Telephonic communications – Plural exchange network or interconnection – With interexchange network routing
Patent
1990-11-20
1992-08-11
Schreyer, Stafford D.
Telephonic communications
Plural exchange network or interconnection
With interexchange network routing
379244, 379268, H04Q 714, H04Q 354, H04Q 366
Patent
active
051386577
ABSTRACT:
This invention relates to apparatus and a method for controlling a Digital Access and Crossconnect System (DACS) from a connected toll switching system. All control messages from operations support systems (OSS) for making crossconnect changes in the DACS are first routed to the toll switch. The toll switch extracts information needed to update its database and sends a control message to the DACS. In addition, the toll switch responds to changes in traffic patterns, perhaps due to the loss of a transmission facility, to generate a crossconnect change message to the DACS to rearrange facilities for more optimum performance. Advantageously, the OSSs for DACS control and switch control is combined and the toll network is made more responsive to traffic pattern changes and to losses of transmission facilities.
Also disclosed are embodiments where a DACS interconnection arrangement is integrated into a switching system, under a common control structure, in a local, central office wire center, and an embodiment where the interconnection arrangement is implemented using add/drop multiplexers connected in a fiber ring in a distributed architecture rather than using a DACS.
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Colton John R.
Gavrilovich Charles D.
Kennedy, Jr. Richard N.
Kulzer John J.
Metz Reinhard
AT&T Bell Laboratories
Schreyer Stafford D.
Ulrich Werner
Watland Ross T.
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