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| [http://www.heliostelecom.com/eproducts_detail.asp?id=105 GSM] dates to the 1980s, when analog cellular systems in Nordic countries experienced rapid growth | [[http://www.heliostelecom.com/eproducts_detail.asp?id=105|GSM]] dates to the 1980s, when analog cellular systems in Nordic countries experienced rapid growth |
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| The European version of GSM operates in the [http://www.heliostelecom.com/eproducts_detail.asp?id=105 900MHz band], which was avilable in countries that are | The European version of GSM operates in the [[http://www.heliostelecom.com/eproducts_detail.asp?id=105|900MHz band]], which was avilable in countries that are |
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| [http://www.heliostelecom.com/eproducts_detail.asp?id=105 1900MHz band] is used by GSM personal communications system in the United States. | [[http://www.heliostelecom.com/eproducts_detail.asp?id=105|1900MHz band]] is used by GSM personal communications system in the United States. |
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| GSM represents a TDMA version of [http://www.heliostelecom.com/eproducts_detail.asp?id=105 PCS]. As a digital technology, voice is first compressed using a | GSM represents a TDMA version of [[http://www.heliostelecom.com/eproducts_detail.asp?id=105|PCS]]. As a digital technology, voice is first compressed using a |
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| Tags: [http://www.heliostelecom.com/eproducts_detail.asp?id=105 RF Repeater] | [http://www.heliostelecom.com/eproducts_detail.asp?id=105 GSM Repeater] | [http://www.heliostelecom.com/eproducts_detail.asp?id=105 CDMA Repeater] | [http://www.heliostelecom.com/eproducts_detail.asp?id=105 UMTS Repeater] | |
Tags: [[http://www.heliostelecom.com/eproducts_detail.asp?id=105|RF Repeater]] | [[http://www.heliostelecom.com/eproducts_detail.asp?id=105|GSM Repeater]] | [[http://www.heliostelecom.com/eproducts_detail.asp?id=105|CDMA Repeater]] | [[http://www.heliostelecom.com/eproducts_detail.asp?id=105|UMTS Repeater]] | |
GSM
GSM dates to the 1980s, when analog cellular systems in Nordic countries experienced rapid growth that resulted in the development of a new digital cellular standard. After five years of effort, 13 network operators and administrators signed a charter for the standardization of GSM. At that time, GSM was referred to by its French name, Group Special Mobile, but it is now known on a worldwide basis as Global System for Mobile Communications.
The European version of GSM operates in the 900MHz band, which was avilable in countries that are members of the European commission. Unfortunately, the 900MHz band in the United States was not available, so the 1900MHz band is used by GSM personal communications system in the United States.
GSM represents a TDMA version of PCS. As a digital technology, voice is first compressed using a hybrid coder at approximately 13kps before the data is modulated. With this digital technolgy, you can connect a data source directly to a GSM cell phone without the use of a modem. However, the highest data rate that you can expect to obtain will be approximately 14.4kbps.
Website: http://www.heliostelecom.com Company Name: Xiamen Helios Telecom Equipment Manufacture Inc. Department: Network Optimization Department
Tags: RF Repeater | GSM Repeater | CDMA Repeater | UMTS Repeater | Wireless Solutions | Wireless Network Optimization