| 摘要 |
<p>A method for realizing the ringback during the call forwarding, comprises: set the forwarding flag bit of the CRBT in the signaling received from SCP; when intelligent network service trigger point receives the call from the calling party and determines that the called party is a intelligent network service user, it trigs the call to SCP; SCP judges if the called user is both CRBT service user and no answer transferring service user, if so, it transmits signaling to service performing device, and sets the CRBT forwarding flag bit in the said signaling; after the service performing device receives the said signaling, it determines if the CRBT forwarding flag bit in the said signaling is set, if so, voice source flat plays continually the pre-customized CRBT for calling party during performing call forwarding. The invention avoids the switching of the CRBT during call forwarding, and makes the calling party listen the continual CRBT.</p> |
