ACM with cause indicator 31

Could you help me in this question?

What’s the correct signaling procedure when ISUP msg ACM with cause indicator 31 is received?

  • The other exchange send this ACM(with C.I 31) and after that the call would be connected to announcement although the call has being released by another side.

Should call be released or not?

I’ve already seen Q.767 and it’s not clear to me.