Circuit Switched Data

Circuit -switched data transmission method in a mobile communications, in which a data connection from the mobile phone to a ( any ) is made remote. This compound is similar to a simple telephone call. In contrast, however, data at a speed of 14.4 kbit / s are transmitted (per channel). Due to an error control of transmission remain only 9.6 kbit / s for the user data. This corresponds to a throughput of 1.2 kbytes / s Current frequency modulation method can fully take advantage of s for data transfer, the 14.4 kbit / s. However, this occurs at the expense of error correction. CSD dominates any mobile telephone that has an internal modem.

An extension of CSD by bundling multiple GSM data channels represents HSCSD

Today, the packet- based data services GPRS, EDGE, UMTS and HSDPA are used instead of CSD increasingly the basis of which has long been the availability is reduced by CSD connections. Currently offer in Germany, only Telekom and Vodafone compounds new to. An Internet dial-up via CSD at Telekom is already no longer possible since 2008.

Telekom forum. Accessed on 18 December 2013. Teltarif article. Accessed on 18 December 2013.

  • Global System for Mobile Communications
  • Internet access
Mobile telephony High Speed Circuit Switched Data Universal Mobile Telecommunications System
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