Hi All, We currently run an Avaya system in one part of our office and I'm looking and introducing 3CX in another part. I want to be able to transfer calls from one system to the other internally. My Avaya guy has setup a SIP trunk and pointed it at my system and I have setup a generic SIP provider and pointed it at his system but I'm not getting anything when I try and transfer over. I've made an outbound rule for numbers starting with 7, the digit gets stripped and then it's transferred over the outbound connection but I don't get anything. My Avaya guy is telling me everything is right on his end, so where can I start digging to prove which of us has the issue? Thanks. Andrew.