Page 18 - eBOOK FUNDAMENTAL OF TELECOMMUNICATION NETWORK

Solution:

In 1979, the dial-up (up to 56kbps) service was rolled-

out. It enabled the data transmission which can be
operated over the telephony network.

In the 1990s; the ISDN service was deployed. The

enhancement of telephony technology was to improve

the telephony capability (multi-channels) and data

transmission (up to 128kbps with 2 channels).

Alcatel Digital Switch

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