1.18 Proprietary Telephone (PT) Features
Feature Guide 127
[Button Usage]
Button Usage
Single-CO (S-CO) Used to access a specified CO line for making or receiving calls. (→
1.5.5.3 CO Line Access)
Group-CO (G-CO) Used to access an idle CO line in a specified CO line group for making
calls. Incoming calls from CO lines in the assigned CO line group arrive
at this button. (→ 1.5.5.3 CO Line Access)
Loop-CO (L-CO) Used to access an idle CO line for making calls. Incoming calls from any
CO line arrive at this button. (→ 1.5.5.3 CO Line Access)
Direct Station Selection (DSS) Used to call an extension with a one-touch operation. (→ 1.5.3 Intercom
Call)
One-touch Dialing Used to call a preprogrammed party or access a feature with a one-
touch operation. (→ 1.6.1.2 One-touch Dialing)
Group Directory Number (G-
DN)
Used to access a specified incoming call distribution (ICD) group for
making or receiving calls. (→ 1.2.2.1 Incoming Call Distribution (ICD)
Group Features—OVERVIEW)
Message Used to leave a Message Waiting indication or call back the party who
left the Message Waiting indication. (→ 1.17.1 Message Waiting)
FWD/DND (External/Internal/
Both)*
Used to set the FWD or DND feature for the extension. The feature is
applied to CO line calls, intercom calls, or both. (→ 1.3.1.1 Call
Forwarding (FWD)/Do Not Disturb (DND)—OVERVIEW)
Group FWD (External/Internal/
Both)
Used to set the FWD feature for a specified ICD group. The feature is
applied to CO line calls, intercom calls, or both. (→ 1.3.1.1 Call
Forwarding (FWD)/Do Not Disturb (DND)—OVERVIEW)
Account Code Entry (Account) Used to enter an account code. (→ 1.5.4.3 Account Code Entry)
Conference Used to establish a multiparty conversation. (→ 1.13.1.2 Conference)
Terminate Used to disconnect the current call and make another call without
hanging up. (→ 1.10.5 Flash/Recall/Terminate)
External Feature Access (EFA) Used to send a flash/recall signal to the telephone company or host
PBX to access external features. (→ 1.10.6 External Feature Access
(EFA))
Call Park Used to park or retrieve a call in a preset PBX parking zone. (→ 1.12.2
Call Park)
Call Park (Automatic Park
Zone)
Used to park a call in an idle PBX parking zone automatically. (→ 1.12.2
Call Park)
Call Log Used to show a log of received calls. (→ 1.16.2 Incoming Call Log)
Log-in/Log-out* Used to switch between Log-in and Log-out status. (→ 1.2.2.6 Log-in/
Log-out)
Hurry-up Used to redirect the longest waiting call in the queue of an ICD group to
the overflow destination. (→ 1.2.2.3 Queuing Feature)
Wrap-up* Used to switch between Wrap-up/Not Ready and Ready modes. (→
1.2.2.6 Log-in/Log-out)
System Alarm Used to display a PBX error. (→ 2.4.3 Local Alarm Information)
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