Distinctive ringtones for different DID

[mkeuter]

There are other ways to use different ringtones for different DIDs/line:

You could send a SIP header in the PBX (like this example for Asterisk):

Code:

exten => s,n,SIPAddHeader("Alert-Info:<http://www.notused.com>\;info=test123\;x-line-id=0")

And then go to Settings(Phone)/Ring on your phone and enter "test123" for Internal Ringer Text and choose a different Internal Ringer file.