Good morning! I have a client that has Yealink T41 phones and they have two different DIDs that ring into their organization. They are looking to get a distinctive ring for each DID so they can tell without looking which number has been call. Each DID goes to a different ring group and I was hoping to be able to set a ring tone based on the group or, baring that, set a ring tone based on the extension and will create two extensions for each phone. The first thing I tried was creating two extensions on each phone and then on the phone itself setting the ring tone for that extension but the system seems to be overriding that for external calls. Would it be possible to manipulate the SIP headers for one of the DIDs to have calls report as internal? Can anyone provide guidance on how I might accomplish this or if its even possible?