NEC UNIVERGE UM8000 User Manual page 463

System > Switch > Dialogic Settings
Field
Call Analysis Delay
Ring to begin on
Debounce silence
Voice
Leading edge detect
Tolerance above 1st low
%
Below 1st low %
Tolerance above 2nd
low %
Below 2nd low %
Tolerance above 1st
high %
Below 1st high %
Max short in dbl ring
Min long low
Max time busy
Max time busy 1st low
Max time busy 2nd low
Busy states over rings
Size of long high
Max sil. long
Short
Page Field Descriptions
Description
Defines the amount of time, in centiseconds, that the
messaging system will pause before attempting to detect a
signal pattern on the phone line.
Specifies the number of signal patterns the messaging
system will ignore before attempting to identify the incoming
signal.
Specifies the minimum length of silence, in centiseconds,
that must be detected before the system observes a
- -
high to low change of state.
Specifies the minimum length of nonsilence that must be
detected before the system observes a low
of state.
Select the enable leading edge detect.
The three sets of tolerance levels correspond to the
variations in two low states and one high state of a signal
pattern definition. Expressed as a percentage of the length of
the high or low state, the tolerance level defines the margin
of error for the signal.
For example, if Tolerance above were set to 5 and Below
set to 6, any signal between 94% and 105% would be
considered a valid signal.
Very small tolerance levels make call progress quick, but
some signals might be incorrectly read.
Large tolerance levels, the messaging system responds to
signals that are not as accurate, but slows call progress.
Very large tolerance levels might allow a human voice to be
interpreted as a valid signal.
The maximum length, in centiseconds, that the messaging
system allows for the period of silence between two rings
that make up a double ring on phone systems that use a
double ring.
The minimum length, in centiseconds, that the messaging
system allows for the long period of silence between two
double rings on phone systems that use a double ring.
The maximum length, in centiseconds, that the messaging
system allows for each of the low segments and the high
segments of a busy signal.
The maximum length, in centiseconds, that the messaging
system allows for the first low segment of a busy signal.
The maximum length, in centiseconds, that the messaging
system allows for the second low segment of a busy signal.
The number of busy patterns more than the number of
ringback patterns the messaging system must detect before
determining that the phone it is calling is busy.
The length, in centiseconds, used to determine if the phone
system is sending a double or single ringback signal.
If a nonsilence signal is not heard within this time, the
messaging system assumes the ringback signal has been
interrupted and continues call progress.
If the length of the first nonsilent period is less than the size
of long high, a double ringback signal is assumed and the
messaging system only listens for the next period of
nonsilence up to the length specified in Short. Lengths
specify centiseconds.
- -
to high change
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