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  IMS(IP Multimedia Subsystems)´Â À¯¹«¼± ȯ°æÀ» ÅëÇÕÇØ ÁÖ´Â ¡®ALL-IP' °³³äÀÇ ÇÙ½É ³×Æ®¿öÅ© ±â¼ú·Î, IP ÇÁ·ÎÅäÄÝÀ» ±â¹ÝÀ¸·Î ÇÏ¿© À½¼º, ¿Àµð¿À, ºñµð¿À ¹× µ¥ÀÌÅÍ µîÀÇ ¸ÖƼ¹Ìµð¾î¸¦ º¹ÇÕÀûÀ¸·Î Á¦°øÇÏ´Â ¼­ºñ½ºÀÔ´Ï´Ù.  

  - Video Color Ring
- VoIP/ Video Phone
- Presence & Availability
- Instant Messaging
- PTT
- Multiparty Video Conference & Collaboration (Game, File Sharing)
 

 

- ATCA Platform, Carrier Grade Server, HMP, Intel Telecom Boards

 

 
  HSS(Home Subscriber Server)´Â UMTS HLR(Home Location Register) ¹× AuC(Authentication Center) ±â´É°ú All IP ³×Æ®¿öÅ©¿¡¼­ÀÇ °¡ÀÔÀÚ Á¤º¸ °ü¸® ¼­¹ö ±â´ÉÀ» Á¦°øÇÏ´Â ½Ã½ºÅÛÀÔ´Ï´Ù.  
 
 
  SIP AS(Application Server)´Â IP ÆÐŶ¸Á¿¡¼­ CSCF/HSSµî°ú ¿¬µ¿À» ÅëÇØ ´Ù¾çÇÑ ºÎ°¡ ¼­ºñ½º¸¦
Á¦°øÇÒ ¼ö ÀÖ´Â ÀÎÇÁ¶ó¸¦ Á¦°øÇÕ´Ï´Ù.
SIP AS´Â ÀÚü ·ÎÁ÷¾È¿¡ ¼­ºñ½º ·ÎÁ÷À» °¡Áö°í ÀÖ´Â °ÍÀÌ ¾Æ´Ï¶ó CPL(Call Processing Language) interpreter ±â´ÉÀ» Áö¿øÇÏ¸ç ¼­ºñ½º ·ÎÁ÷À» ±â¼úÇÑ CPLÀ» ParsingÇÏ¿© ½ÇÇàÇÏ´ÂEngine ±â´ÉÀ» °¡Áø ½Ã½ºÅÛÀÔ´Ï´Ù.
µû¶ó¼­ »õ·Î¿î ¼­ºñ½º¸¦ »ý¼ºÇϰųª Àû¿ëÇϴµ¥ Äڵ带 °íÄ¡´Â ÀÏÀÌ ¾ø±â ¶§¹®¿¡ »ç¾÷ÀÚ Ãø¸é¿¡¼­
À¯¿¬ÇÏ°Ô ¼­ºñ½º¸¦ ·±Äª½Ãų ¼ö ÀÖ´Â ¸ÞÄ¿´ÏÁòÀ» Á¦°øÇÕ´Ï´Ù.
 
 
 
  ÀÀ¿ë¼­¹ö¿Í ¿¬µ¿ÇÏ¿© ´Ù¾çÇÑ ¸ÖƼ¹Ìµð¾î ±â¹ÝÀÇ ¼­ºñ½º(À½¼º, ¿µ»ó, À½¼ºÀνÄ, À½¼ºÈ¸ÀÇ, ¿µ»óȸÀÇ)¸¦ Á¦°øÇÕ´Ï´Ù.  
 
 
 

CSCF(Call Session Control Function)´Â ºñµ¿±â 3G ³×Æ®¿öÅ© »ó¿¡¼­ ´Ù¾çÇÑ ¸ÖƼ¹Ìµð¾î ¼­ºñ½º¸¦
Á¦°øÇϱâ À§ÇÑ SIP±â¹ÝÀÇ Call Control ±â´ÉÀ» Á¦°øÇÕ´Ï´Ù. 3GPP Release 5¿¡¼­ Á¤ÀÇÇÑ IP Multimedia Core Network(IM-CN)»óÀÇ CSCF ±Ô°ÝÀ» ¿ÏÀüÈ÷ Áö¿øÇϸç, µ¿±Ô°Ý¿¡¼­ Á¤ÀÇÇÑ SIP±â¹ÝÀÇ session handling±â´ÉÀ» ¼öÇàÇÕ´Ï´Ù.
¶ÇÇÑ 3GPP Release 5±Ô°Ý¿¡¼­ Á¤ÀÇÇÑ Proxy-CSCF(P-CSCF), Interrogating-CSCF(I-CSCF), Serving-CSCF(S-CSCF)±â´ÉÀ» ¸ðµÎ Áö¿øÇÕ´Ï´Ù. °¢ node°¡ Á¦°øÇÏ´Â ±â´ÉÀº ´ÙÀ½°ú °°½À´Ï´Ù.

* P-CSCF: ´Ü¸»±â IM-CN Subsystem(IMS)¿¡ Á¢¼ÓÇϱâ À§ÇÑ ÃÖÃÊ Á¢¼ÓÁ¡ ¿ªÇÒÀ» ¼öÇàÇϸç, ÇâÈÄ PCF±â´ÉÀ» ÅëÇØ GGSN°ú ¿¬°üµÈ QoS±â´É Á¦°ø

* I-CSCF: Âø½Å °¡ÀÔÀÚ°¡ ¼ÓÇÑ IMS·Î Âø½ÅÈ£¸¦ ¿¬°áÇϱâ À§ÇÑ ÇØ´ç IMSÀÇ Á¢¼ÓÁ¡ ¿ªÇÒÀ» ¼öÇàÇϸç, HSS ¿¬µ¿ ¹× ±Ô°Ý¿¡ Á¤ÀÇÇÑ THIG ±â´É Á¦°ø

* S-CSCF: IMSÀÇ ¸ðµç session state °ü¸® ±â´É ¹× HSS¿Í ¿¬µ¿ÇÏ¿© °¡ÀÔÀÚ ÇÁ·ÎÆÄÀÏÀ» ´Ù¿î·Îµå
¹Þ°í, °¡ÀÔÀÚ ÇÁ·ÎÆÄÀÏ »óÀÇ iFC¸¦ ÅëÇØ Application server¿¬µ¿ ±â´É Á¦°ø