GB2183125A - Improvements to communication apparatus - Google Patents

Improvements to communication apparatus Download PDF

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Publication number
GB2183125A
GB2183125A GB08524830A GB8524830A GB2183125A GB 2183125 A GB2183125 A GB 2183125A GB 08524830 A GB08524830 A GB 08524830A GB 8524830 A GB8524830 A GB 8524830A GB 2183125 A GB2183125 A GB 2183125A
Authority
GB
United Kingdom
Prior art keywords
computer
telephone
bell
communicator
modem
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
GB08524830A
Other versions
GB8524830D0 (en
GB2183125B (en
Inventor
Stephen Henry Bryan
Adrian Glyn Jowett
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.)
MICROCOMPASS Ltd
Original Assignee
MICROCOMPASS Ltd
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 MICROCOMPASS Ltd filed Critical MICROCOMPASS Ltd
Priority to GB8524830A priority Critical patent/GB2183125B/en
Publication of GB8524830D0 publication Critical patent/GB8524830D0/en
Publication of GB2183125A publication Critical patent/GB2183125A/en
Application granted granted Critical
Publication of GB2183125B publication Critical patent/GB2183125B/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)

Abstract

An apparatus to prevent the bell of a telecommunications receiver (for example a telephone hand-set) ringing when a communicator wishes to be connected by a telephone call directly to a computer linked to the receiver and a modem unit. <IMAGE>

Description

SPECIFICATION Improvements to Communication Apparatus The present invention is concerned with communications via telephone apparatus to a computer. It is known that a computer may be linked to a telephone, say a hand-set, so that a communicator is able to make a telephone call to the telephone number of the installation, and be automatically connected to the computer.
Communication can then take place between the communicator and the computer. This is achieved via known means, e.g. a "modulator/demodulator" (modem) unit connected to the telephone and the computer.
A disadvantage with present installations is that the bell which is usually part of the hand-set gives at least one ring before the connection is made to the computer. If the installation is in a private residence or office, for example, this can be a nuisance.
The present invention has been developed to overcome this disadvantage according to the invention therefore, there is provided a device which enables the communicator to dial the number of the telephone concerned, and be connected directly to the computer without causing the bell in the handset to ring.
One example of the device according to the invention is shown basically diagrammatically in Fig. 1 and consists of a free standing circuit, preferably enclosed in a suitable case, with terminals for external connections.
Key to Fig. 1 PL1 Connector No. 1-To equivalent terminals on a computer having the following connections using standard terms or their synonyms as follows: E-Earth, frame to ground l--Signal to ground 2-Transmit data received data GRequest to send 5--Clearto send FData set, ready 7-Data terminal ready & ata carrier detected PL2 Connector No. 2-To equivalent terminals on a modem having connections using standard terms or their synonyms as for PL1.
SK1 Connector-To equivalent terminals on a tele phone hand set with bell, having the following connections using standard terms or their synonyms as follows:- lO-Line "A" 11-Ground 12-Bell 13-Line "B" PL3 Connector No. 3-To equivalent terminals on an incoming telephone line using standard terms or their synonyms as for SK1.
14DiodeTypical, international ref type IN41 48.
15 & 18Coil & ingle pole change over switch typically as one unit.
17--Diodee-Typically, international ref type Z5-300.
14-Resistor-Typically 3,000 ohms.
The diagram shows a configuration of components, electrically connected.
Standard notation is used in the diagram to describe the components and connections.
No claims are made for these components as individual items and equivalents may be used where specific makes are described. The circuit shown may be improved and extended for handling different types of signals, e.g. for radio or radiotelephone communications, or for combining a modem unit with the device in a single enclosure.
The device may be interposed in various ways connecting the incoming line, the modem unit, the handset, its bell and the computer, depending on the location in the circuit of the modem unit relative to the handset and computer, but in each case providing the means according to the invention of connecting the communicator with. the computer without the bell in the handset ringing.
The computer is connected by a suitable switching system so that it may be isolated when required.
The invention allows the handset to be used for making and receiving telephone calls in the usual way.
One mode of operation of the device according to the invention is as follows:- 1. A communicator dials the number of the telephone.
2. An incoming signal is received by the modem.
3. The modem unit activates the device according to the invention.
4. The device simultaneously isolates the bell of the handset and the communicator is automatically connected to the computer.
One embodiment of the invention is self powered and has the advantage that the device need not draw power from the telephone line system.
1. An electrical apparatus comprising an electrical circuit and components in use to prevent an audio signal being generated in a telecommunications receiver in turn connected to a computer.
2. An apparatus as claimed in claim 1 where the electrical circuit and components are as shown in Figure 1 and accompanying description.
3. An apparatus as claimed in either of claims 1 or 2 where it is enclosed in a case with means for external connections.
4. An apparatus as claimed in any of claims 1 to 3 where it is connected to a modulating demodulating unit (a modem).
5. An apparatus as claimed in either of claims 1 or 2 where it is incorporated in a modem unit.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Improvements to Communication Apparatus The present invention is concerned with communications via telephone apparatus to a computer. It is known that a computer may be linked to a telephone, say a hand-set, so that a communicator is able to make a telephone call to the telephone number of the installation, and be automatically connected to the computer.
    Communication can then take place between the communicator and the computer. This is achieved via known means, e.g. a "modulator/demodulator" (modem) unit connected to the telephone and the computer.
    A disadvantage with present installations is that the bell which is usually part of the hand-set gives at least one ring before the connection is made to the computer. If the installation is in a private residence or office, for example, this can be a nuisance.
    The present invention has been developed to overcome this disadvantage according to the invention therefore, there is provided a device which enables the communicator to dial the number of the telephone concerned, and be connected directly to the computer without causing the bell in the handset to ring.
    One example of the device according to the invention is shown basically diagrammatically in Fig. 1 and consists of a free standing circuit, preferably enclosed in a suitable case, with terminals for external connections.
    Key to Fig. 1 PL1 Connector No. 1-To equivalent terminals on a computer having the following connections using standard terms or their synonyms as follows: E-Earth, frame to ground l--Signal to ground 2-Transmit data received data GRequest to send 5--Clearto send FData set, ready
    7-Data terminal ready & ata carrier detected PL2 Connector No. 2-To equivalent terminals on a modem having connections using standard terms or their synonyms as for PL1.
    SK1 Connector-To equivalent terminals on a tele phone hand set with bell, having the following connections using standard terms or their synonyms as follows:- lO-Line "A" 11-Ground
    12-Bell 13-Line "B" PL3 Connector No. 3-To equivalent terminals on an incoming telephone line using standard terms or their synonyms as for SK1.
    14DiodeTypical, international ref type IN41 48.
    15 & 18Coil & ingle pole change over switch typically as one unit.
    17--Diodee-Typically, international ref type Z5-300.
    14-Resistor-Typically 3,000 ohms.
    The diagram shows a configuration of components, electrically connected.
    Standard notation is used in the diagram to describe the components and connections.
    No claims are made for these components as individual items and equivalents may be used where specific makes are described. The circuit shown may be improved and extended for handling different types of signals, e.g. for radio or radiotelephone communications, or for combining a modem unit with the device in a single enclosure.
    The device may be interposed in various ways connecting the incoming line, the modem unit, the handset, its bell and the computer, depending on the location in the circuit of the modem unit relative to the handset and computer, but in each case providing the means according to the invention of connecting the communicator with. the computer without the bell in the handset ringing.
    The computer is connected by a suitable switching system so that it may be isolated when required.
    The invention allows the handset to be used for making and receiving telephone calls in the usual way.
    One mode of operation of the device according to the invention is as follows:- 1. A communicator dials the number of the telephone.
    2. An incoming signal is received by the modem.
    3. The modem unit activates the device according to the invention.
    4. The device simultaneously isolates the bell of the handset and the communicator is automatically connected to the computer.
    One embodiment of the invention is self powered and has the advantage that the device need not draw power from the telephone line system.
    1. An electrical apparatus comprising an electrical circuit and components in use to prevent an audio signal being generated in a telecommunications receiver in turn connected to a computer.
    2. An apparatus as claimed in claim 1 where the electrical circuit and components are as shown in Figure 1 and accompanying description.
    3. An apparatus as claimed in either of claims 1 or 2 where it is enclosed in a case with means for external connections.
    4. An apparatus as claimed in any of claims 1 to 3 where it is connected to a modulating demodulating unit (a modem).
    5. An apparatus as claimed in either of claims 1 or 2 where it is incorporated in a modem unit.
    6. An apparatus as claimed in any of claims 1 to 5 in use to enable a communicator to be connected directly to a computer via a telecommunications link and receiver incorporating an audio signal generator without an audio signal being generated. 7. An apparatus as claimed in claim 8 where the telecommunications link is a telephone line and the receiver is a hand-set with bell.
    8. An apparatus as claimed in any of claims 1 to 7 where it is self-powered.
GB8524830A 1985-10-10 1985-10-10 Improvements to communication apparatus Expired GB2183125B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8524830A GB2183125B (en) 1985-10-10 1985-10-10 Improvements to communication apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8524830A GB2183125B (en) 1985-10-10 1985-10-10 Improvements to communication apparatus

Publications (3)

Publication Number Publication Date
GB8524830D0 GB8524830D0 (en) 1985-11-13
GB2183125A true GB2183125A (en) 1987-05-28
GB2183125B GB2183125B (en) 1989-11-29

Family

ID=10586381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8524830A Expired GB2183125B (en) 1985-10-10 1985-10-10 Improvements to communication apparatus

Country Status (1)

Country Link
GB (1) GB2183125B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212363A (en) * 1987-11-13 1989-07-19 Unisource Corp Fax/telephone switching device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1413339A (en) * 1971-11-22 1975-11-12 St Clair Kilby J Telephone-call screening apparatus
GB1432983A (en) * 1972-06-26 1976-04-22 St Clair Kilby J Telephone answering system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1413339A (en) * 1971-11-22 1975-11-12 St Clair Kilby J Telephone-call screening apparatus
GB1432983A (en) * 1972-06-26 1976-04-22 St Clair Kilby J Telephone answering system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212363A (en) * 1987-11-13 1989-07-19 Unisource Corp Fax/telephone switching device

Also Published As

Publication number Publication date
GB8524830D0 (en) 1985-11-13
GB2183125B (en) 1989-11-29

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Legal Events

Date Code Title Description
711B Application made for correction of error (sect. 117/77)
711E Case decided by the comptroller ** specification corrected (sect. 117/1977)
817A Application for correction of clerical errors now open to opposition (sect. 117/1977)
711G Correction allowed (sect. 117/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931010