Method of throughconnecting wideband connections in a digital ti

Details Method of throughconnecting wideband connections in a digital ti Method of throughconnecting wideband connections in a digital ti

1990-06-14

1991-06-04

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 68, 370 581, H04R 1104

Patent

active

050220268

ABSTRACT:
A wideband connection between subscribers G and B is through-connected in a digital time switch module. Information arriving from the transmitting subscriber G is stored in a speech store (SS) on store locations (SM) corresponding to the channel numbers (8, 11, 17, 31) of G. The receiving subscriber B is assigned channels (7, 15, 21, 26). The channel numbers of G are stored in store locations (MM) of a matrix store (MS), and can be read-out via horizontal (HI) and vertical (VI) inputs. A fixed address number (6) is stored in a pointer store (PS) on store location (PM) corresponding to the channel numbers of subscriber B. When establishing the wideband connection, an internal address number (M) is written into a difference store (OS) on a store location (OM) having the address of the fixed address number (6). A time slot counter (TSC) steps forward the time slots (7, 15, 21, 26) of subscriber B and addresses the pointer store (PS), wherein the address number (6) addresses the difference store (OS). On each addressing occasion, the internal address number (M) is read-out to one of the vertical inputs (VI=18) and the time slot counter (TSC) addresses the horizontal inputs (HI) at the same time. The channel numbers of subscriber G in the store locations (MM) address the speech store (SS) and the content of the store locations (SM) are read-out to the channel numbers of subscriber B. Only the internal address number (M) need to be written-in when establishing the connection.

REFERENCES:
patent: 3236951 (1966-02-01), Yamamoto et al.
patent: 4068098 (1978-01-01), Thyselius
patent: 4467471 (1984-08-01), Troost
patent: 4759012 (1988-07-01), Suzuki
patent: 4771420 (1988-09-01), Deschaine et al.
patent: 4941141 (1990-07-01), Hayano
"Telecommunications, Telephone Networks 2", Ericsson, Televerket and Studentlitteratur (Lund, Sweden), 1987, chapter 9, pp. 61-68: Digital switching systems (text in English).

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