Hi all,

I have same problem.
1.Ring Back Tone can't hear.
2.extension telephone->SIPphone(H323) is NG but 
  SIPphone(H323)->extension telephone is OK.
  It is one way sound.


extension telephone-->PBX-->GW-------->Asterisk-->SIPphone(H323)
                                            |                       |
                                            |    SETUP          |
                                            |------------>|
                                            |   CALL PROC   |
                                            |<------------|
    1.                                      |     ALERT        |
      X Ring Back Tone <-----  |<------------|------------->calling Tone 
          (can't hear sound)         |    Connect       |                       
     (can hear sound)
                                             |<------------| On fook
                                             |     RTP            |
    2.                                      | one way sound  |
                                            |------XXX--->|        NG
                                    OK    |<-----OOO- --| 

Please tell me,Asterisk setting.
Best Regards,
Tetsuya.Y

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