GSM networks use various bandings, or in other words different Wave streghts/lenghts/frequecies to provide their services.
GSM 900, is where the specific mobile carrier uses, 900Mhz as the wave lenght, or banding for its services. This is one of the lowest of todays commercial communication services.
GSM 1800Mhz was once the highest banding range, until 3G, during the introduction of tri-band networks. These networks use a wide range of signals, starting from 800 Mhz and then 1700 Mhz or else 1800 Mhz at a maximum.
The higher the banding, higher the coverage area, enhancing the voice call clarity to crystal clear positions. The phones that support tri-band(800/1700/1800Mhz) can be used within any selection of these bands. If the country only provides 900Mhz, then you could use it at 900Mhz. If at maximum of 1800Mhz, yes it automatically switches on to that frequency.
If your phone only supports the signal frequency of 1800Mhz (not practical though, we find the tri-band support with many phones today! the phone that supports only one frequency is called "Single-Band"), and the country/ or mobile carrier, provides services at only 900Mhz, then you cannot use this phone. This is the versitality of the tri-band supported phones.
At present, we find phones, that support Quad-Band (900/1700/1800/2100 Mhz). The tri-bandings are simply extended with a new arrival of 2100Mhz. This maximum frequency is used for 3G services, today.
If you want to know some-sort of info, on 3G check this link, i'd answered it.
http://answers.yahoo.com/question/index;...
There is so much that could be mentioned.
In brief, these(900/1800) are the Frequencies at which some radio frequency transmitter and/or reciever, the mobile phone in many cases, function at. These are the permitted/legal bands that are used in commercial networks. They posses the license for these bandings only (higher the banding, higher the fee to retain or attain the license).
Hope it was useful!
Good Luck!
GSM 900, is where the specific mobile carrier uses, 900Mhz as the wave lenght, or banding for its services. This is one of the lowest of todays commercial communication services.
GSM 1800Mhz was once the highest banding range, until 3G, during the introduction of tri-band networks. These networks use a wide range of signals, starting from 800 Mhz and then 1700 Mhz or else 1800 Mhz at a maximum.
The higher the banding, higher the coverage area, enhancing the voice call clarity to crystal clear positions. The phones that support tri-band(800/1700/1800Mhz) can be used within any selection of these bands. If the country only provides 900Mhz, then you could use it at 900Mhz. If at maximum of 1800Mhz, yes it automatically switches on to that frequency.
If your phone only supports the signal frequency of 1800Mhz (not practical though, we find the tri-band support with many phones today! the phone that supports only one frequency is called "Single-Band"), and the country/ or mobile carrier, provides services at only 900Mhz, then you cannot use this phone. This is the versitality of the tri-band supported phones.
At present, we find phones, that support Quad-Band (900/1700/1800/2100 Mhz). The tri-bandings are simply extended with a new arrival of 2100Mhz. This maximum frequency is used for 3G services, today.
If you want to know some-sort of info, on 3G check this link, i'd answered it.
http://answers.yahoo.com/question/index;...
There is so much that could be mentioned.
In brief, these(900/1800) are the Frequencies at which some radio frequency transmitter and/or reciever, the mobile phone in many cases, function at. These are the permitted/legal bands that are used in commercial networks. They posses the license for these bandings only (higher the banding, higher the fee to retain or attain the license).
Hope it was useful!
Good Luck!
No comments:
Post a Comment