# The Telecommunications (Leased Lines) Regulations 1993, Schedule 2: DEFINITION OF A MINIMUM SET OF PRIVATE CIRCUITS WITH HARMONIZED TECHNICAL CHARACTERISTICS


The definition of the minimum set of private circuits to be provided by BT pursuant to paragraph 46A.1 of the conditions of the BT licence and by Hull pursuant to paragraph 48A.1 of the conditions of the Hull licence shall be as follows—
Technical Characteristics
Private Circuit type
Interface specifications
Performance specifications
(a) TSS (formerly CCITT) specifications and recommendations are published by the Telecommunications Standardization Sector (TSS) of the International Telecommunication Union. The relevant TSS recommendations are the 1988 versions.
Ordinary quality voice bandwidth
2 or 4 wire analogue
TSS M. 1040
Special quality voice bandwidth
2 or 4 wire analogue
TSS M. 1020 or M. 1025
64 kbit/s digital
TSS G. 703, X. 21 or X. 21(a)
Relevant TSS G. 800 series recommendations
2.048 kbit/s unstructured
TSS G. 703
Relevant TSS G. 800 series recommendations

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Source: https://www.legislation.gov.uk/uksi/1993/2330/schedule/2 (the official version)
Page: https://openlegislation.uk/telecommunications-leased-lines-regulations-1993/schedule-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.