Actually, I was looking for this information for 3 years!...now thanks to you, the manual is on my hands and of great help, cause I understand now where I was doing wrong connections and wires...excellent, I'll be back to you if in need, thank you.
This manual covers the main equipment features only. While it also includes the procedure for saving and loading from the now long obsolete memory cards it does not mention the how to operate with the optional floppy drive interface so I am still at a loss about how to use this! Note that there is a separate manual covering the MIDI interface and programming via the keyboard, not included in this download. You will also need to get hold of this if you want to use the MIDI interface properly. Basically there is little difference between this manual and the free to download manual for the similar PR60 model.
The manual was properly scanned and perfectly readable. The only small problem is that I couldn't use my dear Ctrl + F to find a word I needed.
Text excerpt from page 63 (click to view)
2.4 During a Conversation
To return
PT
While hearing alert ringing While the others are talking
OR
(CO)
(CO)
Off-hook or press CO.
Press CO.
�
�
Time limit Both parties will hear an alert tone fifteen seconds before the time limit (Default: 10 min.) runs out. The original extension will hear an alert tone fifty seconds before the time runs out. The call is disconnected when the time runs out unless the original extension returns to the conference. This feature is not available for an ISDN telephone user. � 4.1.3 Customising the Buttons Create or re-arrange a Conference button.