›› 2011, Vol. 24 ›› Issue (10): 39-.

• Articles • Previous Articles     Next Articles

Realization of Out-band Transmission of DTMF on SIP Extension

 CHI Xiao-Gang, LUO Wei-Bing, BA Gang   

  1. (1.Postgraduate Brigade,CAPF,Xi'an 710086,China;2.Department of Communication Engineering,CAPF,Xi'an 710086,China)
  • Online:2011-10-15 Published:2011-10-24

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Abstract:

As a dial tone signal,DTMF signal can be achieved not only in dial-up business,but it can be achieved for more value-added services through the extensions of SIP.In this paper,the extensions of SIP INFO methods and event notification mechanisms are described,and the two methods for transmitting DTMF signal are analyzed and compared.The out-band transmission of DTMF is realized.

Key words: dual-tone multi-frequency;INFO;event notification mechanism

CLC Number: 

  • TN916

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