Circuit for the subscriber termination in an integrated services

Details Circuit for the subscriber termination in an integrated services Circuit for the subscriber termination in an integrated services

1984-05-07

1986-05-27

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 67, 3701101, H04Q 1104, H04J 312

Patent

active

045920478

ABSTRACT:
A circuit for the subscriber termination in an integrated services digital network (ISDN) to which a number of individual terminals are connected by means of S-interfaces, or by S-interface busses respectively connected in a number of terminals into a common ISDN network termination, each subscriber line having a B+B+D channel structure, has a circuit for interconnecting the D-channels of each of the subscriber line into a common D-channel connected to the common network termination, and means for connecting the common D-channel to each of said subscriber lines as a D-echo channel. The B-channels of each of the subscriber lines are connected in common to the B-channel leading to the common network termination, and the common D-channel from the network termination is connected in common as outputs to each of the subscriber lines.

REFERENCES:
patent: 3542957 (1970-11-01), Mitchell et al.
patent: 3708625 (1973-01-01), Angeleri et al.
patent: 3729590 (1973-04-01), Widl et al.
patent: 4466095 (1984-08-01), Kawano et al.
patent: 4486878 (1984-12-01), Haversman
E. Blum et al., "The Design and Applications of PCM Signalling Multiplexers", Budavox Telecomm. Rev., No. 3, 1979, pp. 1-16.
R. Trachsel, "64 kbit/s Data Adaption Unit for 2048 kbit/s PCM Terminals (DAU)", Hasler Rev., vol. 12, No. 3/4, 1979, pp. 82-91.
ISDN Customer to Network Signalling D Channel Protocol Level 1 Aspects-Moore, Whall, Kerswell-London, England, pp. 750-756, "IEEE Global Telecommunications Conference".
Proceedings of the 1982 International Symposium on Subscriber Loops and Services-Sep. 20-24, 1982, Toronto, Canada, pp. 66-70.

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