Entry Topical Term

Number of records used in: 1

001 - CONTROL NUMBER

• control field: 15792

003 - CONTROL NUMBER IDENTIFIER

• control field: OSt

005 - DATE AND TIME OF LATEST TRANSACTION

• control field: 20250709023234.0

008 - FIXED-LENGTH DATA ELEMENTS

• fixed length control field: 250709|| aca||aabn | a|a d

040 ## - CATALOGING SOURCE

• Original cataloging agency: OSt
• Transcribing agency: OSt

150 ## - HEADING--TOPICAL TERM

• Topical term or geographic name entry element: Digital Telephone Systems

670 ## - SOURCE DATA FOUND

• Source citation: Work cat.: (OSt)5514: Bellamy, J. C. 2816, Digital Telephony, 2002