There has been an update to the VFX system that effects the Number of Rings before Voicemail Answer or Call Forward no answer , this will effect all current settings.
Previously the Number of Rings set was double the Amount heard by the ringing party, this has now to be fixed so tha the number of Rings heard by either party now matches with the System Setting before Call Forward or Divert to VoiceMail.
IE....If call Forward on No Answer is set to 4 Rings , the Phone will Ring 4 Times and the User will Hear 4 Rings (Prevoiusly Heard 8).
This does bring the service into line so all ringing and settings on VFX Match, it does however effect current settings so will require adjust by customers using this setting at present.