Hello all, seems like 3CX support is reluctant in helping us out on the simple fact that the call sender (inbound DID call) is a Asterisk system. Here is what we are trying to do: We have 5 Remote 3CX Slave Bridge system tied to 1 Master bridge (all using tunnel TCP) Dialing plan: 3CX-OTD = 3xxx (main extension is 3000) 3CX-AUR= 2xxx 3CX-SSM = 50xx 3CX-ALB = 52xx 3CX-DAN = 49xx 3CX-GLA = 60xx and 61xx The master Bridge is setup with a Generic SIP Trunk to Asterisk. Inbound calls coming in from this VOIP Provider have 6 digits and basically require to be routed based on the dialing plan above. Example; old user on asterisk dials 2347 (2346 is the other test extension which also doesnt work.), Asterisk sends call to 3CX-OTD (Master) and appends 22 in front making the DID (Request URI) look like 222347. All 2xxx extensions are located on 3CX-AUR, at least the ones that have been migrated (just 2 for now [2347 and 2346] as this is not working). I need to get the master to route the calls based on the 222xxx to the 3CX-AUR, but it wont do it, it sends all calls to 3000 the default 3CX-OTD extension. I simply want to route the calls inbound from the VOIP Provider to the proper 3CX slave. They wont help stating that the interface system is asterisk and they wont help because of that. Yet, if i ask how is it done if the inbound call comes from a voip provider or gateway, they wont say. I don't see the difference here. just route the call to the 3CX based on the leading digit !?! Thanks to anyone that can help.