We are trying to implement one-stage dialing service using Asterisk. That is, incoming calls are received from the caller at one PRI channel and bridged to the destination party via another PRI channel. However, it seems that Asterisk is unable to pass the ring tone from the destination party directly to the calling party unless Asterisk answers the inbound leg first. The caller always hear the ring tone generated by Asterisk, instead of the ring tone of the destination country. Is there any way I can pass the ring tone directly from the destination leg to the origination leg without first answering the origination leg?