GB1351717A - Telephone system with data traffic - Google Patents
Telephone system with data trafficInfo
- Publication number
- GB1351717A GB1351717A GB3166472A GB3166472A GB1351717A GB 1351717 A GB1351717 A GB 1351717A GB 3166472 A GB3166472 A GB 3166472A GB 3166472 A GB3166472 A GB 3166472A GB 1351717 A GB1351717 A GB 1351717A
- Authority
- GB
- United Kingdom
- Prior art keywords
- data
- junctor
- telephone
- call
- computer
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
Abstract
1351717 Automatic exchange systems INTERNATIONAL STANDARD ELECTRIC CORP 6 July 1972 [9 July 1971] 31664/72 Heading H4K In a private branch exchange catering for telephone subscribers and for data subscribers who may set up calls of differing format, e.g. in speed, modulation or error checking method, every call is initially set up to a telephone junctor and then, if necessary, this is replaced by a data junctor and a so-called data link circuit that provides the necessary interface for the data format involved. A junctor (see Fig. 5) provides line power feed supply SP for both ends of a connection, an a.c. speech path, a unit DU for connecting it to data links DUe, and, optionally, supplies for dial tone WT, and ringing RU as well as dialled digit reception WA and register connecting RA facilities. In Fig. 2 a calling PBX subscriber Tln1 is normally connected to a telephone junctor IVS via switching network NStAnl but in response to digits indicating a data call this connection is replaced by one to data junctor DVS which returns a second dial tone. A register Reg armed with the identity of the wanted party and knowing the caller's identity selects an appropriate pair of data links such as to allow compatible communications between the two parties. In the case of a call to a computer DVA only one link DUe1 or DUe2 is required, these links being operable at different speeds, e.g. 200 and 1200 baud respectively. For an external call a pair, e.g. DUe5, DUe6, are chosen as also is an outgoing relay at AVS of the main network. The link pair may be permanently associated (Fig. 1, not shown), selectively connectible by a switching network KF2 as shown, or interconnectible by a communications computer (Fig. 3, not shown). The latter may incorporate computer DVA and may be remotely located in which case switching network KF1, which gives access to the links, is also remotely located thereby restricting the conductor runs to simply the data message pairs and the control data bus extending from the register via a common control circuit to all the individual control circuits of the switching networks and the computer. Once the connection has been set up and checked by a speech message, the subscribers switch from their telephone sets to their data sets DEE1. Data may be sent using frequency modulation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712134350 DE2134350C2 (en) | 1971-07-09 | 1971-07-09 | Telephone system with data traffic |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1351717A true GB1351717A (en) | 1974-05-01 |
Family
ID=5813204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3166472A Expired GB1351717A (en) | 1971-07-09 | 1972-07-06 | Telephone system with data traffic |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT330253B (en) |
AU (1) | AU463795B2 (en) |
BE (1) | BE786045A (en) |
DE (1) | DE2134350C2 (en) |
ES (1) | ES404703A1 (en) |
FR (1) | FR2145947A5 (en) |
GB (1) | GB1351717A (en) |
IT (1) | IT962473B (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT980651B (en) * | 1973-03-21 | 1974-10-10 | Cselt Centro Studi Lab Telecom | CENTRALIZED ELECTRONIC SWITCHING SYSTEM FOR TELEPHONE AND DATA SIGNALS AT HIGH SPEED |
DE2837654A1 (en) * | 1978-08-29 | 1980-03-13 | Siemens Ag | CIRCUIT ARRANGEMENT FOR TELECOMMUNICATION SYSTEMS, ESPECIALLY TELEPHONE EXTENSION SYSTEMS, WITH ADDITIONAL DATA TRAFFIC, e.g. WITH TELEVISION |
FR2441307A1 (en) * | 1978-11-04 | 1980-06-06 | Gl Inf Vychislite | AUTOMATIC SWITCHING METHOD IN A LINK NETWORK AND SWITCHING CENTER IMPLEMENTING SAID METHOD |
DE2912649C2 (en) * | 1979-03-30 | 1981-10-01 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for the transmission of digital signals between transmitting and / or receiving devices operating with different data transmission procedures and with different data formats via a switching system |
DE2938750A1 (en) * | 1979-09-25 | 1981-04-02 | Siemens AG, 1000 Berlin und 8000 München | CIRCUIT ARRANGEMENT FOR TRANSMITTING DIGITAL SIGNALS BETWEEN DIFFERENT DATA TRANSMISSION PROCEDURES AND TRANSMITTERS AND / OR RECEIVING DEVICES WORKING WITH DIFFERENT DATA FORMATS |
GB2098027B (en) * | 1981-04-30 | 1984-11-28 | Standard Telephones Cables Ltd | Telephone exchange |
US4532377A (en) * | 1983-07-18 | 1985-07-30 | At&T Information Systems Inc. | Data call transfer |
US4535199A (en) * | 1983-07-18 | 1985-08-13 | At&T Information Systems Inc. | Data call transfer preindication |
DE3416826C1 (en) * | 1984-05-07 | 1985-09-12 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Circuit arrangement for handling data traffic in a digital time- division multiplex telecommunications system, in particular a telephone switching system |
ATE61897T1 (en) * | 1985-01-17 | 1991-04-15 | Siemens Ag | PROCEDURE FOR TRANSMISSION OF SIGNS BETWEEN A DATA PROCESSING EQUIPMENT AND A TELEPHONE EXCHANGE, IN PARTICULAR A TELEPHONE PBX. |
FR2646303B1 (en) * | 1989-04-25 | 1994-03-18 | Alcatel Cit | COMMUNICATION ADAPTER FOR TELEACTION TERMINAL |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1920677B1 (en) * | 1969-04-23 | 1970-04-23 | Siemens Ag | Circuit arrangement for telecommunications systems in which connection paths can be used for different types of message transmission |
-
0
- BE BE786045D patent/BE786045A/en unknown
-
1971
- 1971-07-09 DE DE19712134350 patent/DE2134350C2/en not_active Expired
-
1972
- 1972-06-29 AU AU44046/72A patent/AU463795B2/en not_active Expired
- 1972-07-06 IT IT2668072A patent/IT962473B/en active
- 1972-07-06 GB GB3166472A patent/GB1351717A/en not_active Expired
- 1972-07-07 FR FR7224600A patent/FR2145947A5/fr not_active Expired
- 1972-07-07 AT AT583472A patent/AT330253B/en not_active IP Right Cessation
- 1972-07-08 ES ES404703A patent/ES404703A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT962473B (en) | 1973-12-20 |
AU4404672A (en) | 1974-01-03 |
FR2145947A5 (en) | 1973-02-23 |
AT330253B (en) | 1976-06-25 |
ES404703A1 (en) | 1975-06-16 |
DE2134350A1 (en) | 1973-03-15 |
ATA583472A (en) | 1975-09-15 |
DE2134350C2 (en) | 1982-02-11 |
AU463795B2 (en) | 1975-08-07 |
BE786045A (en) | 1973-01-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1351717A (en) | Telephone system with data traffic | |
US3335226A (en) | Combined telephone and data switching system | |
GB1288917A (en) | ||
US3629514A (en) | Subscriber{40 s holding circuit | |
GB1283968A (en) | Switching systems | |
US2592784A (en) | Restricted service telephone system | |
GB1001902A (en) | Improvements in or relating to automatic telecommunication exchanges | |
US3133995A (en) | Call awaiting signal telephone circuits | |
US3144517A (en) | Add-on circuit for step-by-step systems | |
US2976368A (en) | Incoming trunk circuit for in-dialing service | |
US2535765A (en) | Two-party metering and line adapter | |
GB1066589A (en) | Telephone switching systems | |
US2200820A (en) | Automatic telephone system | |
US3306983A (en) | Call transfer system | |
GB1326955A (en) | Telephone systems | |
US3320367A (en) | Telephone line circuit | |
US3171898A (en) | Telephone systems | |
US1651017A (en) | Party-line revertible ringing system | |
US3538260A (en) | Dial controlled remote-to-local exchange repeater for a private exchange | |
US1927531A (en) | Telephone system | |
US3417204A (en) | Telephone trunk circuit | |
US2836660A (en) | Interoffice trunking in telephone systems | |
US1688656A (en) | Automatic telephone system | |
US3051792A (en) | Selective party line signaling system | |
US3041405A (en) | Line circuit with two-way transfer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |