BS-6789-2 | Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators. Specification for apparatus with loudspeaking facilities | Document Center, Inc.

BS-6789-2 › Complete Document History
Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators. Specification for apparatus with loudspeaking facilities

Obsolete Revision Information:

AMD 4659 - AMENDMENT 1 - July 1, 1984
1984 EDITION - WITHDRAWN, 8/2/2013 - March 30, 1984