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1.16 Optional Device Features
Conditions
WARNING
When you enable the
a)Carefully maintain the secrecy of the PIN.
b)Specify a complicated PIN as long and random as you can make it.
c)Change the PIN frequently.
•Hardware Requirement:
•DISA Delayed Answer Time
It is possible to set the Delayed Answer time ( DISA Delayed Answer Time [209]) so that the caller will hear a ringback tone within a preprogrammed time period first before hearing an outgoing message (OGM).
•DISA Mute Time
It is possible to set the Mute time until the outgoing message (OGM) plays and the PBX starts to receive the DTMF signalling after the caller reaches the DISA line.
•Trunk-to-Trunk Call Duration
If a call between two outside parties is established, the call duration can be restricted by a system timer. ( 1.10.8 Trunk Call Limitation) If the timer expires, the line will be disconnected unless the originating caller retries by pressing "
" or extends the time by sending any DTMF signalling. The caller can prolong the call duration within the preprogrammed time period (
DISA
•Tone Detection
The following three types of tone detection can be enabled for each trunk group to disconnect a
–Silence Detection ( DISA Silence Detection [475])
–Continuous Signal Detection ( DISA Continuous Signal Detection [476])
–Cyclic Signal Detection ( DISA Cyclic Signal Detection [477])
•Call Retry
While hearing a ringback, reorder, or busy tone, retrying the call is possible by pressing "". During a
" is programmable: retry mode or DTMF mode.
•DISA Reorder Tone Duration
It is possible to set the DISA Reorder Tone Duration time. Reorder tone will be sent to the caller for a preprogrammed time period. When the timer expires the call will be disconnected. Retrying the call is possible by pressing "" during the DISA Reorder Tone Duration time.
•Call Deny
Extensions can deny DISA calls on a COS basis.
•Verified Code PIN Lock/Extension PIN Lock
If the wrong PIN is entered incorrectly three times, the line will be disconnected. If the incorrect PIN is entered a preprogrammed number of times successively, the PIN against