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08.04.2020 01:06

Английский язык

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Exercise 6. Complete the sentences with the correct form (active or passive) of the verbs.

1. In second-generation networks these links (make)over expensive leased links.
2. General packet radio service (provide) a packet data service over an existing digital
mobile phone network.
3. This digital-to-analogue conversion (specify) according to these standards.
4. When coding is complete Discrete Cosine Transform (use) to reorganize the pixel
information.
5. The algorithm (convert) analogue video and audio to digital and (compress) the data.
6. On reaching the codec of destination the data (decompress) and (convert) back to
analogue for viewing.
7. An end-office telephone exchange (perform) two principal functions.
8. Traffic (manage) by a number of telephone processors connected to a message
distribution switch.
9. High bit rate digital subscriber line (permit) ISDN primary rate interface access over
twisted pair copper loops.
10. The performance of a modulation scheme (measure) by its symbol error probability.
11. The simple redirection of channels from one facility interface to another (call) crossconnection.