Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Thank´s for your help, I already recived these manual from you
Text excerpt from page 22 (click to view)
Preparing the Answering System Number of Rings
>
Handset You can select the number of times the unit rings before the Answering System answers a call, from �2� to �7� or �Toll saver�*. The factory preset is �4�.
1 Follow steps 1 to 3 of �Caller�s Recording
Time� on page 21.
2 Press Select at �Number of rings�. 3 Select the number of rings by pressing [ ] or >
[ ].
� You can also select the number of rings by pressing [0] (Toll saver*), or [2] to [7].
Number of Select rings Back
Number of rings :4 Back Save
4 Press Save, then press [OFF].
*Toll saver
When you call the unit from a remote operation, the number of rings will tell you if there are any new messages. If the unit answers on the 2nd ring, there is at least one new message. If the unit answers on the 4th ring, there are no new messages. To save the toll charges for the call, hang up immediately when you hear the 3rd ring. The 3rd ring indicates that there are no new messages.