5 star quality on these downloadable manuals. Easy to read and all the information is there. A must when doing a custom install or needing to service your precious old school electronics.
very helpful, the information in these manuels are very detailed
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.