Any equipment that is connected to the telephone network must
have passed approval for use on that network. At its mostbasic
level this is simply safety testing; functional testing no
longer being part of the approval process.
Following the passing of approval testing the equipment will
be given an approvals number and can display the Green Circle
symbol to indicate that is has been approved. Equipment, which
has not been approved, must display the Red Triangle to show
it should not be connected to the network.
Network connection includes indirect connection via a PBX
or CRA therefore equipment connected to these systems must
also be approved either as part of the system or in its own
The approvals process will ensure that the equipment is safe
to be connected to the network and when in use will not interfere
with the network, other equipment and will not harm the users.
Whilst it is possible to purchase non-approved equipment in
the UK it cannot legally be connected to any part of the network.
There are penalties defined for contravention of the approvals
process. For telecommunications equipment which transmits
radio signals (cordless and pagers etc.) the penalties can
be more serious since their transmissions have been known
to interfere with aircraft and emergency services.
Manufacturers are not permitted to service equipment that
is unapproved for use in their country of operation even though
they may be selling it in another country under valid foreign
approval through an overseas office. Indeed regional differences,
especially in communications, may mean that they do not possess
the correct facilities to even check the foreign product lines
or have sufficient technical information.
Approval in the UK does not signify that the equipment may
be usable in other countries. Approvals for the UK are specific
to the UK marketplace. Equipment taken overseas will require
approval to the destination countrys standards before
it can be connected, in the same way as imported equipment
must be approved before use in the UK.
The elements of the approval of any equipment are essentially
the same, however different equipment types may require compliance
with specific additional requirements relating to its operation