Pre-cutover verification of switching system subscriber lines se

Details Pre-cutover verification of switching system subscriber lines se Pre-cutover verification of switching system subscriber lines se

1985-07-01

1987-03-24

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

379 25, H04J 116, H04M 1100

Patent

active

046530436

ABSTRACT:
A test arrangement and method for use prior to the replacement of a first switching system serving a plurality of subscriber lines via a digital carrier facility and via a remote terminal, by a second switching system, where facility interface equipment of the second system is bridged directly onto the digital facility to allow monitoring of digital signatures transmitted from the remote terminal during the continued, uninterrupted operation of the first system. A pair gain test controller of the first system is advantageously used by the second system to control the generation of such digital signatures to verify the consistency of the translation databases of the two systems in associating directory numbers with subscriber lines.

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patent: 4575839 (1986-03-01), Ogata et al.
patent: 4580259 (1986-04-01), Harada et al.

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