʲ21f3dsaK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SDCCH Stand alone Dedicated Control Channel ¶ÀÁ¢×¨ÓÿØÖÆÐŵÀ&)*(&#*($(K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
Main dedicated signalling channel on the air interface, mainly used for call locating and establishment.
 
 SE Supervised Entity  221a3dsK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 dsÒ²f12dK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SES Severely Errored Second 
 1fds3a21fdK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Shadowing ÒõӰЧӦ
 
 Signaling Terminal ÐÅÁîÖÕ¶Ë
 )#$@&%#*(K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SIM Subscriber Identity Module Óû§Ê¶±ðÄ£¿é 1%$#(*K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 SMP Service Management Point ÒµÎñ¹ÜÀí½Úµã *)#$@&%#K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 13¶«oitre432K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SMS Short Message Service (point to point) ¶ÌÐÅ·þÎñ£¨µã¶Ôµã£©
A short message, up to 160 alphanumeric characters long, can be sent to or from an MS (point to point). *(&#*K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 3289Î÷K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SO Service Object ·þÎñ¶ÔÏó
 hfjouierpK:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Speech Coder ÓïÒô±àÂëÆ÷ ejµÀh$#$#&)*K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 &%#*(K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SPM Space Switch Module ¿Õ·ÖÄ£¿é 2zcv545K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 SPS Support Processor Subsystem Ö§³Ö´¦ÀíÆ÷×Óϵͳ
 kjlurewioK:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SS Swedish Standard Èðµä±ê×¼ 2ÊÇ434321K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 &#*($(Ŷ*&#%K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SS7 Signalling Systrm No.7 ÆߺÅÐÅÁîϵͳ
 #(*)#$@K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SSP Service Support Point ÒµÎñÖ§³Ö½Úµã oitreK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 ($(Ŷ*&#%K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 STS Statistic And Traffic Measurement Subsystem ͳ¼ÆºÍ»°Îñ²âÁ¿×Óϵͳ
 3dsaf1K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Sub RU A sub-replaceable unit is always connected to a superior Main RU. This connection is used for example for retrieval of the RU identity. A sub-RU normally does not have a processor. Note that an RU with a processor that is not loadable is classified as a sub-RU. ´$*@#K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
  3¶«oiK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Supplementary Service ¸½¼ÓÒµÎñ
 
 SVS System Voltage Sensor ϵͳµçѹ´«¸ÐÆ÷ kcvmmvcK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 34321%$#(*K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SW Software Èí¼þ h$#$#K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 &%#*(ÎÒ)$#@3K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SWR Standing Wave Ratio פ²¨±È
 545%#(ô$K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 SYNC Synchronous ͬ²½ K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
µÀh$#$K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
T1 Transmission facility for DS1 (1544 kbit/s). Êý×ÖÐźŲã1ÊäµçÏß 43289Î÷70874K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 221a3dsK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TA Timing Advance 1fds3aK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
A signal sent by the BTS to the MS which the MS uses to advance its timing of transmissions to the BTS to compensate for propagation delay. _@s4faK:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
  2zcv5K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TACH Traffic And Associated Channel  ÒµÎñºÍÏà¹ØÐŵÀ 3dsaf12zK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
  s3a21fd3s1K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TACS Total Access Communication System È«½ÓÈëͨÐÅϵͳ (&#*($(Ŷ*&#K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 saf12zcv545%K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TCH Traffic Channel »°ÎñÐŵÀds3a21fd3sK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
The traffic channels carry either encoded speech or user data. 1f3dsK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
  #$#&)*(&#K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TCS Traffic Control Subsystem »°Îñ¿ØÖÆ×Óϵͳ
 
 TDMA Time Division Multiple Access ʱ·Ö¶àÖ··ÃÎÊ
Multiplexing of several channels in a common frequency band. Each channel is assigned a certain time division, a time slot. Ò²f12dsfds1K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Ç434321%K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TDMA frame GSM air interface time frame comprising eight time slots.  Ò»¸öTDMAʱ֡°üº¬8¸öʱ϶ e342ÊÇ4K:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 TDR Time Domain Reflectometer 321%$#K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 fjouierK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TEI Terminal Endpoint Identifier ÖÕ¶ËÉ豸ÖÕµãʶ±ðÂëtre43K:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
TEI is an identification code carried by a LAPD frame as a terminal connection endpoint within a Service Access Point (SAP). zcv545%#(K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 TEMS TEst Mobile Station ²âÊÔÒƶ¯Ì¨£¨²âÊÔÊÖ»ú£© %#*(ÎÒ)$#@3K:JFD()$#_*±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 uierpoeK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TF Timing Function ¼Æʱº¯Êý
 54afd5a4K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TG Transceiver Group ÊÕ·¢ÐÅ×é
 
 Timing bus The timing bus carries air timing information from the timing unit in the DXU to the TRUs. fads²»21fds3K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 sfds1faK:JFD()±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TM Transport Module The Transport module is non-RBS equipment belonging to the transport network.
 
 TMA Tower Mounted Amplifier °²×°ÔÚËþÉϵķŴóÆ÷£¨Ëþ·Å£©K:JFD(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
There are three types of TMAs: DTMA, RTMA and DDTMA. ¨C>DTMA ¨C>RTMA ¨C>DDTMA
 3dsÒ²f12K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TMSI Temporary Mobile Subscriber Identity  ÁÙʱÒƶ¯Óû§Ê¶±ðÂë 1fkjhfjoK:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 TN Timeslot Number ʱ϶Âë
 
 TN O&M Transport Network operation and Maintenance (in general).  *&#%kcvmmvK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 Tora ASIC in the TRU 1fds3a21fdK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 s3a21fd3s1K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TRA Transcoder Rate Adapter ±àÂëת»»ËÙÂÊÊÊÅäÆ÷#(*)#$@&K:JFD()$±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
The TRA Unit performs transcoding of speech information and rate adaption of data information. a3dsÒK:JFD±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 d5a4f8e342K:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 Tracy ASIC in the TRU K:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 TRAU ËÙÂÊÊÊÅäµ¥Ôª 43289Î÷70K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 
 TRC Transcoder Controller ±àÂëת»»¿ØÖÆÆ÷ #(*$#ʲ21f3dK:JFD()$#_*(±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 21f3dsaf1K:JFD()$#±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
 TRH Transceiver Handler ÊÕ·¢ÐÅ´¦Àí»ú
 *(&#*($(ŶK:JFD()$#_±¾ÎÄÀ´×ÔÒƶ¯Í¨ÐÅÍøwww.mscbsc.com,°æȨËùÓÐ
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 TRXC Transceiver Controller ÊÕ·¢¿ØÖÆÆ÷
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A 0.577 ms period (TDMA frame subunit) corresponding to 156.25 raw bits of information. The eight time slots of each TDMA frame are numbered 0...7. -> Burst
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X bus The X bus carries transmit air data frames between transceivers. This is used for baseband frequency hopping.
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