PTC220 Requirements for Private Voice Networks …

1 1 PTC 220 July 2008 PTC220 Requirements for Private Voice Networks connected to the pstn /ISDN contents foreword 2 telecom disclaimer 3 1 Scope 4 2 General 7 3 Definitions 13 4 Transmission 14 5 FXS Requirements 28 6 FXO Requirements 41 7 FXD Requirements 57 8 System Specific (including IP)

2 Telephone Requirements 66 9 Voice Mail system Requirements 72 2 PTC 220 July 2008 foreword The purpose of this Specification is to ensure that the ITU-T Recommendations for overall end to end performance are satisfied when Private Voice Networks are connected to the Telecom network . This Specification covers the minimum technical Requirements for the grant of Telepermits for such connection. This Specification also covers a broad range of recommended parameters to assist those manufacturers who wish to exceed the stated minimum Requirements .

3 This Specification makes a clear distinction between these mandatory and voluntary performance Requirements . The coverage of this Specification includes the full range of Private Voice Networks from a simple single line FSO/FXS system to a large multi-node Private Voice network with multiple gateways into the pstn and ISDN. This Specification includes the definition of Requirements which ensure a reasonable expectation that Private network users will be able to make calls into, and receive calls from the Telecom network . This Specification includes provisions for key aspects only to be tested.

4 Other aspects affecting performance indirectly or in only a few network situations are not a part of the formal test requirement for the grant of a Telepermit. Nevertheless, for reliable operation under all circumstances, these additional aspects need to be complied with. Private Voice Networks are increasingly using packet technology to achieve cost savings by enabling Voice and data to be transported and switched by common equipment. The Voice performance of such Networks can be affected by network topology, network provisioning, and network loading, which are all outside the scope of a PTC Specification.

5 For the purposes of PTC testing, the equipment is configured in such a way that any degradation due to network design is minimised. It should be noted that in a real network implementation the performance can be no better than the results from the PTC tests. The Telepermit system requires that suppliers accept responsibility for the quality and reliability of their products. The granting of a Telepermit is not an acceptance of such responsibilities by Telecom, nor is it an endorsement of that product by Telecom. It is simply a public statement that the product concerned may be lawfully connected to the Telecom network .

6 Under New Zealand consumer legislation, suppliers have legal responsibilities to ensure that their products are suitable for their intended purpose. As such, they are responsible for ensuring that any conditions relating to the grant of a Telepermit are made known to their network designers, installers and customers. 3 PTC 220 July 2008 TELECOM disclaimer Telecom makes no representation or warranty, express or implied, with respect to the sufficiency, accuracy, or utility of any information or opinion contained in this Specification. Telecom expressly advises that any use of or reliance on such information is at the risk of the person concerned.

7 Telecom shall not be liable for any loss (including consequential loss), damage or injury incurred by any person or organisation arising out of the sufficiency, accuracy, or utility of any such information or opinion. The grant of a Telepermit for any item of terminal equipment indicates only that Telecom has accepted that the item complies with minimum conditions for connection to its network . It indicates no endorsement of the product by Telecom, nor does it provide any sort of warranty. Above all, it provides no assurance that any item will work correctly in all respects with another item of Telepermitted equipment of a different make or model, nor does it imply that any product is compatible with all of Telecom s network services.

8 4 PTC 220 July 2008 1 SCOPE Equipment covered This Specification covers the Requirements for Private Voice Networks which are connected as customer equipment to the Telecom pstn /ISDN. It is not technology specific, and is intended to cover traditional circuit switched PABXs as well as VoIP Networks and wireless technologies such as DECT. It replaces PTC207 and PTC217. Telepermits Telepermits will be generally be granted for complete systems network interface (FXO) and packet phones and/or analogue ports (FXS). Telepermits may be also granted for components of a system, but must be tested as a complete system (see Appendix 1), and where a component is granted a Telepermit, the other compatible component required to make up a complete functional system must also be Telepermitted.

9 Telepermits will generally be granted in the PTC220 series. Electromagnetic interference (EMI) Radiated energy Requirements (1) All equipment shall comply with the Radiocommunications Act 1989 and Radiocommunications (Radio) Regulations 1993 as regards radiated energy. These Requirements are administered by the Ministry of Ecconomic Development and responsibility for such compliance rests with the Telepermit applicant. Any microprocessor-based equipment is likely to give rise to unwanted radiation and it is advisable that this aspect be checked before any equipment is released onto the New Zealand market.

10 (2) Ministry of Economic Development compliance Requirements for EMC are not part of Telecom s Requirements and, as such, are not pre-requisites for the grant of a Telepermit. More information can be obtained from the Ministry s Website at (3) There is currently no formal Telecom requirement for the degree of immunity from electromagnetic fields other than where it affects compliance with other Requirements of this Specification. This is regarded as a marketing issue. Immunity from radiated energy It is strongly recommended that all devices satisfy the Requirements for immunity to radiated electromagnetic energy as stated in the joint Australian and New Zealand standard, AS/NZS 4252.