TIME AND MONEY SAVING FACILITIES

FURNISHED BY THE

KEYSTONE TELEPHONE SYSTEM


ADVERTISING SPACE IN DIRECTORIES
Keystone Red Books.
AUXILIARY LINES AND STATIONS
Additional lines for incoming and outgoing service and for private calls.
BELLS
Auxiliary bells, large or small.
Relay controlled bells.
BOATS TELEPHONE SERVICE ON
Telephone sets and P. B. X. systems on vessels with jack and plug connecting Exchanges while at wharf.
BOOTHS
Rented and sold for telephone privacy in banks, brokers' or noisy offices.
BREAST TRANSMITTER SETS
For operators on P. A. B. X., P. B. X. turrets, or where extended use requires same.
BUZZERS
Buzzer systems for signalling telephones, for code call purposes or conference use.
CALL THROUGH TRUNKS
Connection by P. A. B. X. whereby city calls can be extended through to party wanted without aid of operator.
CONFERENCE SYSTEM
P. A. B. X. dialing of department chief for conference.
Buzzer systems for conference call on lines with extensions.
P. B. X. hook-up of certain stations for conference.
CORDS, EXTENSION
Longer cords than standard.
Drop cords over desks.
CUSTOMER'S BOARD
Special customers often called connected by direct lines to special board in grocery or hardware, jobbers, brokerage, blue printers houses, architects, etc.
DEPARTMENTAL SELECTION
Automatic telephone pick-up of departments, bookkeeper, purchasing agent or order clerk, for jobbing houses, banks, etc.
DIRECTORY LISTINGS
Alphabetical, classified, out-of-town listings, listing of firms' members, extra listings, extra users' listings, night and Sunday reference.
Extra business classification.
Advertising listings.
Salesmen's name listings.
ELEVATOR TELEPHONES
For operators of cars.
For starters.
EXECUTIVE RlGHT OF WAY
Executives can secure party wanted by automatically cutting off parties talking.
EXTENSION TELEPHONES
Business, residence, P. A. B. X., P. B. X., intercommunicating sets.
Outlying sets with mileages, desk, wall.
HAND GENERATORS MAGNETO
Private lines or for broadcasting lines.
INTERCOMMUNICATING SYSTEMS
All sizes, isolated or connected to city service.
JACK AND PLUG EQUIPMENT
For ships, hospitals, hotels, offices, or factories where portable telephone or targets are used.
KEY BOXES
With or without larnp signals.
KEYS, SWITCHING
For switching off extension set.
For switching to auxiliary lines.
For holding line while extending call.
LONG DISTANCE TRUNK LINES
Direct lines to long distance switchboard for large users.
NIGHT SERVICE SWITCHBOARD
Auxiliary switchboards connected through to watchman or engineer for night service.
ORDER TABLE SWITCHBOARD
Department stores, sales, organizations.
OUTDOOR TELEPHONE SERVICE
Highway boxes for motorists, automobile clubs, police and fire alarm systems.
PAGING SYSTEMS (SIGNAL TYPE)
In connection with private automatic exchanges only—using bells, horns and whistles.
PAY STATION REVERSE CALL
Reversed calls for salesmen and customers' calls for reporting or purchasing goods.
PLANS, WlRING
Circuits arranged to extend calls, cut out certain stations, on line holding circuits, etc.
PRIVATE AUTOMATIC BRANCH EXCHANGE (P. A. B. X.)
All sizes, 10 to 1000 lines, automatically operated. With or without operator for city calls, privately maintained or company maintained, sold or leased, has unlimited possibilities, dials individuals direct, codes or pages, has call through feature, contains conference's system, executive right of way; can operate fire, or watchman's service, telechec for use in theatres, etc.
PRIVATE BRANCH EXCHANGE (P. B. X.)
All sizes.
Operated manually either local or city service for all places requiring more than direct line services.
P. B X. (OPERATORLESS SYSTEMS)
Intercommunicating telephones without use of operators.
PRIVATE LINES AND EQUIPMENT
Magneto or central office lines requiring no generator.
RADIO LINES
Broadcasting lines and remote contral, circuits.
RECEIVERS
Watchcase receiver, single or in pair with or without head band.
Special receiver for deaf persons.
REPORTING "IN AND OUT" SYSTEMS
For salesmen, etc., reporting purposes.
SECRETARIAL SERVICE
For business or professional men, lines furnished to existing bureaus.
SELLING BY TELEPHONE CAMPAIGNS
Batteries of telephones for campaigning for sales, sampling, news subscriptions, charity advertising, etc.
SPECIFICATIONS
Architects' specifications for P. B. X. or P. A. B. X. layout.
STOCK EXCHANGE LINES
Official stock exchange switchboard connections.
SUBMARlNE CIRCUITS
Lines giving unlimited service to Camden or for private line purposes.
TARGETS
Indicator showing city trunk line requiring answers.
TELEGRAMS, CHARGED ON TELEPHONE BILL
Via Postal or Western Union, all parts of the world are reached by sending telegrams from our telephones.
TRADERS' BOARDS
Traders' transactions, stock and bond houses.
TRAFFIC SURVEYS
Survey contains complete details and report of telephone service available to subscribers or non-subscribers in Philadelphia.
TRANSMITTER CUT OUTS
For desk sets in places where noise blurs the voice.
VAULT TELEPHONES
For "shut in" emergencies or communications regarding contents of vaults.
VISIBLE SIGNALS
Lamp indicator for answering of calls from city.
WIRING PLANS OF BUILDINGS
Architects' plans for buildings involving conduits or cable.

If you have any communication or signalling problems, Keystone Engineers can help you

Telephone Race 06 or Write

KEYSTONE TELEPHONE SYSTEM

135 South 2nd Street, Philadelphia

"When the Keystone rings, It's BUSINESS"

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