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What the fullform of BSC in GSM?
Base station controller..
Why gsm 880 mhz to 915 mhz is known as downlink frequency?
This is actually the EGSM uplink band. It carries signals "up" from the mobile station to the base station. EGSM downlink is from 925MHz to 960MHz and carries signals from the base station "down" to the mobile station.
What does Ms stand for in gsm mobile system?
Mobile Station
Does tigo Guatemala use SIM card?
Yes, they operate a GSM 850MHz Network, and all GSM phones use Sim Card.
Why gsm 900 hold more subscriber than gsm 1800?
GSM900 holds more subscribers than GSM1800 because of the lower frequency needed to transmit signals. Information from base station to mobile station and vice versa is lower for GSM900 compared to GSM1800. So there is more coverage even in rural areas, contributing more subscribers.
Factors to consider when selecting abase station for a gsm network?
internet
What is the structure of a GSM network?
Global System for Mobile Communications, or GSM, originally described a digital circuit switched network using full duplex voice telephony. It has been upgraded to include data communications and packet transport.
What network does consumer cellular operate on?
Consumer Cellular operates on a GSM network.http://en.wikipedia.org/wiki/List_of_United_States_wireless_communications_service_providers
Gsm 900 vs gsm 1800?
GSM-900 and GSM-1800 are used in most parts of the world: Europe, Middle East, Africa, Australia and most of Asia. In South and Central America the following countries use the following: : :* Costa Rica - GSM-1800 :* Brazil - GSM-850, 900 and 1800 :* Guatemala - GSM-850, GSM-900 and 1900 :* El Salvador - GSM-850, GSM-900 and 1900 GSM-900 uses 890-915 MHz to send information from the mobile station to the base station (uplink) and 935-960 MHz for the other direction (downlink), providing 124 RF channels (channel numbers 1 to 124) spaced at 200 kHz. Duplex spacing of 45 MHz is used. Guard bands 100 kHz wide are placed at either end of the range of frequencies[1]. : In some countries the GSM-900 band has been extended to cover a larger frequency range. This 'extended GSM', E-GSM, uses 880-915 MHz (uplink) and 925-960 MHz (downlink), adding 50 channels (channel numbers 975 to 1023 and 0) to the original GSM-900 band. The GSM specifications also describe 'railways GSM', GSM-R, which uses 876-915 MHz (uplink) and 921-960 MHz (downlink). Channel numbers 955 to 1023. GSM-R provides additional channels and specialized services for use by railway personnel. : All these variants are included in the GSM-900 specification. GSM-1800 uses 1710-1785 MHz to send information from the mobile station to the base tranceiver station (uplink) and 1805-1880 MHz for the other direction (downlink), providing 374 channels (channel numbers 512 to 885). Duplex spacing is 95 MHz. : GSM-1800 is also called DCS (Digital Cellular Service) in the United Kingdom, while being called PCS in Hong Kong[2] (not to mix up with GSM-1900 which is commonly called PCS in the rest of the world.)
Do all ATT phones need sim cards?
As AT&T is a GSM service provider all of their devices require a SIM card to operate on their network
What is difference between GSM900 and GSM1800?
gsm 900 less base stations compared to 1800, gsm 1800 more capacity compared to 900 in terms of traffic hence less congestion.
Do all tmobile phones come with a sims card?
As T-mobile uses GSM technology all of their devices require a SIM card to operate on their network.
