GAI-Tronics PHP400 Manual de instalación y uso - Página 5
Navegue en línea o descargue pdf Manual de instalación y uso para Teléfono de emergencia GAI-Tronics PHP400. GAI-Tronics PHP400 20 páginas. Analogue version (1090/1099 series) with ampetronic hls-dm2 induction loop amplifier 230v ac power supply
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Line polarity reversal
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A line break (sometimes referred to as a "k break").
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Receipt of exchange call progress tones (see section 12 for specification)
Call timer
3.4.
The phone has a programmable call timer that can limit the maximum call duration.
When ON, the timer forces the phone back off line after the preset time. This prevents
the line remaining tied if the neither party ends the call. The timer is factory-set to 7mins
by default, but can be set to any value (up to 2¾hrs) or disabled. See section 7.2.1.
Semi Duplex Operation
3.5.
The Help Point is semi duplex, with automated switching between transmit and receive
depending on which signal is the stronger. It therefore requires an adequate signal
level to be able to switch into receive mode. This level may vary according to ambient
noise levels at the Help Point, but we would recommend ensuring that the incoming
signal level received at the Help point is at least -35dBm.
This level may have to increase if the ambient noise level at the Help point is high, and
in any event correct operation cannot be guaranteed in ambient noise levels exceeding
80dBA.
Semi duplex operation can also be affected if the impedance of the telephone line
differs significantly from the pan-European standard – see section 12.
SMART features
4.
This family of products has a wide range of intelligent features including:
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Monitoring of faults and health status
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Remote programming of auto-dial numbers and configuration parameters
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Alternate day / night autodial numbers
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Call logs for calls made to and from the telephones
These features are all available over standard, 2 wire telephone lines with no external
power required at the phone.
To use these features, GAI-Tronics provide a Telephone Management Application
(TMA) available separately, see section 7.3.
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Called Party Answered signalling (CPA), ie a reversal of line polarity when an outgoing call is answered, is
required to ensure accurate recognition of call connection and answer delay times. CPA is a telephone line
service and may not be available from all telecom service providers
PHP400 Analogue Help Point.
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