Add the following entries to the EPM base file editor. Once deployed you can use the existing ring types within FreePBX which will match to the list below.

account.1.alert_info_url_enable = 1

distinctive_ring_tones.alert_info.1.ringer = 1
distinctive_ring_tones.alert_info.2.ringer = 2
distinctive_ring_tones.alert_info.3.ringer = 3
distinctive_ring_tones.alert_info.4.ringer = 4
distinctive_ring_tones.alert_info.5.ringer = 5
distinctive_ring_tones.alert_info.6.ringer = 6
distinctive_ring_tones.alert_info.7.ringer = 7
distinctive_ring_tones.alert_info.1.text = ring1
distinctive_ring_tones.alert_info.2.text = ring2
distinctive_ring_tones.alert_info.3.text = ring3
distinctive_ring_tones.alert_info.4.text = ring4
distinctive_ring_tones.alert_info.5.text = ring5
distinctive_ring_tones.alert_info.6.text = ring6
distinctive_ring_tones.alert_info.7.text = ring7