Information facilities of the signal, message source and transmission channel, PDH, SDH. Signalling no.7, ISDN systems, ATM - systems for multimedia picture transmission, speech and data, facilities of LAN networks, MAN and VAN from transmission and security digital signal point of view.
		Recommended literature:
		Blahut, R.E. : Digital Transmission of Information. 1990. Proakis, J.G. : Digital Communications. Čižmár, A. : Komunikačné systémy (scripts). Čižmár, A. : Komunikačné systémy (scripts - rules for practice) Čižmár, A. : Digital Communications and Speech Coding systems. 1997. Čižmár, A., Doboš, L., Palitefka, R. : Mobilné ATM siete. 1999.