ANSI NEMA C12.21:2006(R2023)
Current
The latest, up-to-date edition.
American National Standard for Protocol Specification for Telephone Modem Communication
Hardcopy , PDF
English
07-01-2024
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.
| DocumentType |
Standard
|
| Pages |
77
|
| PublisherName |
National Electrical Manufacturers Association
|
| Status |
Current
|
| Supersedes |
| ANSI NEMA C12.18:2006(R2023) | American National Standard for Protocol Specification for ANSI Type 2 Optical Port |
| ISO/IEC 7498-1:1994 | Information technology — Open Systems Interconnection — Basic Reference Model: The Basic Model |
| ISO/IEC 8825-1:2021 | Information technology — ASN.1 encoding rules — Part 1: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER) |
| ISO/IEC 13239:2002 | Information technology — Telecommunications and information exchange between systems — High-level data link control (HDLC) procedures |
| ANSI C12.18:2006(R2016) | American National Standard for Protocol Specification for ANSI Type 2 Optical Port |
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