. The Bell System technical journal . ted at her position. The CAMA switchboard shown in Fig. 5 is acordless board of modern sheet metal design. The sixth group of functions ■— that of converting the data into thedesired form and perforating it on the paper tape — is performed jointlyl)y the transv^erter, the billing indexer, the recorder and the call identityindexer. The trans\erter is very similar to that used in local A]\IA. Itregisters the calling and called nimiber received from the sender, registersthe billing data received from the billing indexer and controls the re-corder in the perfo
. The Bell System technical journal . ted at her position. The CAMA switchboard shown in Fig. 5 is acordless board of modern sheet metal design. The sixth group of functions ■— that of converting the data into thedesired form and perforating it on the paper tape — is performed jointlyl)y the transv^erter, the billing indexer, the recorder and the call identityindexer. The trans\erter is very similar to that used in local A]\IA. Itregisters the calling and called nimiber received from the sender, registersthe billing data received from the billing indexer and controls the re-corder in the perforation of the initial entry. The billing indexer is strictly a translating circuit. It receives thecalling and called office codes and the customer rate class from the trans-verter and converts this information into a form which the transverteiand recorder can use. It provides a 1-digit billing index, which denotesthe charging plan to be used, and provides a type of initial entry indica- A LINK SENDERGROUP 3 -- SENDERGROUP 0 __. POSITION_^_ GROUP 9 POSITION _0_ GROUP 5 POSITION_M_ GROUP 4 POSITIONGROUP 0 CONTROLB Fig. 4 — Position link and control circuit. CENTRALIZED AUTOMATIC MESSAGE ACCOUNTING SYSTEM 1339
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
