General Features
270 Features Guide
Conference, Unattended
Description
A PT user who originated a conference call with two outside parties can leave the conference
for a while to allow the other two parties to continue conversation. This is called an Unattended
Conference. The conference originator may return to the conference, if desired.
Conditions
• Class of Service (COS) programming
An Unattended Conference cannot be established unless the extension is allowed to transfer
a call to an outside party by COS programming <Section 2.4 Class of Service (COS),
"Transfer to CO" in the Programming Guide>.
• Limited call duration
The duration of an unattended conference is restricted by a system timer.
Hold Recall tone:
Hold Recall tone is sent to the extension user who left the conference 50 seconds before the
time-out.
Hold Alarm tone:
An alarm tone is sent to both outside parties three times at 5-second interval 15 seconds
before the time-out. The call is disconnected at the time-out unless the extension who
originated the Unattended Conference returns to the call.
• CONF (Conference) button
If a CONF button is not provided on a PT, it can be assigned to a flexible (CO, DSS, PF)
button by Station, User or System Programming.
Programming Guide References
• 2.4 Class of Service (COS)
– Trunk Group Setting
– Transfer to CO
•2.5SystemTimer
– CO-to-CO Line Call Duration Time
• 4.3 Extension Line
–COKey
–PFKey
• 4.4 DSS Console
–DSSKey
–PFKey
Features Guide References
1.3 System Features
• Limited Call Duration
1.12 Conversation Features
• Conference, 3-Party
