A number of switches will allow you to do database lookups and take action based on the result. One open source project is Freeswitch (www.freeswitch.org) and it can do this. On Friday 02 December 2011 18:02:44 Stappenbeck, Mark wrote:
Does anyone know of a SIP product that will block outbound calls to the PSTN from a PBX, based on a database match? It would need to be loaded with the national registry, as well as allow the end user to load numbers themselves. This could reside on a local server, or out in the cloud. Not quite a predictive dialer, since the end user will dial the number from the handset themselves, and receive an appropriate recording notifying them if the number dialed matched a "blocked" number.
Thanks for any help -Mark S