DVX PLus III Digital Talkpath voicemail.
Been installed and working over 8 years. Used voicemail replaced a year ago after harddrive on original voicemail died.
2 weeks ago (customer remembers)they started to get extreme low volume on messages left in all mailboxes.
Customer has not changed service providers.
Initial calls answered live are perfect.
Calls answered with autoattendant yo can hear

attendant fine then transfer to extens and hear mailbox greeting fine.
Once you leave message there is where the low volume level starts. Replaying voicemail can barely be heard on speaker or handset.