Panasonic KX-TDA50 Feature Manual page 81

The following three types of tone detection can be enabled for each trunk group to disconnect a CO-to-
CO line call via DISA.
– Silence Detection
→ 2.9.1 [3-1-1] Trunk Group—TRG Settings—Main—DISA Tone Detection—Silence
→ [475] DISA Silence Detection
– Continuous Signal Detection
→ 2.9.1 [3-1-1] Trunk Group—TRG Settings—Main—DISA Tone Detection—Continuous
→ [476] DISA Continuous Signal Detection
– Cyclic Signal Detection
→ 2.9.1 [3-1-1] Trunk Group—TRG Settings—Main—DISA Tone Detection—Cyclic
→ [477] DISA Cyclic Signal Detection
• CO-to-CO Line 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. (→ 1.3.15 CO Line 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.
2.8.4 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf
→ DISA—CO-to-CO Call Prolong Counter
→ DISA—CO-to-CO Call Prolong Time
→ [210] DISA CO-to-CO Line Call Prolong Time
• Automatic DISA Activation
DISA can be set through system programming to automatically activate for the following types of CO-
to-CO line calls, to enable detection of the end of the call.
– When a CO line call is forwarded to another CO line
– When a CO line call is transferred to another CO line
– When a CO line call to an incoming call distribution group is answered by an outside destination
member
2.11.3 [5-3-1] Voice Message—DISA System—Option 1
→ CO-CO with DISA—Fwd/Transfer to Public CO
→ CO-CO with DISA—Fwd/Transfer to Private Network
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 CO line. For transferred calls or calls to an ICD Group, if the DISA port has
become unavailable when the CO-to-CO line conversation is actually established, the call is established
without DISA.
When using this feature, the CO-to-CO Line Call Limitation timer should be enabled. In addition,
prolonging the call through DTMF signalling is not available.
• DISA Call Transfer from Outside Destination
An outside party such as a cellular phone can transfer a CO line call to an extension at the PBX by
pressing "#" + extension number, if DISA is connected by the Automatic DISA Activation feature. This
feature can be enabled or disabled through system programming.
2.11.3 [5-3-1] Voice Message—DISA System—Option 1
→ CO-CO with DISA—Transfer by DTMF "#" (Optional SD Card Required)
→ CO-CO with DISA—Return to DISA Top Menu by DTMF "*"
– The KX-TDA6920, KX-TDA0920 or KX-TDA5920 SD Memory Card for Software Upgrade to
Enhanced Version is required to use this feature.
– DISA security mode should be set to No Security or CO Line Security.
– 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.
1.4 D
Feature Manual 81