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SDSL ?!
ÀÛ¼ºÀÚ : ·£°ø»ç Á¶È¸¼ö : 3171 



SDSL (Single-line DSL or Symmetric DSL)˼?
SDSLÀº HDSL°ú ¸¶Âù°¡Áö·Î ´ëĪÀû Àü¼Û ¹æ½ÄÀ̸ç ÃÖ´ë 2.3MbpsÀÇ Àü¼Û¼Óµµ¸¦ Áö¿øÇÑ´Ù.
HDSLÀº 2pairs(T1), 3pairs(E1) ÀüÈ­¼±À» »ç¿ëÇÏ´Â ¹Ý¸é SDSLÀº ÀüÈ­¼±ÀÇ 1pair¸¸À» »ç¿ëÇÑ´Ù.
Single-line DSL ¹æ½ÄÀº HDSL ±â¼úÀ» ±×´ë·Î ÀÌ¿ëÇ쵂 ÇÑ ½ÖÀÇ ÀüÈ­¼±À» »ç¿ëÇÏ´Â °ÍÀÌ°í, Symmetric DSL ¹æ½ÄÀº ADSL ±â¼úÀ» ÀÌ¿ëÇ쵂 »ó,ÇÏÇâ Àü¼Û¼Óµµ¸¦ °°°Ô ÇÏ¿© »ç¿ëÇÏ´Â °ÍÀÌ´Ù.

HDSL°ú´Â ´Þ¸® ´ÜÀÏ Æ®À§½ºÆ® Æä¾î¸¦ »ç¿ë
´ÜÀÏ Æä¾î ·ÎÄà ·çÇÁ»ó¿¡¼­ ´ëĪÀûÀÎ ¼Óµµ°¡ ¿ä±¸µÇ´Â ¾ÖÇø®ÄÉÀ̼Ç, Áï ¶ó¿ìÅÍ ¿¬°á, È­»óȸÀÇ ½Ã½ºÅÛ, ¿ø°Ý°­ÀÇ µî¿¡
  ÁÖ·Î »ç¿ë
¿î¿µ°Å¸®°¡ 3Km Á¦ÇѵÊ
  Àü¼Û¹æ½Ä ¼Óµµ ȸ¼±
SDSL ´ëĪ ÃÖ´ë 2.3Mbps 1 Pair (2¼±) ÀüÈ­¼±
HDSL ´ëĪ T1 (1.544Mbps) 2 Pair (4¼±) ÀüÈ­¼±
E1 (2.048Mbps)
  Àü¼Û¹æ½Ä Á¤º¸Àü¼Û
SDSL ´ëĪ Data¸¸ Àü¼Û
Voice Àü¼ÛÀº ±âÁ¸ÀÇÀüÈ­¼± ȯ°æÀ» »ç¿ë
ADSL ´ëĪ °°Àº ¶óÀÎ »ó¿¡¼­ Data¿Í Voice Àü¼Û
[ SDSL °ú HDSL ºñ±³ ] [ SDSL °ú ADSL ºñ±³ ]
ÇÑ °³ÀÇ ±¸¸® Æä¾î¿¡¼­ ¿î¿ëµÇ¹Ç·Î ÀÚ¿ø ÀÌ¿ë È¿À²ÀÌ ¶Ù¾î³²
±âÁ¸ÀÇ À½¼ºÅëÈ­¸¦ À§ÇÑ POSTSµµ ±×´ë·Î »ç¿ëÇÒ ¼ö ÀÖ¾î µ¥ÀÌÅÍ Àü¼ÛÇÔ°ú ÀüÈ­¸¦ »ç¿ëÇÒ ¼ö ÀÖÀ½
  ¿î¿µ°Å¸®°¡ 3Km Á¦ÇѵÊ
  - ÇöÀçÀÇ Á¤º¸Åë½Å ±â°£¸ÁÀ» °í·ÁÇÒ ¶§, ÀüÈ­Åë½ÅÀº ±âÁ¸ÀÇ ¹æ½ÄÀ» ±×´ë·Î ÀÌ¿ëÇÏ´Â °ÍÀÌ Æí¸®¼º ¾ÈÁ¤¼º¿¡ À¯¸®
T1, E1 CSU, FDSU ´ë¿ë »ç¿ë °¡´É
´©È­(Crosstalk)Çö»óÀÌ ½Ã½ºÅÛ¿¡ ¿µÇâÀ» ¹ÌÃÄ Àü¼Û ¼Óµµ°¡ Á¦Çѵǰí (¾à 1Mbps ³»¿Ü) Àü¼Û °Å¸®°¡ ª¾ÆÁö´Â ´ÜÁ¡ÀÌ ÀÖÀ½
2B1Q(2 Bits per Quarternary)¶ó´Â ¶óÀÎÄڵ带 ÀÌ¿ëÇÏ¿© Àü¼ÛÇϹǷΠÁÖÆļö ½ºÆåÆ®·³ÀÌ 0HzºÎÅÍ ºÐÆ÷Çϱ⠶§¹®¿¡ POTS½ÅÈ£¸¦ °°ÀÌ º¸³¾ ¼ö°¡ ¾øÀ½.
»ç¿ë ÁÖÆļö°¡ ³ôÀ½
Ÿ ȸ¼±¿¡ ¿µÇâÀ» ÁÜ
±â¾÷µé¿¡ ´ëÇÑ Àü¿ë¼± ¼­ºñ½º¸¦ À§ÇÑ ±â¼ú·Î ¹ßÀü
ÃÖ±Ùµé¾î ¹Ì±¹ µîÁö¿¡¼­ ADSLÀÇ ºñ´ëĪ¼ºÀ» ±Øº¹ÇÏ°í ½Ã½ºÅÛ¿¡¼­ »ý±æÁö ¸ð¸£´Â ¼±·Î ÀâÀ½¿¡ ÀÇÇÑ ¿µÇâ(ÇöÀç È®½ÇÈ÷ ¹àÇôÁöÁö ¾ÊÀº »óÅÂ)À» ÇÇÇÒ ¼ö ÀÖ´Â ÀÌ¹Ì °ËÁõµÈ 2B1Q ¶óÀÎÄÚµùÀ» »ç¿ëÇÏ´Â SDSLÀÌ ÃÖ±Ù ´Ù¼öÀÇ xDSL»ç¾÷Àڵ鿡°Ô äÅõǰí ÀÖÀ½

DSL
ŸÀÔ
¼³ ¸í ÃÖ°í Àü¼Û¼Óµµ
ÇÏÇâ / »óÇâ
µµ´Þ
°Å¸®
Ư ¡ Àû¿ë ºÐ¾ß ÀÀ ¿ë
ISDL ISDN DSL 144 K
Symmetric
5.5 Km ISDN ÀÎÅͳÝ
°í¼Ó Á¢¼Ó
ISDN ERI ¼­ºñ½º¿Í ºñ½ÁÇϳª µ¥ÀÌÅÍ Àü¿ë
(À½¼ºÀº µ¿ÀÏ È¸¼±À¸·Î »ç¿ë ºÒ°¡)
CDSL Consumer DSL
ÇÏÇâ ; 1 Mbps,
»óÇâ ; ÇÏÇ⺸´Ù ³·Àº ¼Óµµ
5.5 Km - - ½ºÆú¸±ÅÍ ¾ø´Â °¡Á¤ ¹× ¼Ò±Ô¸ð»ç¾÷Àå¿ë ¼­ºñ½º; DSL Lite¿Í À¯»ç
DSL
Lite
Splitelss' DSL w/o the 'truckroll' ÇÏÇâ ; 1,544 Mbps 5.5 Km - - ADSL°ú À¯»ç ; ¼Óµµ´Â ´Ù¼Ò ´À¸° ´ë½Å »ç¿ëÀÚ Ãø¿¡ ½ºÆú¸®Å͸¦ »ç¿ëÇÏÁö ¾ÊÀ½
HDSL 4-Wire
High bit-rate DSL
1,544 Mbps ~ 2.048 Mbps
Symmetric
4.6 Km 4¼±½Ä ±â¾÷¿ë
WAN
¼­¹ö¿Í Àüȭȸ»ç ¶Ç´Â ±â¾÷ ³»¿¡¼­ T1/E1 ¼­ºñ½º; WAN, LAN ¼­¹öÁ¢¼Ó
HDSL2 2-Wire
High bit-rate DSL
1,544 Mbps ~ 2.048 Mbps
Symmetric
4.6 Km 2¼±½Ä ±â¾÷¿ë
WAN
¼­¹ö¿Í Àüȭȸ»ç ¶Ç´Â ±â¾÷ ³»¿¡¼­ T1/E1 ¼­ºñ½º; WAN, LAN ¼­¹öÁ¢¼Ó
SDSL Single-line DSL
~ 2 Mbps
Symmetric
6 Km ºñ Ç¥ÁØ Áß¼Ò±Ô¸ð
±â¾÷¿ë
HDSL°ú µ¿ÀÏÇϳª ÀüÈ­¼±À» ÇÑ ½Ö¸¸ ¿ä±¸
ADSL Asymmetric DSL
ÇÏÇâ ; 1,544 - 6.1 Mbps
»óÇâ ; 16 - 640 kbps
5.5 Km À½¼ºÀüÈ­¿Í ÇÔ²² »ç¿ë ÀÎÅͳÝ
ÃÊ°í¼Ó Á¢¼Ó
ÀÎÅͳݰú À¥ Á¢¼Ó, µ¿È­»ó, VOD, ¿ø°Ý LAN Á¢¼Ó¿¡ »ç¿ë
RADSL Rate-Adaptive DSL from Westell 640 kbps-2.2 Mbps
272 kbps-1,088 Mbps
-
- - ADSL°ú À¯»ç
VDSL Very high DSL 52 M / 6.4 M
34 M or 6.5M Symmetric
0.3 Km
0.3 or 1.5 Km
À½¼ºÀüÈ­¿Í ÇÔ²² »ç¿ë ºñµð¿À ¹×
ÀÎÅÍ³Ý Á¢¼Ó
ATM¸Á ; FTTN(fiver to the neighborhood)
Application
File Type
File Size Modem
28.8 kb/s
ISDN
128 kb/s
xDSL
384 kb/s
xDSL
1.5 Mb/s
xDSL
6.1 Mb/s
All User Email 30 KB 8.3 sec 1.9 sec 0.63 sec 0.16 sec 0.04 sec
Consumer
Digitized Photo
125 KB 34.7 sec 7.8 sec 2.6 sec 0.6 sec 0.2 sec
Business User
Word Files
250 KB 69.4 sec 15.6 sec 0.2 sec 1.3 sec 0.3 sec
Telecommuter
Videoconferencing
384 KB/s No No YES YES YES
Telemedicine
X-ray
5 MB 23.1 min 5.2 min 1.7 min 25.9 sec 6.5 sec
Remote LAN
Acess Bulk File
20 MB 1.5 hr 20.0 min 6.9 min 1.7 min 26.0 sec
NSB Series´Â ´ëĪÇü DSL (Symmetric DSL) ÀåÄ¡·Î½á °í¼ÓÀÇ IP Data¸¦ Àü¼ÛÇÒ ¼ö ÀÖÀ¸¸ç, ¸ðµç»ç¾÷ÀÚ¿¡°Ô ¼Õ½¬¿î ³×Æ®¿öÅ© È®ÀåÀ» Áö¿ø ÇÕ´Ï´Ù.
NSB Series´Â ¼Û¼ö½Å ¼Óµµ°¡ ´ëĪÀûÀ¸·Î LAN ³×Æ®¿öÅ©ÀÇ IP Data¸¦ ÃÖÀú 144 Kbps ¿¡¼­ ÃÖ´ë 2.3 Mbps ±îÁö ¼±ÅÃÀû /
  Full Duplex ¹æ½ÄÀ¸·Î ÀÏ¹Ý ±¸¸®¼± (±âÁ¸ ÀüÈ­ ȸ¼± Æ÷ÇÔ)À» ÀÌ¿ëÇÏ¿© ÃÖ´ë 5.4 Km (0.4 mm Cable ±âÁØ)±îÁö Àü¼ÛÇÒ ¼ö
  ÀÖ´Â ÀåÄ¡ÀÔ´Ï´Ù.
NSB Series´Â 2B1QÀÇ º¯Á¶ ¹æ½Ä°ú PNP±â´ÉÀÇ Ã¤¿ëÀ¸·Î ¼³Ä¡ ¹× »ç¿ë½Ã Ưº°ÇÑ Á¶ÀÛ ¾øÀÌ »ç¿ëÀÌ °¡´ÉÇÕ´Ï´Ù.
NSB Series´Â ¸ðµç ÀÎÅÍ³Ý »ç¾÷ÀÚ(»ç¿ëÀÚ)¿¡°Ô Àû¿ëµÉ »Ó¸¸ ¾Æ´Ï¶ó, ÀûÀº ºñ¿ëÀ¸·Î ¼Õ½±°Ô LAN ³×Æ®¿öÅ©¸¦ È®Àå ±¸ÃàÇÒ
  ¼ö ÀÖ½À´Ï´Ù
NSB-230S NSB-6230 LMU(System Center) NSB-2307s NSB-2375
Á¦Ç°»çÁø
Àü¼Û ¼Óµµ 144 Kbps - 2.3 Mbps
ÃÖ´ë µµ´Þ °Å¸®
5.4 Km ; 144 Kbps ±âÁØ (0.4 mm ÄÉÀ̺íÁ¶°Ç)
Encoding 2B1Q
LAN Á¢¼Ó IEEE 802.3 Ethernet 10 Base T , RJ-45
DSL Á¢¼Ó RJ-11 Terminal Block Wiring
Á¦°ø Æ÷Æ®¼ö 1 LAN , 1 DSL 6 LAN, 1 DSL 1 LAN 1 DSL
(LMU´Â 12 Slot Shelf »ç¿ë)
1 LAN, 7 DSL 15 LAN, 75 DSL
AUTO MDI / MDX Áö¿ø Áö¿ø Áö¿ø NO NO
»ç¿ë Àü¿ø Adapter
In : 90~250 VAC
(Free Voltage)
Out : 5 VDC 1A r
90~250 VAC
(Free Voltage)
¶Ç´Â DC 5V 2A
Adapte
90~250 VAC
(Free Voltage)
Dual PSU Áö¿ø
(Option)
90~250 VAC
Free
Voltage
220 VAC
Àü¿ø ÀÌÁßÈ­
±¸¼º
¹×
¿ëµµ
´Üµ¶Çü ·£ ¸ðµ©
·£ ¸ðµ©¿¡ º°µµÀÇ
Switching HUB¸¦
Á¢¼ÓÇϰųª, ´Ü¸»
±â¸¦ Á¢¼ÓÇÏ¿© »ç¿ëÇÏ´Â Àåºñ
1 ¸ðµ© + 6 Æ÷Æ®
10/100 Switching
HUB ³»Àå
º°µµÀÇ HUB¾øÀÌ
¿©·¯´ëÀÇ PC¸¦ Á¢¼ÓÇÒ ¼ö ÀÖ´Ù.
»þ½Ã ŸÀÔÀÇ ·£¸ðµ©
(12Æ÷Æ® / »þ½Ã)
LMU 12´ë ÀåÂø °¡´É, Àü¿ø ÀÌÁßÈ­
µ¿ÀÏ Shelf³» ¹Ìµð¾î ÄÁ¹öÅÍ, ¸µÅ© ¸¶½ºÅÍ Àåºñ È¥¿ë °¡´É
Åë½Å »ç¾÷ÀÚ ¹× ±â¾÷¿ë
¿©·¯´ëÀÇ ·£ ¸ðµ©À»
»ç¿ëÇÒ °æ¿ì »ç¿ë
1´ëÀÇ Àåºñ¿¡ 7ä³ÎÀÇ ·£ ¸ðµ©ÀÌ ³»ÀåµÈ
Àåºñ
7¸ðµ© + Switching
HUB ³»Àå + 1 Up-
Link Port
»þ½Ã ŸÀÔÀÇ ·£¸ðµ©
(ÃÖ´ë 75Æ÷Æ®)
Åë½Å»ç¾÷ÀÚ¿ëÀ¸·Î
1 Shelf¿¡ 15ÀåÀÇ Ä«
µå¸¦ ÀåÂøÇÒ ¼ö ÀÖÀ¸
¸ç, ÃÖ´ë 75Æ÷Æ®ÀÇ
·£ ¸ðµ© Æ÷Æ® Áö¿ø
 
 
 
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[ÀÌ¿ë¾à°ü] [°³ÀÎÁ¤º¸ Ãë±Þ¹æħ] °³ÀÎÁ¤º¸´ã´çÀÚ : ¾È±â¼¼ ´ëÇ¥ : ¾È±â¼¼
»ç¾÷Àå¼ÒÀçÁö : ¼­¿ï ¿ë»ê±¸ »õâ·Î 181 (ÇÑ°­·Î2°¡, ¼±Àλó°¡22µ¿ 1046È£,1047È£,1048È£)
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