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How is the data rate for PCM digital voice signals 64 Kbps calculated?
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What is 16 kbps digital line used for in an isdn connection?
No111currs
Comparative chart for 1G 2G 3G and 4G GSM technology?
DatesCool New Features1G70's to 80'sWireless phones (cellular) are introduced, primarily for voice only.2G90's to 2000Increased performance achieved by allowing multiple users on a single channel. More and more cellular phones are used for data as well as voice.2.5G2001-2004The Internet turns the focus towards data transmission. Enhanced multimedia and streaming video are now possible. Phones support limited web browsing.3G2004-2005Enhanced multimedia and streaming video capabilities are increased. Standards are created to allow universal access and portability across different device types (Telephones, PDA's, etc.)4G2006+Speeds reach up to 40 Mbps. Enhanced multimedia, streaming video, access and portability are increased still further. Devices are equipped for world-wide roaming.Technology1GAnalogCMRTAMPS2GDigital Circuit SwitchedD-AMPSGSMCDMA2.5GDigital Packet SwitchedGPRSEDGE3GDigital Packet SwitchedUMTSW-CDMACDMA20004GDigital Broadband802.11Data Rate1G9.6 Kbps to 14.4 Kbps2GD-AMPS9.6 Kbps to 14.4 KbpsGSM9.6 Kbps to 14.4 KbpsIS95A9.6 Kbps to 14.4 KbpsIS95B115 Kbps2.5G56 Kbps to 144 Kbps3GUMTS2+ Mbps, up to 384 KbpsWCDMA384 Kbps (wide area access), 2 Mbps (local area access)CDMA2000614 Kbps4G20-40 MbpsFrequencyCarrier1G800 MHz30 kHz2GD-AMPS800 MHz or 1.9 GHz30 kHzGSM800 MHz or 1.9 GHz200 kHzIS95A/B800 MHz or 1.9 GHz1.25 MHz2.5G800 MHz or 1.9 GHz200 kHz3GUMTS2 GHz5 MHzWCDMA2 GHz5 MHzCDMA20002 GHz1.25 MHz / 3.75 MHz4GIn DevelopmentIn DevelopmentPrimary Countries1GWorldwide2GD-AMPSUSAGSMEuropeIS95A/BUSA2.5GEurope, Asia, USA3GEurope, Japan, USA4GIn Development
8 Which network protocol has the slowest transmission speed?
Local Talk is the network protocol that has the slowest transmission speed. Local Talk was developed by Apple Computer, Inc.
What are the differences between mrp1 and mrp2?
Answer:You asked: What are the differences between mrp1 and mrp2My answer is that I don't know. Kidding aside, your question should have read: What are the differences between mp1 and mp2?MP1 is an MPEG-1 Layer 1 Audio File.MP2 is an MPEG Layer II Compressed Audio File.MP3 is a commonly used universal Audio File.The MP1 audio file format used MPEG Layer 1 compression; that supported data rates of 384 kbps and was used primarily by Philips DCC Digital Compact cassettes; which has been, for the most part, replaced by the newer MP2 and MP3 formats.The MP2 audio file format used MPEG-1 Layer II compression to reduce the file size and for the most part, has mainly been replaced by the ubiquitous MP3 format. However; MP2 is still used for digital radio and digital television broadcasts.The quality of an MP3 file depends largely on the bit rate used for compression; common bit rates are 128 kbps, 160 kbps, and 192 kbps; higher bit rates result in higher quality files that also require more disk space. MP3 files are supported by most portable music players such as the Apple iPod; Microsoft Zune; and can also be played on the Amazon Kindle. Furthermore, MP3 audio music files can be played on virtually all home based sound systems.- THIS FOOL IS WRONG...The differences between MRP 1 and MRP 2 is the fact that MRP2 considers capacity calculations
What are the maximum upstream and downstream transfer rates for DSL and cable connections?
Cable systems provide rates of approximately 500 Kbps downstream and 128 Kbps upstream. Theoretically they can provide a bandwidth of 30 Mbps. A DSL system can provide speeds of up to 7.1 Mbps, but most providers offer a maximum of 1.5 Mbps upstream and downstream.
What is the voice-grade bandwidth for digital voice channels before compression?
64 Kbps
Voice grade bandwidthfor digital voice channels before compression is?
64 kbps
What is digital telephone?
Digital telephone is a services where from you can get voice with data services.Like old POTS you can have only voice services which works at 64 kbps rate, while digital telephone uses at least 128 kbps or higher rate so you can have voice and data services same time on same line.
Why we use 64 kbps for digital voice?
It's a relatively good compromise between quality and the amount of data having to be transmitted.
How does IDSL internet work?
IDSL is a system in which digital data is transmitted at 128 Kbps on a regular copper telephone line (twisted pair) from a user to a destination using digital (rather than analog or voice) transmission, bypassing the telephone company's central office equipment that handles analog signals. The trick is, a special router is placed at the phone company's central office, giving it the ability to send a digital signal over an analog line.
What is 16 kbps digital line used for in an isdn connection?
No111currs
What is the 16kbps digital line used for in an isdn connection?
A D channel of Delta. This channel can either be used as 16 Kbps or 64 Kbps connections.
What is the full bit rate per voice channel in GSM?
270.83 kbps
Full meaning of bandwidth?
Measurement of the capacity of a communications signal. For digital signals, the bandwidth is the data speed or rate, measured in bits per second (bps). For analog signals, it is the difference between the highest and lowest frequency components, measured in hertz (cycles per second). For example, a modem with a bandwidth of 56 kilobits per second (Kbps) can transmit a maximum of about 56,000 bits of digital data in one second. The human voice, which produces analog sound waves, has a typical bandwidth of three kilohertz between the highest and lowest frequency sounds it can generate.
What is the bidirectional data rate of a basic rate ISDN digital subscriber loop?
144 kbps
Which technology provides a connection speed of 512 Kbps to 52 Mbps?
Digital Subciber Line
24 voice signals are to be transmitted over a single phone line. What is the bandwidth required if the standard analog-to-digital sampling rate is used and each sample is converted into an 8bit value?
Voice comes in 8000 Hz frequency, so 16000 samples required each seconds. 1 sample if of 8 bits. 16000 sample if of 128000bits. these bits is send per second. so bandwidth required is 128kbs for single voice. for 24 it is 24 x 128 kbps = 3072 kbps = 3.1 mbps
