Omnipro II not answering remote phone/dial-in

[mjs]

My HAI OmniPro II system just suddenly stopped answering / picking up when i dial into the system from the phone.
I do the typical dial, hang up, wait 6 seconds, dial again, and when i get the beep, i enter the security code (as i always have), but then instead of hearing the voice attendant, i hear a second beep, then 4 sec delay, the 3rd beep, then nothing.
 
Anyone know how to fix this?

 

[GingerSwag]

Did you ever get this answered? Are you using a VOIP system. That is our current issue. All but making the system useless.