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copper twin wire

The copper twisted pair (CuDa) is the classic transmission medium in the access area for the subscriber line( ULL). It is a twisted pair of wires whose transmission characteristics had to be exclusively adapted to long-distance speech.

The symmetrically constructed twisted pairs are available with different impedances, namely 100 ohms, 120 ohms and 150 ohms. The twisted pairs most frequently used in Germany have an impedance of 100 ohms.

Due to the increasing requirements for new services, more efficient transmission methods have been developed, with which higher transmission speeds can be realized.

Possible uses for copper twisted pairs

Possible uses for copper twisted pairs

High-bit-rate transmission over the copper twisted pairs of the local loop was defined in the H specifications of the International Telecommunication Union( ITU) and ranges up to 2.32 Mbit/s with carrierless amplitude-phasemodulation( CAP).

Informations:
Englisch: copper twin wire
Updated at: 20.07.2011
#Words: 126
Links: copper (Cu), twisted pair (TP), transmission medium, area, subscriber line
Translations: DE
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