Hello, Juha Heinanen schrieb: Erm yes, you are right. Of course. Thanks for the hint! Another question, wouldn't it make sense to allow the lcr engine to somehow rewrite the RURI for a specific call destination, i.e. add a prefix or suffix to the RURI? Or maybe even different header fields for each destination? This would make sense for destinations that require further routing information than just the telephone number. I.e. gateways to the pstn with several pstn trunks to different carriers, or proxies that allow peering to several other networks. This way, intelligence could be kept in a central place, and the border entities would only need to look a a specific prefix or suffix. Regards, Martin