12.1
External design
There are no formal Telecom requirements for the external design or appearance of any equipment, other than where the physical construction prevents compliance with:-
(a) the electrical safety requirements specified in PTC 101, or
(b) the performance requirements of this Specification.
12.2
Switches and connectors
All connectors, switches, keys, relays, etc., that are associated with a device, the operation of which depend on moving parts or physical contact, shall function reliably and positively at all times.
* Failure to do so can result in the false operation of network equipment which is liable to inconvenience other Telecom customers.
12.3
(2) In many cases, modifications are suggested by the Testing Authority to enable a product to comply with the test requirements of this and any other relevant PTC Specifications. Details of all such modifications shall be recorded as part of the Test Report for that product and a complete list of all modifications shall be furnished as part of the application.
* The detailed list of modifications may be incorporated in the test report or submitted separately with the Application Form.
(3) For each modification, the Applicant shall submit the following information in accordance with the above:-
(a) Technical details of the modification, indicating both the schematic changes and the physical implementation.
(b) Details of how the permanent modification is to be incorporated into production units. This shall include information on who will implement the modification.
(c) The parameters which the modification is intended to rectify.
Modifications
(1) Any interim or temporary modifications carried out prior to submission for testing shall be detailed by the applicant. This information shall be submitted to the Testing Authority, and shall also accompany the documentation submitted to Telecom in support of a Telepermit application.
* In some cases, modifications will be carried out by the manufacturer. In other cases, however, the modifications will be carried out after importation, and Telecom needs assurance that the quality of the modification work is satisfactory and reliable.
* The intention is to protect the Telecom Network (and personnel), suppliers and customers from manufacturers who modify units for compliance testing without later incorporating those modifications into all of their production units. Failure to carry out modifications could have implications for importers, distributors and retailers under the New Zealand consumer protection legislation.
(4) Upon application to Telecom for a Telepermit grant, Telecom will assess whether further tests will be required on production samples.
* Retesting may be necessary if the production implementation of a modification potentially impacts upon the compliance of some other parameter(s). For example, a modification to the circuitry in the vicinity of the Telecom line interface to comply with network requirements may also alter creepage distances between tracks and/or components, and thus possibly invalidate some of the test results against Specification PTC 101 for electrical safety.
12.4
(a) taken by the Testing Authority and included as part of the Test Report, or
(b) supplied by the Applicant, in which case they must be verified by the Testing Authority as authentic photographs of the product concerned.
Photographs
All Telepermit applications shall be accompanied by detailed colour photographs showing relevant internal construction details. These photographs may be either:-
* Relevant details would include circuit boards containing telecommunications functions, power supplies and any modifications which could affect compliance with PTC Specifications. Photographs are required only of assemblies which contain components likely to affect compliance with any PTC Specification.