Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Pulse Communications Inc
Original Assignee
Hubbell Inc
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Filing date
Publication date
Application filed by Hubbell IncfiledCriticalHubbell Inc
Publication of CA2019233A1publicationCriticalpatent/CA2019233A1/en
Application grantedgrantedCritical
Publication of CA2019233CpublicationCriticalpatent/CA2019233C/en
Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges
(AREA)
Time-Division Multiplex Systems
(AREA)
Abstract
An-hook VF transmission through a channel unit to a subscriber telephone instrument is provided by a control unit which generates control signals for the channel unit. The control unit responds to receipt of an "idle" code by creating commands which establish a VF path through the channel unit regardless of whether the subscriber instrument is on-hook or off-hook.
CA 20192331989-11-011990-06-18Method and apparatus for providing on-hook transmission for digital loop carrier channel units
Expired - Fee RelatedCA2019233C
(en)