Panasonic KX-NS1000, Manual

Page: 196 / 542

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End of Call Detection
If a call through DISA is routed to a trunk, DISA can be used to detect the end of the call. This function can
be disabled through system programming. If disabled, DISA is released when the trunk-to-trunk connection
is made.
The following three types of tone detection can be enabled for each trunk group to disconnect a
trunk-to-trunk call via DISA.
–
Silence Detection
→
11.1.1 PBX Configuration—[3-1-1] Group—Trunk Group—TRG Settings—Tone Detection—
DISA Tone Detection—Silence
–
Continuous Signal Detection
→
11.1.1 PBX Configuration—[3-1-1] Group—Trunk Group—TRG Settings—Tone Detection—
DISA Tone Detection—Continuous
–
Cyclic Signal Detection
→
11.1.1 PBX Configuration—[3-1-1] Group—Trunk Group—TRG Settings—Tone Detection—
DISA Tone Detection—Cyclic
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Trunk-to-Trunk Call Duration Limitation
For a call between two outside parties, even if end of call detection cannot be performed, the call can be
disconnected by a system timer. (
®
2.11.8 Trunk Call Limitation) If the timer expires, the line will be
disconnected unless the originating caller extends the time by sending any DTMF signalling. The caller
can prolong the call duration within the preprogrammed time period and preprogrammed number of times.
10.3 PBX Configuration—[2-3] System—Timers & Counters—DISA / Door / Reminder / U. Conf
→
DISA—CO-to-CO Call Prolong Counter
→
DISA—CO-to-CO Call Prolong Time
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Automatic DISA Activation
DISA can be set through system programming to automatically activate for the following types of
trunk-to-trunk call, to enable detection of the end of the call.
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When a trunk call is forwarded to another trunk
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When a trunk call is transferred to another trunk
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When a trunk call to an incoming call distribution group is answered by an outside destination member
Before the call is made, the PBX confirms that a DISA port is available. If no DISA ports are available, the
call is not routed to a trunk. For transferred calls or calls to an ICD Group, if the DISA port has become
unavailable when the trunk-to-trunk conversation is actually established, the call is established without
DISA.
When using this feature, the Trunk-to-Trunk Call Limitation timer should be enabled. In addition, prolonging
the call through DTMF signalling is not available.
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DISA Call Transfer from Outside Destination
An outside party such as a cellular phone can transfer a trunk call to an extension (including TIE) or an
outside party by pressing "#" + extension number (including TIE) or an outside party’s number, if DISA is
connected by the Automatic DISA Activation feature. This feature can be enabled or disabled through
system programming.
It is also possible to establish a Conference call (
®
2.14 Conference Features), perform Call Splitting
(
®
2.13.3 Call Splitting), and page with a call on hold to transfer the call (
®
2.17.1 Paging).
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DISA security mode should be set to No Security.
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If the called extension does not answer, is busy, or is in DND mode, the DISA Intercept feature operates.
–
The party on hold can use the Call Retry feature.
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If the destination trunk supports End of Call Detection, a paging call can be made after dialling "#".
–
If the transferred call is forwarded to another outside destination, COS settings are ignored.
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If the cellular phone’s number is registered in system speed dialling, its COS will be the COS of
the extension specified as the CLI destination.
•
If the cellular phone’s number is not registered in system speed dialling, its COS will be the COS
of the trunk that the transferrer is using.
196 Feature Guide
2.16.1 Direct Inward System Access (DISA)