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GSM$500567$ - translation to italian

SPEECH CODING STANDARD

GSM 06.20; GSM-HR

GSM

sistema globale di comunicazioni su cellulare, sistema per la comunicazione cellulare digitale usata in molti paesi e basata su una variazione della tecnologia TDMA

Home Location Register

COMPONENT OF THE GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS (GSM)

Network and Switching Subsystem; Authentication Center; Home Location Register; Visitor Location Register; GMSC; Visitors Location Register; Qualdir; Mobile Switching Centre; GSM core network; Mobile Switching Center; Switching and Management Subsystem; Network Switching Subsystem; Mobile switching centre; Mobile switching center; Home location register; Visitor location register; Visitor Location Registers

banca di dati contenente i dati dei clienti che si registrano per un dato servizio (informatica)

analog modem

DEVICE THAT MODULATES AN ANALOG CARRIER SIGNAL TO ENCODE DIGITAL INFORMATION

K56flex; K56Plus; Computer modem; X2 (protocol); Telephone modem; 56 kbit/s modem; Modems; MODEM; 56K; 56k; 56 Kbps modem; 56,000 bps modem; V.Flex2; K56Flex; K56plus; X2 (Chipset); Analog modem; 56K modem; Mdoem; External modem; Intelligent modem; Limited Distance Modem; Mobile USB modem; Dial-up modem; 56k modem; 56k Modem; Gsm modem; 3G dongle; Portable modem; Volksmodem; Voiceband modem; Usb modem; 56kbit modem; 🖀; Phone Modem; Optical modem; 300 baud; Draft:Modem; Automatic calling unit; Automatic calling units; 33.6k modem

Modem analogico (modem semplice collegato tramite cavi non digitali quali per esempio cavi telefonici semplici)

Definition

Global System for Mobile Communications

<communications> (GSM, originally "Groupe de travail Sp?ciale pour les services Mobiles") One of the major standards for digital cellular communications, in use in over 60 countries and serving over one billion subscribers. The GSM standard is currently used in the 900 MHz, 1800 MHz and 1900 MHz bands. GPRS allows circuit switched data communications over GSM, and is widely used for World Wide Web and electronic mail access from cellular devices. GSM World (http://gsmworld.com/). (2005-01-26)

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Wikipedia

Half Rate

Half Rate (HR or GSM-HR or GSM 06.20) is a speech coding system for GSM, developed in the early 1990s.

Since the codec, operating at 5.6 kbit/s, requires half the bandwidth of the Full Rate codec, network capacity for voice traffic is doubled, at the expense of audio quality. The sampling rate is 8 kHz with resolution 13 bit, frame length 160 samples (20 ms) and subframe length 40 samples (5 ms).

GSM Half Rate is specified in ETSI EN 300 969 (GSM 06.20), and uses a form of the VSELP algorithm. Previous specification was in ETSI ETS 300 581–2, which first edition was published in December 1995.

For some Nokia phones one can configure the use of this codec:

To activate HR codec use enter the following code: *4720#
To deactivate HR codec use enter the following code: #4720#

https://en.wikipedia.org/wiki/Half Rate