Just activated QSIG trunks to Cisco 8.0. has some issues originally but name display, clid, seems to work fine.We are having some issues doing tandem trunking , not getting  ringback or not hearing ringback to some locations.Tracing calls and activating dchannel lookup, seems to indicate calls established.I am sending calls over network via location codes, not cdp...I programmed rdb from documentation from cisco, left out some prompts that I normally activate when doing inter trunking on routes...any ideas, like I said works ok to some sites not others..