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10.9 PBX Configuration—[2-9] System—System Options
Value Range
1–12
Feature Guide References
2.20.1 Message Waiting
Whisper OHCA—for SLT
Enables the use of Whisper OHCA to SLTs and IP-PTs
Value Range
Disable, Enable
Feature Guide References
2.10.4.4 Whisper OHCA
Call Waiting—Automatic Call Waiting for Extension Call
Selects whether Busy Station Signalling (BSS) is automatically performed when an extension user calls a busy
extension.
Value Range
Disable, Enable
Feature Guide References
2.1.3.3 Call Waiting
Busy Out—Busy Out for Analogue CO
Enables the PBX to automatically set a trunk to Busy Out status when a loop current is not detected, preventing
that trunk from being used.
Value Range
Disable, Enable
Feature Guide References
2.5.4.6 Trunk Busy Out
ISDN Voice Path Connection—Connect when "Alert" is sent from ISDN
Enables the voice path of an ISDN line to connect even when an "Alert" signal is received from the telephone
company.
Value Range
Disable, Enable
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