CA2019233A1 - Method and apparatus for providing on-hook transmission for digital loop carrier channel units - Google Patents

Method and apparatus for providing on-hook transmission for digital loop carrier channel units

Info

Publication number
CA2019233A1
CA2019233A1 CA 2019233 CA2019233A CA2019233A1 CA 2019233 A1 CA2019233 A1 CA 2019233A1 CA 2019233 CA2019233 CA 2019233 CA 2019233 A CA2019233 A CA 2019233A CA 2019233 A1 CA2019233 A1 CA 2019233A1
Authority
CA
Canada
Prior art keywords
providing
hook
carrier channel
channel units
digital loop
Prior art date
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.)
Granted
Application number
CA 2019233
Other languages
French (fr)
Other versions
CA2019233C (en
Inventor
Roger A. Nightingale
Makan Abousaeedi
Winston M. Gadsby
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pulse Communications Inc
Original Assignee
Hubbell Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hubbell Inc filed Critical Hubbell Inc
Publication of CA2019233A1 publication Critical patent/CA2019233A1/en
Application granted granted Critical
Publication of CA2019233C publication Critical patent/CA2019233C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (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 2019233 1989-11-01 1990-06-18 Method and apparatus for providing on-hook transmission for digital loop carrier channel units Expired - Fee Related CA2019233C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US430,156 1982-09-30
US43015689A 1989-11-01 1989-11-01

Publications (2)

Publication Number Publication Date
CA2019233A1 true CA2019233A1 (en) 1991-05-01
CA2019233C CA2019233C (en) 1999-11-16

Family

ID=23706294

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2019233 Expired - Fee Related CA2019233C (en) 1989-11-01 1990-06-18 Method and apparatus for providing on-hook transmission for digital loop carrier channel units

Country Status (1)

Country Link
CA (1) CA2019233C (en)

Also Published As

Publication number Publication date
CA2019233C (en) 1999-11-16

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