Last updated: 01 July 2012
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Definitions and Full Forms of Services in Telecom Industry

What is a Video call?
When you talk to some body over phone and are able to see the person at other end on the screen of your phone then it is called a video call.

What is USIM ?
USIM is a SIM card for 3G services. USIM stand for Universal Subscriber Identification Module. USIM is provided to access 3G services.

What is 3G?
3G is the next generation of mobile communications systems. It enhances the services such as multimedia, high speed mobile broadband, internet access with the ability to view video footage on your mobile handset. With a 3G phone and access to the 3G network you can make video calls, watch live TV, access the high speed internet, receive emails and download music tracks, as well as the usual voice call and messaging services found on a mobile phone, like person to person video, live streaming, downloadable video of entertainment, news, current affairs and sport content and video messaging.


UMTS Stands for Universal Mobile Telecommunication System

SIM(Subcriber Identity Module) memory with   32/64 Kb is Normal SIM
SIM (USIM) Memory with 128/256 Kb is USIM(Universal Subcriber Identity Module) USIM is having higher memory capacity

Full Form of 'URA' - User Registration Area
Full Form of 'URAN' - UMTS Radio Access Network
Full Form of 'URI' - Uniform Resource Identifier
Full Form of 'URL' - Uniform Resource Locator
Full Form of 'USC' - UE Service Capabilities
Full Form of 'USCH' - Uplink Shared Channel
Full Form of 'USIM' - Universal Subscriber Identity Module
Full Form of 'USSD' - Unstructured Supplementary Service Data
Full Form of 'UT' - Universal Time

FullForm of 'UTRA' in Telecom Industry is Universal Terrestrial Radio Access
FullForm of 'UTRAN' in Telecom Industry is Universal Terrestrial Radio Access Network
FullForm of 'UUI' in Telecom Industry is User-to-User Information
FullForm of 'UUS' in Telecom Industry is User-to-User Signalling
FullForm of 'VASP' in Telecom Industry is Value Added Service Provider
FullForm of 'VBR' in Telecom Industry is Variable Bit Rate
FullForm of 'VBS' in Telecom Industry is Voice Broadcast Service
FullForm of 'VC' in Telecom Industry is Virtual Circuit
FullForm of 'VGCS' in Telecom Industry is Voice Group Call Service
FullForm of 'VHE' in Telecom Industry is Virtual Home Environment
FullForm of 'VoIP' in Telecom Industry is Voice Over IP

The Evaluation Of Mobile Technology and Generation Speed
2G - Voice GPRS – 14.4 Kbps
2.5G - Voice EDGE – 125 Kbps
3G - Main data Voice High Speed Downlink Packet Access (HSDPA) - 3.4 Mbps
4G / LTE - Very High data speed >7.6 Mbps

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