TONE DETECTOR PARAMETERS
These tables allow definition of the parameters required to detect the different types of tone on the NDDI, PCM, PCM2, EMTL, ACEM, GPA boards.
These parameters are used to detect the Dial Tone on the outgoing trunk, at the joining of trunks, in and telemarketing reception applications.
Remark:
Use for each type of detection
- Detection of dial tone:
DSPs of the board supporting the outgoing trunk or of a board of the same type: NDDI, PCM, PCM2, EMTL, ACEM.
- Detection of hook on of the calling party in ACD arrival on NDDI board:
DSPs of the NDDI boards.
- Detection of hook on of the calling party or of the called party for joining of trunks
DSPs of the NDDI boards
A detector will be allocated to trunk joining if at least one of the two trunks is of the type NDDI and if the parameters "Detection of Tone on busy signal at joining" is set to YES in the trunks of the two trunks concerned.
- For telemarketing calling:
DSPs of the GPA board.
Instance (reserved)
Dial tone
Attributes used by the GPA, NDDI, EMTL, and PCM boards
Presence timer
Time during which the dial tone must be detected correctly in order to be acknowledged.
Absence timer
Timer allowing micro cut-offs shorter than this timer value to be masked during tone detection.
Busy tone
Attributes used by the GPA, NDDI, EMTL, and PCM boards.
Number of periods (Busy tone)
Number of periods during which the busy tone must be detected in order to be valid. A period is made up of a pulse followed by a silence.
Minimal pulse timer (Busy tone)
Timer defining the minimum duration of the pulse of the busy tone.
Maximal pulse timer (Busy tone)
Timer defining the maximum duration of the pulse of the busy tone.
Minimal silence timer (Busy tone)
Timer defining the minimum duration of the silence of the busy tone.
Maximal silence timer (Busy tone)
Timer defining the maximum duration of the silence of the busy tone.
On-hook tone
Attributes used:
- by NDDI boards at ACD arrival
- by GPA boards for telemarketing departure
These attributes define the limit values for recognition of the tone received during hook on of the external user.
They can be identical or different from the values for detection of busy tone.
Number of periods (On-hook)
Number of periods during which the busy tone must be detected in order to be valid. A period is made up of a pulse followed by a silence.
Minimal pulse timer (On-hook)
Timer defining the minimum duration of the pulse of the busy tone.
Maximal pulse timer (On-hook)
Timer defining the maximum duration of the pulse of the busy tone.
Minimal silence timer (On-hook)
Timer defining the minimum duration of the silence of the busy tone.
Maximal silence timer (On-hook)
Timer defining the maximum duration of the silence of the busy tone.
Ringback tone
Attributes used by the GPA boards in telemarketing departure.
The Ringback tone period is generally long, approximately 1 s for pulses and 4 s for silence, i.e. 5 s for detection of Ringback tone.
Presumption of Ringback tone detection allows detection of the start of the Ringback tone pulse (Presumption timer) which enables a more rapid detection (generally approximately 800 ms).
Presumption timer
Timer after which the presumption of detection of Ringback tone is validated.
End of signal timer
In the case of non reception of an answer from the called party, this timer allows the end of the Ringback tone to be indicated. Its value must be greater than the silence time for Ringback tone.
Carrier tone
Attribute used by the GPA board.
Minimal presence timer
Minimum time during which the modem tone must be detected in order to be taken into account.
DSP filter 1 coefficients
These attributes do not concern the manager - Reserved for specialist only.
They are used by the GPA board.
They enable adaptation to the requirements of the different countries whose base tones are often different.
These attributes define the characteristics of the 2 DSP filters: gain, passband, selectivity, upper cut-off frequency, lower cut-off frequency.
(The other 4 DSP filters (1 filter for the 2100 Hz modem tone, 3 filters for the most common base tones) have no attributes (cannot be modified)).
DSP filter 2 coefficients
These attributes do not concern the manager - Reserved for specialist only.
They are used by the GPA board.
They enable adaptation to the requirements of the different countries whose base tones are often different.
These attributes define the characteristics of the 2 DSP filters: gain, passband, selectivity, upper cut-off frequency, lower cut-off frequency.
(The other 4 DSP filters (1 filter for the 2100 Hz modem tone, 3 filters for the most common base tones) have no attributes (cannot be modified)).