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V.23

The V.23 standard is an interface standard for modems that operates at different speeds in the outward and return channels.

V.23 is a relatively old standard. It originates from the 60s and was developed at that time for the retrieval of online services. V.23 was used at T-Online; the transmission from the Datex-J computer to the user was at 1,200 bit/s, in the reverse direction at 75 bit/s. V.23 uses frequency shift ke ying (FSK) as the modulation method.

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Englisch: V.23
Updated at: 16.11.2018
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