CA727730A - Telephone system permanent signal trunk - Google Patents

Telephone system permanent signal trunk

Info

Publication number
CA727730A
CA727730A CA727730A CA727730DA CA727730A CA 727730 A CA727730 A CA 727730A CA 727730 A CA727730 A CA 727730A CA 727730D A CA727730D A CA 727730DA CA 727730 A CA727730 A CA 727730A
Authority
CA
Canada
Prior art keywords
telephone system
system permanent
signal trunk
permanent signal
trunk
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.)
Expired
Application number
CA727730A
Inventor
A. Mayer Arthur
D. Robb Theodore
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA727730A publication Critical patent/CA727730A/en
Expired legal-status Critical Current

Links

CA727730A Telephone system permanent signal trunk Expired CA727730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA727730T

Publications (1)

Publication Number Publication Date
CA727730A true CA727730A (en) 1966-02-08

Family

ID=36066644

Family Applications (1)

Application Number Title Priority Date Filing Date
CA727730A Expired CA727730A (en) Telephone system permanent signal trunk

Country Status (1)

Country Link
CA (1) CA727730A (en)

Similar Documents

Publication Publication Date Title
CA727730A (en) Telephone system permanent signal trunk
AU409659B2 (en) Telephone system
CA735572A (en) Telephone system
AU424434B2 (en) Telephone extension system
AU1823267A (en) Telephone system
AU1176066A (en) Telephone extension system
AU405655B2 (en) Speaker system
CA730770A (en) Remote telephone extension system
CA740265A (en) Loudspeaker system
AU409494B2 (en) Telephone signalling
CA742311A (en) Telephone signal reporting system
CA727297A (en) Digital communication system
CA728260A (en) Digital communication system
CA740065A (en) Telephone signalling systems
AU1549866A (en) Speaker system
CA728263A (en) Communication system
CA736577A (en) Communication system
CA737059A (en) Telephone trunk make busy circuit
AU415393B2 (en) Distortion system
AU423089B2 (en) Cue signal communication system
CA732313A (en) Receiving system
CA776803A (en) Telephone system
CA792853A (en) Telephone system
AU1180466A (en) Improved communication system
AU403193B2 (en) Subscriber communication system