HI all

i connect OS7070 V4.60b with OS7200 V4.46d using Qsig .

simply Qsig is work because i can call from any extension in OS7070 to any extension in os7200 And vice versa also.

My problem if any extension (for example 201) at OS7200 is ringing to a busy extension (301) at OS7070 , Message (opp busy) is appeared .

My problem is i need to operate call back? how i can programming call back instead of Message (opp busy)that appeared?