Subscriber line interface circuit in a switching system

Details Subscriber line interface circuit in a switching system Subscriber line interface circuit in a switching system

1990-06-13

1991-10-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370060, 370 601, 370 942, H04J 0324

Patent

active

050581112

ABSTRACT:
A subscriber line interface circuit in a packet switched network is capable of reducing the S/N ratio. Voice signals are transmitted and received as analog signals via line terminal circuits which are corrected to respective packet communication signal processing circuits but not to a common bus. In the packet communication signal processing circuits, packet assembly and disassembly, voice signal processing, and line terminal circuit control are carried out in synchronism with the packet communication network. Packet data are transferred serially between the packet communication signal processing circuits and a switch interface circuit.

REFERENCES:
patent: 4317195 (1982-02-01), Barberis et al.
patent: 4453247 (1984-06-01), Suzuki et al.
patent: 4486878 (1984-12-01), Havermans
patent: 4598400 (1986-07-01), Hillis
patent: 4774706 (1986-10-01), Adams
patent: 4802161 (1989-01-01), Byars et al.
patent: 4885744 (1989-12-01), Lespagnol et al.
patent: 4975906 (1990-12-01), Takiyasu et al.

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