| D-AMPS |
D-AMPS has been renamed TDMA (Time Division Multiple
Access). TDMA is a digital mobile phone network that operates
in the US, Latin America, New Zealand, parts of Russia and Asia
Pacific. Ericsson's TDMA mobile phonesalso work on AMPS networks.
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| Digital |
The newest form of wireless communications that
takes all voice transmissions and converts them to computer
language (zeros and ones, or “binary” language) and then reconstructs
them into the original voice format at the other end. More secure
than its original sibling, analog, and also relatively impervious
to static or fading signals. |
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| Downlink |
Technical term for data transmission in the direction
from the network, the provider or the Internet provider to the
subscriber. (The return channel is know as the uplink.) |
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| Dropped Call |
A wireless call that is unintentionally disconnected
due to a system problem, lack of channel availability or dead
spot in coverage. |
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| DS-FDD |
Direct Spread Frequency Division Duplex. European
asynchronous W-CDMA FDD mode. |
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| DS-WCDMA |
Direct Sequence/Spread Wideband Code Division
Multiple Access. A 3G radio interface for UMTS, also known as
UTRA FDD or WCDMA-DS, and adopted as the IMT-DS 3G standard |
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| DVB |
Digital Video Broadcasting is harmonized digital
TV that covers all media (satellite, cable and terrestrial).
It supports Internet services at speed up to 6 Mbps and can
be used on mobile devices. |
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| Dual band |
Dual band mobile phones can work on networks that
operate on different frequency bands. This is useful if you
move between areas covered by different networks. |
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| Dual mode |
Dual mode mobile phones work on more than one
network (for example, CDMA2000 and WCDMA). |
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