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¿µ¹®Ç¥Áظí SYSTEM FOR ESTABLISHING COMMUNICATION BETWEEN AUDIOVISUAL TERMINALS USING DIGITAL CHANNELS UP TO 2Mbit/s
Çѱ۳»¿ë¿ä¾à °íÁ¤µÈ ºñÆ®-À² ³×Æ®¿öÅ©(ISDV°ú °°Àº)¿¡¼­ ºñµð¿ÀÀüÈ­, ¿µ»óȸÀÇ ±×¸®°í ´Ù¸¥ ´ëÈ­Çü ¸ÖƼ¹Ìµð¾î ¼­ºñ½ºµéÀº ITU-T Rec.H.211¿¡ ¹¦»çµÈ ´ÙÁß ±¸Á¶¿¡ ÀÇÁ¸ÇÑ´Ù. ÀÌ ´ÙÁßÈ­ ³»ÀÇ Á¦¾î ä³ÎÀº °¢ ÇÁ·¹ÀÓ¿¡¼­ BAS À§Ä¡·Î ¸í¸íµÈ´Ù. ÀÌ ±Ç°í¾ÈÀº BAS ÄÚµ¦: Ãʱ⠴ɷ º¯È­¿Í Á¦ÇÑÀûÀÎ ³×Æ®¿öÅ© ÀÛ¿ë; ¼¼¼Ç ³» ¸ðµå ½ºÀ§Äª, ½Ãû°¢ ¸ðµå º¯È­¿Í µ¥ÀÌÅÍ Ã¤³ÎÀÇ È°¼ºÈ­ À» Æ÷ÇÔÇÑ, ¸ðµå ÃʱâÈ­, µéÀ» Æ÷ÇÔÇÑ ¸ðµç Á¡ ´ë Á¡ ÀýÂ÷µé; ´Ù¸¥ ÀýÂ÷µé, ´ÜÀÏ/´ÙÁß Ã¤³Î »óÈ£ Á¢¼Ó, ¾ÏÈ£, ¸ðµå-¼±Åà Áö½Ã, ³×Æ®¿öÅ© ÁÖ¼Ò Àü¼Û°ú BAS È®Àå ÄÚµåµéÀÇ »ç¿ëÀ» ³ªÅ¸³½´Ù.
¿µ¹®³»¿ë¿ä¾à Videophones, videoconferencing and other conversational multimedia services on fixed bit0rate networks depend on the multiplex structure described in ITU-T Rec. H.221. The control channel within this multiplex is the so-called BAS position in each frame. This Recommendation describes all the point-to-point procedures involving the BAS codes: initial capability exchange and mode initialization, including restricted-network operation; in-session mode switching, including audiovisual mode changes and activation of data channels; other procedures, including single/multiple channel interconnection, encryption, mode-preference indication, conveying of network addresses and use of BAS extension codes.
±¹Á¦Ç¥ÁØ ITU-T H.242/R1
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Á¦Á¤ 1993-11-24 TTAS.IT-H242
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