STERLING TELEPHONE AND ELECTRIC Co. Ltd
AUTOMATIC REPLY AND CALL BATTERY RINGING
No. U 505
Reply and Call Wall Telephone, fitted with Standard Pattern Hand Combination (No. U 175 ), Call Bell, etc.
The "Sterling" Automatic Reply and Call System has been designed for cases where it is not desirable or convenient to
use a Central Station Annunciator Switchboard. It is, generally speaking, most useful where the Principal wishes to call all the
outer offices, and vice versa.
Last revised: April 28, 2021