scope:

This ETS specifies the full physical and electrical characteristics, the necessary functional characteristics and the corresponding test principles for a terminal equipment interface for connection to the Network Termination Points (NTPs) of Open Network Provision (ONP) 2 048 kbit/s digital structured leased lines which support an unstructured 1 984 kbit/s information transfer rate using 120 Ω interfaces.

This ETS is not intended for regulatory purposes. A separate TBR (TBR 13) covers the essential requirements for attachment under the Second Phase Directive (91/263/EEC).

This ETS is to ensure that the interface of the terminal equipment is compatible with the ONP 2 048 kbit/s digital structured leased line. A terminal equipment interface that conforms to this ETS will also be compatible with an ONP 2 048 kbit/s unstructured leased line. This ETS is applicable to all interfaces designed for connection to the leased line, however in the cases of apparatus that carries a particular service, of complex apparatus and of apparatus in private networks, other ETSs may apply in addition to this ETS.

Customer premises wiring and installation between the terminal equipment and the NTP are outside the scope of this ETS.