scope:

This European Telecommunication Standard (ETS) defines the stage 1 of the Broadband Virtual Path Service for Reserved communications (BVPS-R) for a Broadband Integrated Services Digital Network (B-ISDN), as provided by European public telecommunication operators.

Part 1 of this ETS (ETS 300 455-1 [13]) defines the stage 1 of the Broadband Virtual Path Service for Permanent communications (BVPS-P) for a B-ISDN, as provided by European public telecommunication operators.

This ETS does not specify the additional requirements where the service is provided to the user via a telecommunication network that is not a B-ISDN, but it does include requirements for interworking of other networks with a B-ISDN.

This ETS is applicable to stage two and stage three standards for the BVPS-R. The terms "stage two" and "stage three" are also defined in CCITT Recommendation I.130 [4]. Where the text indicates the status of a requirement (i.e. as strict command or prohibition, as authorisation leaving freedom, or as a capability or possibility), this shall be reflected in the text of the relevant stage two and stage three standards.

Furthermore, conformance to this ETS is met by conforming to the stage three standards with the field of application appropriate to the equipment being implemented. Therefore, no method of testing is provided for this ETS.

Charging principles and management operations are outside the scope of this ETS.

The BVPS-R provides the transfer of unrestricted digital information between T_B or S_B/T_B reference points. It does not preclude the applicability of the BVPS-R to S_B.

The provision of the BVPS-R is based on the use of Asynchronous Transfer Mode (ATM) Virtual Path (VP) connections in a B-ISDN