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American National Standard for Protocol Specification for Telephone Modem Communication


Status: Active
Document ID: 100356
ANSI C12.21-2006 (R2016)   [BUY]

Details the criteria required for communications between a C12.21 device and a C12.21 client via a modem connected to the switched telephone network. The C12.21 client could be a laptop or portable computer, a master station system or another electronic communications device.


Published Date: Mar.27.2017
Number of pages: 77
Document ID: 100356

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