GB1352212A – Remote control telephone apparatus
– Google Patents
GB1352212A – Remote control telephone apparatus
– Google Patents
Remote control telephone apparatus
Info
Publication number
GB1352212A
GB1352212A
GB3221471A
GB3221471A
GB1352212A
GB 1352212 A
GB1352212 A
GB 1352212A
GB 3221471 A
GB3221471 A
GB 3221471A
GB 3221471 A
GB3221471 A
GB 3221471A
GB 1352212 A
GB1352212 A
GB 1352212A
Authority
GB
United Kingdom
Prior art keywords
line
tone
caller
tones
call
Prior art date
1970-07-09
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
GB3221471A
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.)
COM U TROL CORP
Original Assignee
COM U TROL CORP
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.)
1970-07-09
Filing date
1971-07-08
Publication date
1974-05-08
1971-07-08
Application filed by COM U TROL CORP
filed
Critical
COM U TROL CORP
1974-05-08
Publication of GB1352212A
publication
Critical
patent/GB1352212A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M3/00—Automatic or semi-automatic exchanges
H04M3/38—Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections
H04M3/382—Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections using authorisation codes or passwords
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M3/00—Automatic or semi-automatic exchanges
H04M3/42—Systems providing special services or facilities to subscribers
H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
H04M3/527—Centralised call answering arrangements not requiring operator intervention
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04Q—SELECTING
H04Q3/00—Selecting arrangements
Abstract
1352212 Automatic exchange equipment COM-U-TROL CORP 8 July 1971 [9 July 1970] 32214/71 Heading H4K A caller can gain a connection to a central substation, e.g. his office, through the telephone network and by means of a portable encoder transmit a first code signal to a transfer unit to cause an outgoing line to the exchange to be seized whereupon the caller can cause a call to be set up as if he were located at the central substation. The portable encoder generates tones which are used for causing seizure of the outgoing line, dialling and release of outgoing line alone or release of all connections to the transfer unit. As shown, the central substation is connected to the telephone system 30 through a plurality of lines of which 36, 38 are two. These two lines are interconnected by a transfer unit such that if line 38 is free a ringing signal on line 36, emanating from a call at a remote location 10, will cause trip ring-in 44 to operate. Cessation of ringing tone indicates to the remote caller that line 38 is available and a seizure tone consisting of frequencies f 1 and f 2 is transmitted through line 36. Detection of this tone by tone detector 46 causes the seize unit 48 to loop line 38 by relay contacts 128 and dialling tone is returned to the caller. Dialling is carried out on encoder 18 and bursts of tone f 1 are transmitted corresponding to the digits dialled at 20. These tones are detected and operate a relay 128 in dial-out unit 50 to provide loop disconnect pulses on line 38. When the call is finished tones f 1 and f 2 can be sent again which operates radial unit 52 to release and seize line 38 so that dial tone is again obtained and a further call can be made. Alternatively tones f 1 and f 3 can be sent to operate release circuit 54 which releases both lines 36 and 38. The encoder 18 is a portable battery operated device and uses a manually operated switch 22 for selecting which pair of frequencies are to be transmitted by loud-speaker 28 and received in the telephone equipment through handset microphone 14.
GB3221471A
1970-07-09
1971-07-08
Remote control telephone apparatus
Expired
GB1352212A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US5349870A
1970-07-09
1970-07-09
Publications (1)
Publication Number
Publication Date
GB1352212A
true
GB1352212A
(en)
1974-05-08
Family
ID=21984701
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3221471A
Expired
GB1352212A
(en)
1970-07-09
1971-07-08
Remote control telephone apparatus
Country Status (4)
Country
Link
US
(1)
US3689702A
(en)
CA
(1)
CA944495A
(en)
DE
(1)
DE2134125C3
(en)
GB
(1)
GB1352212A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2130846A
(en)
*
1982-10-22
1984-06-06
Nihon Resuko Kk
Apparatus for registering and altering abbreviated telephone dial numbers
GB2130848A
(en)
*
1982-10-26
1984-06-06
Nihon Resuko Kk
Telephone call transfer apparatus with receiving announcing means
Families Citing this family (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3867582A
(en)
*
1973-06-12
1975-02-18
United Business Communications
Remote control for private automatic branch telephone exchange
JPS605658A
(en)
*
1983-06-07
1985-01-12
Hashimoto Corp
Secretary telephone system
US4629832A
(en)
*
1984-09-10
1986-12-16
At&T Information Systems Inc.
Communication system administration method and circuitry
US5638432A
(en)
*
1992-06-23
1997-06-10
Siemens Aktiengesellschaft
Method of setting up telecommunication connections
FR2694468B1
(en)
*
1992-07-31
1994-10-21
Smart Ingenierie
Method and system for communication between a calling device and a device called via a PABX.
FR2699035B1
(en)
*
1992-12-04
1995-02-10
Info Telecom
Method and device for transmitting information between a sending entity and a receiving entity.
US5907597A
(en)
*
1994-08-05
1999-05-25
Smart Tone Authentication, Inc.
Method and system for the secure communication of data
Family Cites Families (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3443035A
(en)
*
1965-05-21
1969-05-06
Pioneer Mortgage & Investment
Wireless extension telephone
1970
1970-07-09
US
US53498A
patent/US3689702A/en
not_active
Expired – Lifetime
1971
1971-07-08
DE
DE2134125A
patent/DE2134125C3/en
not_active
Expired
1971-07-08
CA
CA117,760A
patent/CA944495A/en
not_active
Expired
1971-07-08
GB
GB3221471A
patent/GB1352212A/en
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2130846A
(en)
*
1982-10-22
1984-06-06
Nihon Resuko Kk
Apparatus for registering and altering abbreviated telephone dial numbers
GB2130848A
(en)
*
1982-10-26
1984-06-06
Nihon Resuko Kk
Telephone call transfer apparatus with receiving announcing means
Also Published As
Publication number
Publication date
DE2134125C3
(en)
1974-08-08
US3689702A
(en)
1972-09-05
CA944495A
(en)
1974-03-26
DE2134125B2
(en)
1974-01-24
DE2134125A1
(en)
1972-01-13
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Legal Events
Date
Code
Title
Description
1975-02-05
CSNS
Application of which complete specification have been accepted and published, but patent is not sealed
