AudioCodes Mediant 2000, Руководство пользователя

Страница: 337 / 418

Version 5.6 337 November 2008
SIP User's Manual 6. Auxiliary Configuration Files
•
Third Signal Off Time [10 msec]:
'Signal Off' period (in 10 msec units) for the
third cadence ON-OFF cycle. Can be omitted if there isn't a third cadence.
•
Fourth Signal On Time [10 msec]:
'Signal On' period (in 10 msec units) for the
fourth cadence ON-OFF cycle. Can be omitted if there isn't a fourth cadence.
•
Fourth Signal Off Time [10 msec]:
'Signal Off' period (in 10 msec units) for the
fourth cadence ON-OFF cycle. Can be omitted if there isn't a fourth cadence.
•
Carrier Freq [Hz]:
frequency of the carrier signal for AM tones.
•
Modulation Freq [Hz]:
frequency of the modulated signal for AM tones (valid
range from 1 to 128 Hz).
•
Signal Level [-dBm]:
level of the tone for AM tones.
•
AM Factor [steps of 0.02]:
amplitude modulation factor (valid range from 1 to 50.
Recommended values from 10 to 25).
Notes:
•
When the same frequency is used for a continuous tone and a cadence
tone, the 'Signal On Time' parameter of the continuous tone must have a
value that is greater than the 'Signal On Time' parameter of the cadence
tone. Otherwise the continuous tone is detected instead of the cadence
tone.
•
The tones frequency should differ by at least 40 Hz from one tone to
other defined tones.
For example, to configure the dial tone to 440 Hz only, enter the following text:
#Dial tone
[CALL PROGRESS TONE #1]
Tone Type=1
Tone Form =1 (continuous)
Low Freq [Hz]=440
High Freq [Hz]=0
Low Freq Level [-dBm]=10 (-10 dBm)
High Freq Level [-dBm]=32 (use 32 only if a single tone is
required)
First Signal On Time [10msec]=300; the dial tone is detected after
3 sec
First Signal Off Time [10msec]=0
Second Signal On Time [10msec]=0
Second Signal Off Time [10msec]=0
6.2 Prerecorded Tones (PRT) File
The Call Progress Tones (CPT) mechanism has several limitations such as a limited
number of predefined tones and a limited number of frequency integrations in one tone. To
overcome these limitations and provide tone generation capability that is more flexible, the
Prerecorded Tones (PRT) file can be used. If a specific prerecorded tone exists in the PRT
file, it takes precedence over the same tone that exists in the CPT file and is played instead
of it.
Note:
The Prerecorded tones are used only for generation of tones. Detection of
tones is performed according to the CPT file.