A little backgroung information. I have an option 11C Rls. 4.5 that we are looking to integrate with a Cisco Call Manager via QSIG trunking. I have package 263 which is the basic QSIG package but do not have packages 305 QSIGGF or 316 QSIG-SS. I have yet to find an example or site currently in production where the interface type for the d-channel is not ISGF. Without package 305 that is not possible but the interface type can be built as ISIG. So, has anyone been successful with QSIG trunking to a call manager with an ISIG interface instead of ISGF. Also, what functionality would you lose being built as ISIG instead of ISGF if it can be done. There are seperate voicemail systems so no message waiting indicators would be involved. We're really just looking for 4 digit dialing between the sights along with name display. Thanks. Any thoughts would be greatly appreciated.