Specifications

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AS/CA S002:2010 COPYRIGHT
OCTOBER 2010
5 REQUIREMENTS
5.1 General
5.1.1 Fail-safe operation
5.1.1.1
CE shall not cause harm or damage to a Telecommunications
Network or Facility if any of the following events occur:
(a) Failure of any mechanical or electrical component in the CE.
(b) Failure of any power supplies resulting in total or partial loss of
power to the CE.
(c) Discharge or partial discharge of any battery supply
associated with the CE.
(d) Incorrect manual operation of the CE.
5.1.1.2 CE should not cause harm or damage to a Telecommunications
Network or Facility when CE is operated outside the range of
operating voltage and environmental conditions specified by the
manufacturer.
5.1.1.3 The power fail mechanism of the CE should cause the CE to revert to
the OFF-LINE condition and remain in that condition for the duration
of the failure. In addition, the CE may incorporate an automatic line
change-over facility as a response to power failure.
5.1.1.4 On restoration of power after a power failure, the CE shall remain in
the OFF-LINE condition until another call sequence is commenced.
This requirement applies following the first 30 seconds after power is
restored.
Compliance with Clause 5.1.1 should be checked using the method
described in Clause 6.3.
5.1.2 Line polarity
5.1.2.1
The operation of CE shall be independent of exchange line
conductor polarity.
5.1.2.2 CE shall be unaffected by—
(a) a permanent line reversal; or
(b) a short term line reversal of 40 to 200 ms;
which occur while the CE is in either the OFF-LINE or the ON-LINE
states.
Compliance with Clause 5.1.2 should be checked by applications of
polarity reversals.