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ČSN is a protected designation of Czech national technical standards.
Attachments to the Public Switched Telephone Network (PSTN). Category II attachment requirements for 300 bit/s duplex modems standardized for use on the PSTN
Standard published on 1.6.1995
Selected format:Public Switched Telephone Network (PSTN) - Category II specification for 300 bit/s duplex modems standardized for use on the PSTN
Standard published on 1.9.1998
Selected format:Public Switched Telephone Network (PSTN). Category II specification for 1 200 bits per second duplex modems standardized for use on the PSTN
Standard published on 1.2.1997
Selected format:
WITHDRAWN published on 1.6.1995
Selected format:Public Switched Telephone Network (PSTN). Category II specification for 2 400 bits per second duplex modems standardized for use on the PSTN
Standard published on 1.2.1997
Selected format:
WITHDRAWN published on 1.6.1995
Selected format:Public Switched Telephone Network (PSTN) Category II specification for 1 200 bits per second half duplex and 1 200/75 bits per second asymmetrical duplex modems standardized for use on the PSTN
Standard published on 1.2.1997
Selected format:
WITHDRAWN published on 1.6.1995
Selected format:Attachment requirements for Data terminal equipment to connect to Packet Switched Public Data Networks using CCITT Recommendation X.25 (1984) interface. Requirements applicable to DTEs subscribing to Link Access Procedure Balanced (LAPB) extended (modulo 128) operation
Standard published on 1.6.1995
Selected format:Attachment requirements for Data Terminal Equipment (DTE) to connect to Packet Switched Public Data Networks (PSPDN) using CCITT Recommendation X.25 (1984) interface. Requirements applicable to DTEs subscribing to Multilink operation
Standard published on 1.6.1995
Selected format:Latest update: 2026-02-01 (Number of items: 2 258 192)
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