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2 1) 1. 5 2. 6 2.1 6 2.2 7 2.3 13 2.4 16 2.5 19 2.6 25 2.7 28 3. 32 3.1 33 3.2 42 46 1.,,,. 2004 13 4,841 0.6%. 2004,,. *, (02) 570 4491, sky@kisdi.re.kr( : ) * *, (02) 570 4164, milip@kisdi.re.kr( :, ) * * *, (02) 570 4122, snkon@kisdi.re.kr( : ) * * * *, (02) 570 4396, dy0411@kisdi.re.kr( ) 5

, 2004 1.4%.,, TRS,, 2004 98.7%. 2004 20038.9%,. 1 2 ( : ) 2002 2003 2004 2005 2006 05 09 136,303 134,068 134,841 136,104 137,140 0.8% 152,281 157,078 166,919 173,922 178,921 2.9% 288,584 291,147 301,760 310,025 316,061 1.9% : 2004, 2005KISDI 2. 2.1,,,.. 90,.,.,,, TPS(Triple Play Service)., 99 6

. 1 3 ( : ) 2001 2002 2003 2004 56,020 53,752 47,517 44,302 12,401 13,574 12,567 13,969 8,314 8,570 6,314 6,149 21,020 21,823 20,634 20,968 24,065 32,230 37,282 39,765 6,527 6,354 9,754 9,688 128,347 136,303 134,068 134,841 6.2% 1.6% 0.6% : 1., LM ( ) 2.,,, ISDN, / 3. : 2004 1) 13 4,841 0.6%. 2004,,., 20041.6%. 2.2 1) (local exchange)(access network or local loop)(exchange network) 1), 7

(transmission network) (trunk network). 2),.,, (xdsl ), (LM, ML)., 1999 4 1 KT, 2005 3. 2002KT96%( ) KT, 2006 6, 2004 8,. 2004 2,287, 3) 4 4,302 2004 0.03%2,287.. 1 4 ( : ) 2001 2002 2003 2004 22,725 23,490 22,877 22,870 3.6% 3.7% 2.6% 0.03% :. 2003 2004. 2003 2) 3 1 () 3),, LM ( ) 8

,, LM 4) 11.6% 4 7,517., 9.1%, LM 14.5%. 20046.8% 4 4,302. 2.3%, 13.7%, LM 9.1%. 1 5 ( : ) 2001 2002 2003 2004 56,020 53,752 47,517 44,302 4.0% 11.6% 6.8% :, LM ( ) :,,.,,. KT LM,. KT 3, KT 3,000 52,000 4,500. 2,000., 4,000, 1,800. 2004 0.03%2,287, 2005 11 2,303 0.7%.., 4) LM (Land; L) (Mobile; M) 9

LM,.,,. (Number Portability),.. 2003 6,,,, 2004 8. HA KT 1 6 KT (HA) (DA) DA KT KT HA DA HA KT DA HA DA ( : ) 03. 63 0 63 15,288 0 15,288 0 0 0 15,351 04. 9,756 0 9,756 173,310 0 173,310 151 50 201 183,267 2005. 1 964 0 964 9,212 1 9,213 471 97 568 10,745 2 1,706 0 1,706 5,892 0 5,892 343 123 466 8,064 3 5,471 17 5,488 9,575 0 9,575 572 101 673 15,736 4 4,178 5 4,183 12,473 0 12,473 657 170 827 17,483 5 5,853 7 5,860 15,661 3 15,664 563 74 637 22,161 6 7,896 40 7,936 21,539 3 21,542 589 133 722 30,200 7 7,070 44 7,114 22,711 6 22,717 834 143 977 30,808 8 11,038 55 11,093 18,881 3 18,884 751 64 815 30,792 05. 44,176 168 44,344 115,944 16 115,960 4,780 905 5,685 165,989 05. 26.6% 0.1% 26.7% 69.9% 0.0% 69.9% 2.9% 0.5% 3.4% 100.0% : 2004 18 3, 2005 8 16 6. 2004 94.6%, 2005 8KT 26.7%, 69.9%, 3.4%. 2004 10

0.8%..,.. 2) 04, KT 2004 KT 93.8%, 6.2%. 2005KT 93.4%, 6.4%, 0.2%. 1 7 ( :, %) 2002 2003 2004 05. KT 22,550 96.0 21,876 95.6 21,457 93.8 21,492 93.4 940 4.0 1,001 4.4 1,413 6.2 1,475 6.4 26 0.2 23,490 100 22,877 22,870 100 22,993 100 : 2004 8,. KT.,, (local loop), KT.,,,,, TPS(Triple Play Service). 11

2005 8,, 6 150,, 50% 3050. 2005 6,,,,,, 19,. 2005 7 0.1%,,., 2005 2. 3) 2005 2,309 1.0%., 2005 1 8 1 9. 2006 0.5%,,,. 1 8 ( : ) 2003 2004 2005 2006 22,877 22,871 23,094 23,209 0.33% 1.0% 0.5% 47,517 44,302 42,693 41,028 6.8% 3.6% 3.9% : 1. 2., LM ( ), : (2003, 2004 ), (2003 2004 ), 2005 KISDI 12

2005 3.6% 4 2,693., LM, 2005. 2006 3.9%,,,,. 2.3 1). 1996, 1999 KT,, 3.,, 2004 SK 5., VPN, 2000. 2001 1132 30 10,., 2004 11.2%1 3,969.,. 1 9 ( : ) 2001 2002 2003 2004 12,401 13,574 12,567 13,969 9.5% 7.4% 11.2% : 13

/. 2001 10 1 (0 30km), 2 (31km 100km), 3 (101km ). 2001 11 2 3 30 10. 1 25839 20039, 2 KT10 11.67.25 13.110.2,. 2) 2002KT 79.7%, 17%, 3.4%. 2003, 2004.., 3, KT KT., 2004 1.3% 2,179, 2005 0.2%. 2004 SK, 2004 KT 86.9%, 6.8%, 3.8%, 2.8%. 1 10 ( :, %) 2002 2003 2004 2005. KT 19,574 90.3 19,889 90.1 18,947 86.9 18,934 86.7 1,381 6.4 1,505 6.8 1,490 6.8 1,439 6.6 719 3.3 691 3.1 747 3.8 710 3.2 608 2.8 715 3.3 SK 40 0.2 21,674 100 22,085 100 21,791 100 21,836 100 : 14

,., 2002. 2004, SK. (). 2, 3. (, ), KT. ( )..,. 2001 11 2002. 2003 1 2,567, 20041 3,969 11.2%. 2005. 3) 2005 9.2% 1 1,751., 2005. 2006 7.3%, 15

,. 1 11 ( : ) 2003 2004 2005 2006 12,567 13,969 12,682 11,751 11.2% 9.2% 7.3% : : 2003 2004, 2005 KISDI 2.4 1). ( ).,,. 1998. 2004 2004 5) 2.6%. 1998,. 1 12 ( ) ( : ) 2001 2002 2003 2004 8,314 8,570 6,314 6,149 3.1% 26.3% 2.6% : 20022003 : 5) 16

1998. 2005,. 2003 7 SK, SK,. 1 13 3,, 2, SK( ) 5,,,, SK 5,,,, SK : 2005. 12 :,,., KT,, ( ). 2) 2002 KT 46%, 31.6%, 18.6%, 2003 KT, KT (, ),. 17

,,. (arbitrage). 2, 3 KT, 2000.,. 3) 2005 6.3% 6,534.,., 2006,. 2006 5.4%,,,.,. 1 14 ( ) ( : ) 2003 2004 2005 2006 6,314 6,149 6,534 6,181 2.6% 6.3% 5.4% : : 2003 2004, 2005 KISDI 18

2.5 1)? (Circuit Network) (IP Network). (IP Phone to IP Phone, PC to PC, IP Phone to Phone, Phone to Phone). 6) IP Phone IP Phone. 7) 1 IP Phone Internet 2 IP Phone 헤드셋 PC 3 4 Gasteway/ Gatekeeper 3 3 PC 헤드셋 Mobile PSTN 5 PDA Phone Phone : KISDI, 2004 1 1 6) IP Phone to IP Phone PSTN IP(Internet Protocol) IP Phone, PC to PC PSTN ID IP. IP Phone(PC) to Phone PSTN ( ) IP IP Phone, Phone to Phone PSTN PSTN. 7) (2004 53 ),. PC to PC, Phone to Phone. 19

BcN All IP.,,,,. PSTN,,, PSTN. 1 15 ( ) ( ) () ( ) : KISDI, 2004 2004 5 19,, 10 1(2004 53 )., 2005 8 5 ( ), SK( ),, ( )KT, ( ), SK ( ), ( ) 7,,,,, S&C,,, 8. 2005 ( ) 8. 20

2),, TV, 8),.,,. TV (SO),,, TPS. 9),. 10). /. KT,,. 8),,,,, 2005. 8. 22. 9) TV KCT( ), 2005 10 10) NHN,, SK, 21

. 1 16 (2004 ) PSTN, KT 1503 SK KT 0506 HFC 03 14, 36 01 02 03 SK, C&T TPS,,, 00 018 03 10 100 IP PBX 03120, 20 : IDC, 00 03 70 4,0001 22

, PSTN 800 15,000 11) 2005 8 800 15,000. ( /,, ),, (IP Centrex,, ),, (, )... Access Interface, IP,. 12) 2005 8 22,. PSTN. USB. 2005 12 3,500, 12,000. KT,, SK, 2006 KT 2005 11 21 070,. 2005 12 1 070, callstick USB. 2007 2008UMA(VoIP+CDMA) 11) (KISDI, 2005. 12.) 12) (KISDI, 2005. 12.) 23

. 2005 12 1 VoIP. 3) 2005,, 2005. IDC(2004), 2005 1,978 5.19%. 13). 2005, 2006 86.1% 3,682. 2005 8 7, 2006 2006., 14) 2006., 2006 3,682, 184, 2008 7,921. 2007 2010. 2010 BcN 13) (KISDI, 2003), 35% 14),,, All-IP2004 10,,,, 24

., 2010 BcN, CAGR 2005 2009 41.5%., 2010 BcN,, 2010. 2.6 1) (Leased Line Service) 1 1,..,,, PC, (, ).,. 1994 1,. 1998 1996 6, 1997 6 1999,, SK,, ( GnG), KTI., SK,. 2003 ( ) SK 25

SK,. (, ). ( ). KT, KT. KT / /, /,,. 2003 KT60%. 가가 KT 데이콤 파워콤 기타 100% 80% 60% 4.4 9.3 0 7.8 6.1 9.1 12.3 8.8 8 11.3 9.6 7.8 14.3 16.3 8 40% 86.3 77 70.9 71.3 61.4 20% 0% 1999 2000 2001 2002 2003 : KISDI, 2003 1 2 2) 2004 1.6% 2 968 1) ISP, 2), 3), 4) IDC(Internet Data Center), 5) HTS(Home Trading System). 26

40%, 10%.,. 2004 (,, ) 2 9681.6%. 1 17 /,,,, 5, SK,, ( ) 4 / SK,, 3,,,, 5 : 2005 12 : 1 18 15) 2002 2003 2004 ( ) 21,823 20,634 20,968 3.8% 5.4% 1.6% () 627 593 656 : 3) 2006 2005 2.1% 20052 3,657., 3 9,400. 2006 2005 2.1% 2 4,152. 2006,. 2006 WiBro. 15),, ( ), (VPN) (ISP). 27

1 19 ( : ) 2005 2006 23,657 24,152 2.1% : 2005 KISDI 2.7 1), 2004 6 1998 7 Cable TV. 1999 4ADSL, KT 1999 12. ADSL 16) Cable Modem 17).,,. 1999, 2002 1 100 OECD 1,., 2003 72004 6.,,,. SO RO, 2006 6 SO RO2, 2006 6. 16) ADSL(Asymmetric Digital Subscriber Line: ) ) Dedicated Bandwidth Security, ) /, ) POTS, ). 17) Cable Modem Cable Modem 30Mbps (). 28

, 2006 6.,,. 2) 1), 2) 50% ( 60%) FTTC. 3). ADSLCable Modem. KT,, SO. SO/RO 1 20 01 02 03 04 05 10 KT 49.6% 47.3% 50.0% 51.0% 51.7% 26.5% 27.6% 24.4% 23.1% 22.9% 16.8% 12.5% 11.6% 10.8% 7.5% 2.6% 4.3% 3.8% 3.3% 3.0% 2.3% 1.6% 1.3% 1.1% 1.9% 1.6% 1.4% 1.8% 1.7% 0.9% 0.7% SO N/A 5.2% 7.1% 9.0% 11.2% : 2003SO/RO. 2003 29

4 SO 4%, 2005 11 SO 10%. 2003 SO,. 1 21 2000 2001 2002 2003 2004 7 7 6 6 6 12 16 40(93) 44(97) :, :, 60,000 SO 순증 50,000 SO 순증 40,000 30,000 20,000 10,000 0 1월 2월 3월 4월 5월 6월 7월 8월 9월 10월 100,000 기간사업자 순증 50,000 0-50,000 1월 2월 3월 4월 5월 6월 7월 8월 9월 10월 -100,000-150,000-200,000 기간사업자 순증 -250,000-300,000-350,000 : 1 3 2OO5 1 10 SO 30

SO/RO 2004 2003 17% 3 8968.,. 30% 28.2% 25% 20% 23.1% 15% 12.5% 11.4% 11.1% 10% 8.1% 5% 0% 6.4% 4.5% 1.9% 4.5% 2.1% 2.2% 1.7% 1.5% 1.1%1.4% -1.2% 2001년 2002년 2003년 2004년 2005년 -5% : 1 4 1 22 ( : ) 2002 2003 2004 2005. 10 9,864 10,382 10,846 10,701 5.3% 4.5% S0 RO 541 796 1,075 1,362 10,405 11,178 11,921 12,062 1) 7.4% 6.6% : 1) :,, SO. TPS, SO.. 31

3) 2006 4.7% 2006 5.3%. 1) 2005,., 2) VoD IP-TV.,,,., killer application.,. 1 23 ( :, ) 2005 2006 1,225 1,283 4.7% 40,791 42,953 5.3% : 2005 KISDI 3.,, TRS,, 2004 98.7%. 2004 20038.9%,. 32

1 24 ( : ) 2000 2001 2002 2003 2004 2005. 11. 26,816 29,046 32,342 33,592 36,586 38,059 TRS 118 183 214 255 307 346 74 80 84 104 111 112 568 236 149 73 45 42 27,576 29,545 32,789 34,048 37,053 38,559 14.0% 6.9% 3.8% 8.9% : 3.1 1) CDMA IS-95 A/B, CDMA-2000 1x, EV-DO, 3G GSM W-CDMA., W-CDMA, HSDPA, HSUPA, HSOPA. Standards 3GPP Release 99/4 3GPP Release 5 3GPP Release 6 3G Evolution UMTS HSDPA HSUPA HSOPA Commercial 3G Downlink improvement 5x throughput 3Q 2005 Uplink improvement 4Q 2006 Super 3G etc MIMO OFDM(A) New technology Downlink improvement OFDM-Uplink Availability depending on standards evolution : IETE-Expo 2005, UMTS Forum, 2005. 9, 1 5 W-CDMA HSDPA WCDMAWCDMA OFDM300Km/h 14.4 Mbps 33

. HSUPA, HSOPA 100Mbps, 50Mbps. Rel.5(HSDPA), Rel.6(HSUPA), Rel.7(HSOPA). 2),. 1995 1999 95.4% 200060%. 40000000 35000000 30000000 25000000 20000000 15000000 10000000 5000000 0 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 2000 2001 2002 2003 2004 : 1 6 1 25 1999 2000 2001 2002 2003 2004 23,442,724 26,816,398 29,045,596 32,342,493 33,591,758 36,586,052 ( ) 3,373,674 2,229,198 3,296,897 1,249,265 2,994,294 (%) 14.4% 8.3% 11.4% 3.9% 8.9% 8,659,278 12,106,908 13,506,573 15,007,736 15,532,733 16,502,062 () 3,447,630 1,399,665 1,501,163 524,997 969,329 (%) 39.8% 11.6% 11.1% 3.5% 6.2% :, 34

2000. 2000 10% 10%. 2004 8.9%, 3,700,. 2005 11 38,218,423 ( ) 2007 4,000... 1995 2000 75.2%2001 10% 2004 6.2%, 16 5,000.... 2001 7 1 26 2002 1 2002 7 2003 1 2003 7 2004 1 2004 7 2005 1 ( : ) 2005 7 ISMS 7,303 5,418 4,104 2,904 2,122 1,487 973 760 595 WAP/ME 14,261 18,866 23,088 26,335 28,556 30,455 33,562 34560 35,856 21,564 24,284 27,192 29,239 30,678 31,942 34,535 35,320 36,451 31.0% 12.6% 12.0% 7.5% 4.9% 4.1% 8.1% 2.3% 3.2% :,,, MP3, DMB,. 2005 7 3,600. WAP/ME 35

. CDMA- 2000 1x,. 2005 8 CDMA-2000 1x 3,500. 2002 12 1 27 CDMA-2000 1x 2003 4 2003 8 2003 12 2004 4 2004 8 2004 12 2005 4 ( : ) 2005 8 16,537 19,592 22,406 24,827 28,983 31,218 32,537 33,988 35,171 3,798 3,055 2,814 2,421 4,156 2,235 1,319 1,451 1,183 29.8% 18.5% 14.4% 10.8% 16.7% 7.7% 4.2% 4.5% 3.5% : 2000 2,340 2003 1, 2004 2 7,3605 85%. ( : ) 2,736 5년 연평균 성장율 85% 1,829 1,133 234 548 2000 2001 2002 2003 2004 : IR Gartner Dataquest 1 7.,,. /,. 36

3) SK, KTF, LG, SK. SK2005 9 50.9%, 2004 58.5%. LG 16.8%, 13.8%,. SKT 신세기 KTF 한솔M.COM LGT 100% 80% 60% 40% 20% 9.1 90.9 5.3 6.1 6 16.3 66.3 15.1 10.1 16.8 15.3 42.7 14.8 11.7 18.2 13.8 43.1 14.7 11.7 19.7 13.1 40.8 14.7 33 11.41 40.9 14.8 31.9 53.3 14.4 31.1 54.5 16.6 32.1 51.3 16.8 32.3 50.9 0% 96 97 98 99 00 01 02 03 04 05. Q3 : 1 8 SKT KTF LGT 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 12.0 27.1 13.2 28.7 15 27.6 14 26 13.8 27.7 60.9 58.2 57.3 59.9 58.5 2000 2001 2002 2003 2004 : IR 1 9 37

2004.,, W-CDMA. SK 1 4,950, KTF 2,840, LG 230. ( : ) 2,500,000 2,000,000 1,500,000 1,000,000 500,000 0-500,000 SKT KTF LGT 1,943,000 1,511,278 1,495,000 1,140,322 950,656 532,163 433,027 407,426 304,161 283,901 151,307 115,957 154,373 72,587-141,199-59,005 78,781 22,600 1998 1999 2000 2001 2002 2003 2004-154,991-161,657-442,362-1,000,000 : IR 1 10 SK,,. 2005 3 SK 6,500 459 LG14.2. KTF, LGT. SK SK. SK,,,,. 38

( : ) 7,000 6,000 5,442 5,480 5,970 6,530 5,000 4,000 3,000 3,920 4,172 4,703 SKT KTF LGT 2,000 1,000 0 1,377 1,481 1,570 981 1,103 1,235 1,044 328 383 442 426 433 421 459 1Q 04 2Q 04 3Q 04 4Q 04 1Q 05 2Q 05 3Q 05 : IR 1 11 4),,,., 2004 1 1. 2, 010. 2004 SK, 150, 2 200511. ( : ) SKT 567 1,271 857 KTF 242 LGT 1 12 2004 39

, SK KTF. W-CDMAHSDPA,. 2006 WiBro, VoIP.. ( : ) SKT 1,367 1,370 634 612 KTF 583 553 LGT 1 13 200511 2G, 3G USB. WiBro,.. 2006 3.,,,,, /, W-CDMA, WiBro 3G, 4G., 40

..,, MP3, DMB,.,,,.. 5). 2005 4.7%, 2005 2009 2.0%., 2007 4,000, 20094,100., SIM. ( : ) 45,000 40,000 35,000 30,000 25,000 20,000 15,000 10,000 5,000 0 전체 가입자수 증가율 8.9% 38,319 39,548 33,592 36,586 4.7% 3.2% 2003 2004 2005 2006 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 1 14. 41

, 2005 2009 1.7%, 2009 18 4,000., 2006 W-CDMA, DMB. ( : ) 190,000 185,000 180,000 175,000 6.2% 매출액 172,050 증가율 175,651 0.07 0.06 0.05 170,000 165,000 160,000 155,000 155,327 165,021 4.3% 2.1% 0.04 0.03 0.02 150,000 145,000 0.01 140,000 2003 2004 2005 2006 0 1 15 3.2 1) 1 28 1999 2000 2001 2002 2003 2004 TRS ( ) 73 118 183 214 255 307 ( ) 121 172 372 504 757 983 ( ) 56 74 80 84 104 111 ( ) 136 290 200 206 180 205 ( ) 3,033 568 236 149 73 45 ( ) 4,770 986 360 184 91 54 ( ) 608 815 1,074 1,310 723 656 :, 42

) (TRS) 2004 TRS 983, 31 20%. TRS KT TRS 2005 11 93.7%. KT 1998. TRS, TRS., (Dispatch), (PSTN ), (Packet data).. ) 200421, 11 13.9% 6.8%.,,.,, ARPU. 7:3. ) 20045, 4. 1998. 2005 11 97.1%,... 43

2) 1 29 2005 2006 TRS ( ) 352 382 ( ) 1,092 1,298 ( ) 112 115 ( ) 211 218 ( ) 41 34 ( ) 44 29 WiBro ( ) 1,208 ) (TRS) 2008 2009 5.8%, 10.6% 2009 44, 1,600. TRS,. TRS PTT(Push to Talk) PTT. PTT,. ) 2005 2009 2.2%, 2.3%, 2009 12, 230. 013,.,,.. 44

) 2004 2009 16.4%, 36.8% 2009 2, 7. 1998,. ) WiBro WiBro(Wireless Broadband),,,,., WiBro, 60Km, 1Mbps,,. 60Km/h 1Mbps( :128Kbps) 3Mbps(512Kbps). 11MbpsWiBro., WiBro. 구분 무선랜 WiBro 이동전화 가입자당 전송속도 1Mbps 이상 약 1Mbps 약 100kbps 이동성 보행 60km/h 이상 250km/h 이상 단말기 데스크탑, 노트북, PDA 노트북, PDA, 휴대폰 휴대폰, 일부 PDA 셀 반경 약 100m 약 1km 1km~3km 요금제 정액제 종량제+정액제 종량제 : KISDI, 2004. 6. 1 16 WiBro 2006 WiBro 1,200, 2009 2 2. 45

(HSDPA), WiBro. ( :, ) 9,000 8,485 35,000 8,000 7,000 6,000 가입자수 매출액 7,117 22,374 29,062 30,000 25,000 5,000 4,541 20,000 4,000 12,718 15,000 3,000 2,000 1,000 607 2,035 5,096 10,000 5,000 0 1,208 2006 2007 2008 2009 2010 0 1 17 WiBro,,, 2005. 3,,, 2003. 8 (http://dart.fss.or.kr), (2004 2009),, 2005., 2005 IT,, 2005.,, KISDI, 2005.,,, 2003.,,, 2003.,, KISDI,, 2004,, 2005. 46

(http://www.mic.go.kr),, KT,,, 24 47