I couldn't find anywhere else to ask these, I saw somewhere else to just ask them here. So if they are in fact in the wrong place, please feel free to move it there. If I am wrong at any point in this post, please forgive me, I am new to Fax over VoIP. I have a fresh install of IncrediblePBX 13, using a CentOS 6 Minimal Installation. Everything works great out of the box, but I'm trying to take the 4 default HylaFax modems and dedicate each one to a specific DID. Everytime I've tried to route a DID to only one of the modems, Asterisk just gives me a busy signal, even though I've hard coded the dial plan in the configuration. For example, I am trying to set up a custom destination, in this case 3291 (FAX1) to route to ttyIAX0, 3292 (FAX2) to route to ttyIAX1, and so on, so that I could route the inbound routes for these dedicated faxes. Is there a documented way to dedicate each ttyIAX modem to only one DID, or are all 4 of the defaults available to all groups/categories. If they're available to everyone, is there an easy way to create a new one and specify the answering DID? If I need to spell it out further (just in case), this is what I'm trying to do: Incoming DID: 8005551212 Receiving Modem: ttyIAX0 Email Group: [email protected] Internal Extension: 3291 Incoming DID: 8005551213 Receiving Modem: ttyIAX1 Email Group: [email protected] Internal Extension: 3292 Incoming DID: 8005551214 Receiving Modem: ttyIAX2 Email Group: [email protected] Internal Extension: 3293 Incoming DID: 8005551215 Receiving Modem: ttyIAX3 Email Group: [email protected] Internal Extension: 3294 I've been working on this for weeks with absolutely no joy. Any help you can provide would be greatly appreciated.