Business TeleCommunications (BTC); Multiple 64 kbit/s Digital Unrestricted Leased Lines with Octet Integrity Presented at a Structured 2 048 kbit/s Interface at Either or Both Ends (D64M); Connection Characteristics and Network Interface Presentation
"This European Telecommunication Standard (ETS) specifies the technical requirements and test principles for the connection characteristics and network interface presentations of a 64 kbit/s point-to-point digital unrestricted leased line with octet integrity that is provided between either: - two 2 048 kbit/s structured network interfaces; or - a 2 048 kbit/s structured network interface and a 64 kbit/s co-directional network interface. More than one leased line of the type described in this ETS may be provided at any 2 048 kbit/s network interface. Such leased lines may connect to the same or different destinations. This ETS is written as a ""delta"" document based on the following ETSs: - ETS 300 288: ""Business TeleCommunications (BTC); 64 kbit/s digital unrestricted leased line with octet integrity (D64U); Network interface presentation"". [1] - ETS 300 289: ""Business TeleCommunications (BTC); 64 kbit/s digital unrestricted leased line with octet integrity (D64U); Connection characteristics"". [2] - prETS 300 418: ""Business TeleCommunications (BTC); 2 048 kbit/s digital unstructured and structured leased lines (D2048U and D2048S); Network interface presentation"". [3] - prETS 300 419: ""Business TeleCommunications (BTC); 2 048 kbit/s digital structured leased lines (D2048S); Connection characteristics"". [4] This ETS 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 Network Termination Point (NTP). This ETS covers the connection characteristics@ and the mechanical and electrical characteristics of the network interface@ and specifies conformance tests. Some of the tests for the interface presentation described in this ETS 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. This ETS 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 this ETS before it is brought into@ or returned into@ service (One cannot express a requirement or a non requirement in the scope)."