Specifications

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AS/CA S002:2010 COPYRIGHT
OCTOBER 2010
5.2.4 Bridging equipment
5.2.4.1
Bridging equipment, including line termination equipment in the
OFF-LINE state, is high impedance equipment connected in parallel
with the line terminating equipment. It does not provide an ON-LINE
termination. In general, it remains in the circuit irrespective of
whether the line terminating equipment is in the ON-LINE or OFF-LINE
condition. Usually it does not perform any line control function and is
used, for example, for monitoring and detecting incoming calls.
5.2.4.2 Bridging equipment shall have a modulus of impedance of greater
than 10 kΩ over the frequency range 300 Hz to 3400 Hz.
Compliance with Clause 5.2.4 should be checked by using the
method described in Clause 6.7.1.1
5.3 Functional requirements
5.3.1 Number storage facility
5.3.1.1
CE shall not be pre-programmed with, or default to, numbers
beginning with either ‘000’ or '106' in any storage location for
automatically dialled numbers, unless the functionality associated
with that automated dialling is specifically intended for establishing
a voice or TTY call as appropriate to an emergency call person.
5.3.1.2 CE should not be pre-programmed with, or default to, any network
recognisable number in any storage location for automatically
dialled numbers, unless the functionality associated with that
automated dialling is specifically intended for establishing a call to
that particular network number.
Note: ITU–T Recommendation E.164 [14] provides guidance to the
minimum digit storage required for national and international
numbers.
5.3.2 Interconnection of PSTN lines
5.3.2.1
The interconnection of PSTN lines shall be in accordance with the
requirements of AS/CA S003 [4] for conference bridges or Clause 5.7
of this Standard for ACTE.
5.3.2.2 Metallic interconnection of PSTN lines shall not be used.
Compliance with Clause 5.3.2 should be checked by inspection or
measurement as appropriate.
5.3.3 Intrusion tones
5.3.3.1
Any CE which provides for the connection of a third party into an
established conversation should provide to each party either of the
intrusion tones specified in Clause 5.3.3.2
—
(a) as soon as the intrusion facility is enabled; and
(b) with the addition of each new party to the connection.