Multi-line telephone Five-line x 24-character display Two line/feature keys, up to 4 lines with Shift mode Four context-sensitive feature keys Fixed feature keys: Hold, Goodbye, Volume Control, "Smart ...

Though Joseph Henry earned his fame as the first director of the Smithsonian Institute, he was in many ways the telephone's first and best advocate. Alexander Graham Bell himself said as much when ...

Abstract: The new telephone instruments now being introduced by the Bell System result in an outstanding improvement in transmission performance in service. The evidence for this, as obtained by ...

Abstract: In No. 2 ESS modern telephone features are provided by concise call processing programs, which make extensive use of subroutines. This paper discusses the features to be available with the ...