Hi all, I'm investigating options for using Elastix as a SIP gateway for an existing ISDN based phone system and hoping someone can point me to the right card from the job. Essentially I'd like to insert an Elastix based gateway between the existing PBX and the outside world. As far as Elastix is concerned it should treat the ISDN BRI interfaces as extensions and utilise a SIP trunk. Information on exactly how to do this is pretty sketchy, and finding the right card - if one even exists - has proved fruitless. If anyone can perhaps point me in the right direction I'd very much appreciate it. Thanks in advance for your help. Dave.