Hi! I took the liberty of adding result code to rtpengine_offer. It was used in the example, but not stated in the README. When generating a new README a lot of new stuff showed up that wasn’t generated from the XML before. I hope I did not reveal anything secret :-) I humbly suggest that you create a different result code, like -2, if there are no RTPengines available. Right now a -1 indicates a lot of different errors. I would also like to suggest PRACK to the methods that can be approved to carry an SDP, as it is rather commonly used. Thanks. /O