States, one could place a call to a ship by dialing 1-800-High-Sea(s) (the corresponding number to the letter (S) was the 12th digit dialed before the pulse train could be completed and sent on the telephone network, so it was ignored by the switch in the central office of the station from which it was dialed). This toll free number led to a High Seas Telephone Operator in the IOC (International Operating Center) in Pittsburgh Pennsylvania, who would answer and take the details of the call, e.g., ship name, the name of the person being called and the name and phone number of the originator of the call. These call details were kept on file and the High Seas Telephone Operator would make a telephone call to the High Seas Radio Station, either WOO (Whiskey Oscar Oscar) in New Jersey or WOM (Whiskey Oscar Mike) in Florida or KMI (Kilo Mike India) in California. The High Seas Telephone Operators would give the High Seas Radio Technician the name of the ship that the party was trying to reach and the High Seas Radio Technicians were responsible to broadcast the traffic list on certain frequencies at regular times so that the Ship's Radio Technician could be notified that his particular ship was being hailed for the completion of a phone call to one of its passengers or crew members. After receiving the call details from the High Seas Radio Technician, the Ship's Radio Technician would make a ship-wide announcement paging the called party on the ship to come to the radio room on the ship to receive their call. When the person arrived in the radio room, the Ship's Radio Technician would hail the High Seas Radio Station on a predetermined frequency and would request a connection to the USA call originator. The High Seas Radio Station Technician would then call the High Seas Telephone Operator in Pittsburgh and request the call's completion. The High Seas Operator would retrieve the call details from the computer and connect the parties together. Since there was no "answer supervision" on these calls, they did not disconnect automatically. The High Seas Telephone Operators would monitor the call approximately every minute to listen for talking. If there was no talking when she or he went in on the line, the High Seas Telephone Operator would then ask the Ship's Radio Technician (who was also listening to