STARPLUS Starplus DHS-L, Technical Manual

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Tone/Inter-D igit Dur ati on 3-131
Chapt er 3 - Key Station Features, Opera tion, and Programming
Conditions
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Only one station is allowed to wait for the tone detector to become available.
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When the tone detector is currently assigned to a station, the maximum allowed time
to wait for CO dial tone is 6 seconds (default).
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If no CO dial tone is detected within 6 seconds, the tone detector will be returned to
idle, or assigned to another waiting station. The number entered will then be dialed.
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In the unlikely event that more than one station requests a tone detector at exactly
the same moment, those stations will hear internal busy tone immediately, although
a tone detector may be available.
Tone/Inter-Digit Duration
Description
Depending on the type ofCO, and the customer specialized dialing requirements, the
TONE TIME and INTER-DIGIT time may be modified for manually-dialed or system
automatically-dialed digits. Typically, no modification of tone/inter-digit duration is
required. However, in some installations where line conditions are poor, tone duration
and/or inter-digit duration timing may be increased to offset poor conditions. Tone
duration and inter-digit duration may be assigned any value (50 to 150 ms).
Programming
Timing can be adjusted such that dialing automatically emulates slow, methodical
depressions of the dial pad keys. Note: increasing the digit duration and inter-digit time
may also be desirable for applications where the user must dial into an off-site voice mail
system or other dial pad key operated device that does not respond well to faster dialing
modes. There are two Dialing Ratio parameters that may be programmed; TONE TIME
and INT_DGT TIME. Tone Time is the actual duration of DTMF tone that the system will
send for each dial pad key pressed while connected to a CO line. Int_Dgt Time is the
minimum actual time between DTMF digits that the system will wait before sending the
next dialed digit DTMF tone.
Default
The DHS-L TONE TIME = 90 msec) and INT_DGT TIME = 800 msec, and the adjustable
range is from 400 - 800 msec.
Conditions
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A longer tone duration or inter-digit duration time will cause a slower output of
manual or automatic system-dialed numbers.
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A longer DTMF ON time and/or inter-digit tone time can be used to ensure more
reliable interaction with remote voice mail and similar remote DTMF dial pad
actuated devices.
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Users may experience a delayed DTMF confirmation tone if the tone/inter-digit
duration is lengthened.