Manual / Guide
"All-Relay" Private Automatic Exchange — North Electric
1 p
Manual / Guide
1 p
THE NORTH ELECTRIC MFG. CO. GALION, OHIO Manufacturers of High Grade Telephone Equipment Since 1884 PRODUCTS Private Automatic EXCHANGES. “ALL-RELAY” SwitcuiInc EquirMEN’s. AUTOMATIC SIGNALING SYSTEMS. City ExcHancres—all types. AUTOMATIC TELEPHONE DIALS. Direcr CurrENT RELAYS. SELF-REGULATING RECTIFIERS. REMOTE CoNTROL—AUTOMANUAL, Hand Telephone THE NORTH “ALL-RELAY” PRIVATE AUTOMATIC EXCHANGE This is an intercommunicating telephone system de- signed for installation in business offices, factories, hos- pitals, schools, etc., where it renders rapid, reliable and secret service 24 hours a day without an operator. It is a private system which has no connection with the public telephone system. Standard dial type telephones are used, which are available in all types and many colors. The wiring system is of the simplest. A single pair of wires only is required from each telephone to the central exchange equipment, thereby making an eco- nomical plant permitting of easy change and expansion at low cost. “All-Relay” Construction North “All-Relay” equipment is composed solely of small solidly constructed relays, each comprising only a magnet, a hinged armature, and a group of contact springs. These relays connect with the calling line, register the impulses from the dial, choose the wanted line, test, ring, and perform all the functions of an operator at a manual switchboard. This “All-Relay” equipment is entirely devoid of the wipers, shaits, gears, ratchets, pawls, latches, coil springs and other like parts of which all selector-type automatic systems are composed and does not require the delicate adjustment, frequent readjustment, cleaning and lubricating common to such selector systems. Routine maintenance is thereby entirely eliminated. Operation To make a call, simply lift the receiver and dial the required number—the exchange does the rest. The called party’s bell is rung instantly and repeated inter- mittently until the call is answered or abandoned. The ring is indicated to the calling party by a distinct sig- nal in the receiver. When the call is answered, ring- ing is immediately stopped and the line cleared for conversation. Models Standard models of “All-Relay” Private Automatic Exchanges are available in 10, 30, 60, 100 and 1000- line capacities. Other sizes and models furnished when required. Auxiliary Features Code Call—Two-party service—Executive Right of Way — Conference — Fire Alarm — Departmental — Watchman’s Service. SERVICES We offer the assistance of our A complete sample specification will Engineering Organization without be furnished on request together with obligation to you in planning our recommendations for the equip- your requirements. ment necessary to mect your conditions. 30-Line “All-Relay” Private Automatic Exchange