Universal Mobile Telephone System Definition
The Universal Mobile Telephone System (UMTS) has created a mobile telephone that is capable of global roaming and cell phone usage. The universal mobile phone is a third generation phone, constantly being updated and improved with new features and technologies.
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Technology
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The universal mobile phone is a third generation phone with a wide band code division multiple access interface, standardized by the Third Generation Partnership Project. Speech is encoded through the device via adaptive multirate compression and enhances full rate compression. The uplink frequency bands used on the phones are 1885 to 2025 MHz and the downlink frequency bands are 2110 to 2200 MHz. The generic radio access network manages and operates the internet, ISDN, GSM and UMTS network.
Problems
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Universal mobile phones often have short battery life and can be bulky in size. Some features seem to not function properly in rural areas, although heavily populated areas do not experience such complications. There is also not a large market demand for third generation phones.
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Features
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Standard universal mobile phones have e-mail, web browser and bluetooth capabilities. Some include MP3 and video players. Unlike a regular phone, with transfer rates of 2 megabits per second, UMTS supports transfer rates of 1920 kilobits per second. High-speed downlink packet access, which can enhance transfer rates, as well as mobile messaging service, both come standard on all phones.
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