BS-6450-4 › Historical Revision Information
Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for ports

BS-6450-4 - 1993 EDITION - SUPERSEDED -- See the following: BS-7378-3
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Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Specification for ports


To find similar documents by classification:

33.040.30 (Switching and signalling systems Including telecommunication call charging and billing aspects)

33.040.35 (Telephone networks Including Public Switched Telephone Networks (PSTN), Private Telecommunication Networks (PTN) and Private Integrated Service Networks (PISN))

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Document Number

BS 6450-4:1993

Revision Level

1993 EDITION

Status

Superseded

Publication Date

Dec. 15, 1993

Page Count

134 pages