HSCSD, or High Speed Circuit Switched Data, is an upgrade to the existing Time Division Multiple Access (TDMA) cellular phone system. HSCSD (High Speed Circuit Switched Data) is a specification for data transfer over GSM networks. HSCSD utilizes up to four Kb or Kb time slots, for a. High-Speed Circuit-Switched Data (HSCSD), is an enhancement technlogy of Circuit Switched Data (CSD), the original data transmission mechanism of the.

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This enables internet access at the same speed of many dial-up modem services across fixed line networks. Please add a reason or a talk parameter to this template to explain the issue with the article. The user is then charged, often at a rate higher than a normal phone call, and sometimes multiplied by the number of time slots allocated, based on the period of time that the user has a connection active.

WikiProject Telecommunications may be able to help recruit an expert. It requires the time slots being used to be fully reserved to a single user. Unsourced material may be challenged and removed. Even given preemption, it is difficult to see how HSCSD can be deployed in busy networks and still confer an agreeable user experience- i.

HSCSD operates across a GSM network, and therefore no extra hardware is required by a mobile communications operator to offer the service, just a network software upgrade. New forum topics Freelance Cigcuit for Telecom engineers Are you looking for a project based Freelance engineer job?


Please help improve this article by adding citations to reliable sources. Bluetooth Bluetooth is an alliance between mobile communications and mobile This allows an increase in maximum transfer rates using four time slots up to It is possible that either at the beginning of the call, or at some point during a call, it will not be possible for the user’s full request to be satisfied since the network is often configured to allow normal voice calls to take precedence over additional time slots for HSCSD users.

Circuit Switched Data

This is because the user of an HSCSD connection does not have to wait for permission from the network to send a packet. Prior to CSD, data transmission over mobile phone systems was done by using a modem, either built into the phone or attached to it. HSCSD is therefore more likely to be deployed in start up networks or those with plenty of spare capacity- since it is relatively inexpensive to deploy and can turn some spare channels into revenue streams.

Skip to main content. By using this site, you agree to the Terms of Use and Privacy Policy. Who’s online There are currently 0 users online. This page was last edited on swiitched Juneat Views Read Edit View history. Such systems were limited by the quality of the audio signal to 2. This speed makes it comparable to many fixed-line telecommunications networks and will allow users to access the Internet and other datacom services via a GSM network.

February Learn how and when to remove this template message. CSD uses a single radio time slot to deliver 9. This article does not cite any sources. In HSCSD, users are allocated multiple slots so that the transmission speed can be drastically increased, with some service providers offering rates of up to Create new account Request new password.


Swigched of mobile phone generations. Higher speeds are achieved as a result of superior coding methods, and the ability to use multiple time slots to increase data throughput.

GSM TS – HSCSD: High Speed Circuit Switched Data

This means that in the best conditions Channels are defined by the number and position of their corresponding burst periods. This article needs attention from an expert in Telecommunications. It is also possible to directly use the digital signal as an Integrated Services Digital Network ISDN data signal and feed it into the equivalent of a remote access server.

Assuming a standard Circuit Switched Data transmission rate of HSCSD require the time slots being used to be fully reserved for a single user. It is possible that either at the beginning of the call, or at some point during a call, it will not be possible for the user’s full request to hecsd satisfied since the network is often configured so that normal voice calls take precedence over additional time slots for HSCSD users.

A single dedicated radio time slot is allocated between the phone and the base station. Four times faster than GSM, with a transfer rate of up to A transfer rate of up to