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DTMF ÁÖÆļö
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DTMF ÁÖÆļö

DTMF 1 = 697 Hz & 1209 Hz

DTMF 2 = 697 Hz & 1336 Hz

DTMF 3 = 697 Hz & 1477 Hz

DTMF 4 = 770 Hz & 1209 Hz

DTMF 5 = 770 Hz & 1336 Hz

DTMF 6 = 770 Hz & 1477 Hz

DTMF 7 = 852 Hz & 1209 Hz

DTMF 8 = 852 Hz & 1336 Hz

DTMF 9 = 852 Hz & 1477 Hz

DTMF 0 = 941 Hz & 1336 Hz

DTMF * = 941 Hz & 1209 Hz

DTMF # = 941 Hz & 1477 Hz

?DTMF busy signal = 480 Hz & 620 Hz

DTMF dial tone = 350 Hz & 440 Hz

DTMF ringback tone (US) = 440 Hz & 480 Hz

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SIP±â¹Ý »ç¿ëÇÒ¼ö ÀÖ´Â DTMFÁ¾·ù

1 inband DTMF

¿Àµð¿À ½ÅÈ£¿¡ DTMF À½¿øÀúÀåÈÄ Àü´Þ

?2. RFC2833 DTMF

RTP ÆÐŶ¿¡ DTMF Á¤º¸¸¦ µðÁöÅзΠÀúÀåÇÏ¿© Àü¼Û
 
3. SIP INFO DTMF

 - outband DTMF

SIP INFO ¸Þ¼¼Áö Body¿¡ DTMF ¹®ÀÚ ÀúÀå Àü¼Û


http://blog.naver.com/PostView.nhn?blogId=mizii4&logNo=221913339569

 
   
 

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