Digital telephone link margin verification

A line circuit for serving a digital telephone set over a link of indeterminate length and attenuation characteristics includes a processor for issuing test messages over the link to the telephone set and which responds to the receipt of an acknowledgment message from the telephone set by inserting...

Full description

Saved in:
Bibliographic Details
Main Authors NEWLAND PAUL BENJAMIN, FULCOMER EMANUEL JAMES
Format Patent
LanguageEnglish
Published 06.11.2001
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
Online AccessGet full text

Cover

More Information
Summary:A line circuit for serving a digital telephone set over a link of indeterminate length and attenuation characteristics includes a processor for issuing test messages over the link to the telephone set and which responds to the receipt of an acknowledgment message from the telephone set by inserting increasing amounts of finite attenuation into the link until the acknowledgment message fails to be received, at which point the value of inserted attenuation is a measure of the excess link margin.
Bibliography:Application Number: US19990293718