The present document specifies the technical requirements and test principles for the network interface presentations of
Open Network Provision (ONP) 64 kbit/s digital unrestricted leased lines with octet integrity. These presentations are
codirectional.
A connection is presented via interfaces at Network Termination Points (NTP). The present document defines the
network interface presented by the leased line provider and should be used in conjunction with the companion standard,
EN 300 289 [3], which specifies the connection characteristics between the NTPs of the leased line. Together, these
documents describe the service offered.
The present document is applicable to leased lines, including part time leased lines, whose establishment or release does
not require any protocol exchange or other intervention at the NTP.
The present document covers the physical, mechanical and electrical characteristics (except safety, overvoltage and
EMC aspects) of the network interface and specifies the conformance tests for equipment of the kind that provides the
interface presentation. Some of the tests described in the present document are not designed to be applied to the
interface of an installed leased line; such tests may be applied to equipment of the kind used to provide the interface.
The present document does not include details concerning the implementation of the tests nor does it include
information on any regulations concerning testing. There is no requirement for each leased line to be tested in
accordance with the present document before it is brought into, or returned into, service.