1.3 Telephone FeaturesOperating Manual 73To return while others are talking1.3.33 Data Line SecurityYou can protect the line against audible notification tones, such as call waiting tones or hold alarm tonesduring a conversation. Set this feature if your extension has a data communication device such as acomputer or fax machine connected, to ensure secure data transmission.• CO-to-CO Line Call DurationThe length of outside-to-outside (CO-to-CO) line calls may be limited through systemprogramming.Both outside parties will hear a warning tone 15 seconds before a specified time limit.When the timer expires, the call is disconnected.The originating extension user will hear a ring tone or an alarm tone before the time limit.If the originating extension does not return to the conference within a specified time period,the unattended conference call will be disconnected.Programming Manual References[PT Programming]• [205] CO-to-CO Line Call Duration• [606] Call Transfer to CO Line[PC Programming]• 9.1.7 Timers [1-6]—Call Duration—CO-to-CO Duration Limit• 9.2.1 Main [2-1]—Transfer to COFeature Manual References• 1.1.34 Conference, UnattendedOperating Manual References• 1.3.31 Conference• 3.1.3 Flexible Button AssignmentCreate or edit a Conference button.PTPress the CO flashing green at moderate speed.(CO)
