Trunk-conditioning for reconfigurable T1 access to nodal service

Details Trunk-conditioning for reconfigurable T1 access to nodal service Trunk-conditioning for reconfigurable T1 access to nodal service

1995-09-12

1997-08-26

Chin, Wellington

Multiplex communications

Pathfinding or routing

Through a circuit switch

379229, 370384, H04Q 1104

Patent

active

056617259

ABSTRACT:
Dynamic reconfiguration of T1 access channels to various Nodal (network) services can be realized by applying carefully devised trunk-conditioning signals to disconnected channels to provide proper system responses and prevent billing errors as well as unwanted alarm conditions. Trunk-conditioning with specific signals in binary sequences are defined for Terminal lines and Private Branch Exchange ("PBX") lines for the popular signalling type of E&M, LS, GS and PLAR. A steady idle signal is recommended for Terminal line conditioning; and a short duration of idle signal followed by a steady busy signal for inter-switch applications (eg. PBX to 4ESS.TM.) while loss of connectivity exists. This technique can be used in implementing the RINA service function for services offered by AT&T and any similar service provider. The service function will allow for greater access flexibility and better utilization of access bandwidth as well as network services. It is a value added feature to Special Services (private lines), as well as other existing service offerings.

REFERENCES:
patent: 4782479 (1988-11-01), Rozema
patent: 4903263 (1990-02-01), Patel et al.
patent: 5444693 (1995-08-01), Arslan et al.
patent: 5521972 (1996-05-01), Iki

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