TELEPHONE LINE INTERFACE CIRCUIT
A circuit for coupling digital or analog data signals to a telephone line. A direct coupled transistorized circuit is disclosed having three different impedance conditions: on-hook, off-hook, and loop-test. Consequently, data can be transmitted regardless of the on-hook or off-hook status of the ass...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | CHARLES H. HUSTIG C. RAY BALLARD DONALD W. MOSES |
| description | A circuit for coupling digital or analog data signals to a telephone line. A direct coupled transistorized circuit is disclosed having three different impedance conditions: on-hook, off-hook, and loop-test. Consequently, data can be transmitted regardless of the on-hook or off-hook status of the associated telephone sets and regardless of whether or not the telephone sets are in use. In addition, data transmission can range over a frequency spectrum of approximately d-c to frequencies in the data-over-voice range. Because of the variable bridging impedance, the drive impedance is not too low during on-hook ringing and the circuit need not be disconnected during ringing or testing. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_AU555117BB2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>AU555117BB2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_AU555117BB23</originalsourceid><addsrcrecordid>eNrjZFAIcfVxDfDw93NV8PEEEp5-Ia5Bbo7OrgrOnkHOoZ4hPAysaYk5xam8UJqbQcHNNcTZQze1ID8-tbggMTk1L7Uk3jHU1NTU0NDcycnImAglALPfIZk</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>TELEPHONE LINE INTERFACE CIRCUIT</title><source>esp@cenet</source><creator>CHARLES H. HUSTIG ; C. RAY BALLARD ; DONALD W. MOSES</creator><creatorcontrib>CHARLES H. HUSTIG ; C. RAY BALLARD ; DONALD W. MOSES</creatorcontrib><description>A circuit for coupling digital or analog data signals to a telephone line. A direct coupled transistorized circuit is disclosed having three different impedance conditions: on-hook, off-hook, and loop-test. Consequently, data can be transmitted regardless of the on-hook or off-hook status of the associated telephone sets and regardless of whether or not the telephone sets are in use. In addition, data transmission can range over a frequency spectrum of approximately d-c to frequencies in the data-over-voice range. Because of the variable bridging impedance, the drive impedance is not too low during on-hook ringing and the circuit need not be disconnected during ringing or testing.</description><edition>4</edition><language>eng</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; SELECTING ; TELEPHONIC COMMUNICATION</subject><creationdate>1986</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860911&DB=EPODOC&CC=AU&NR=555117B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860911&DB=EPODOC&CC=AU&NR=555117B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CHARLES H. HUSTIG</creatorcontrib><creatorcontrib>C. RAY BALLARD</creatorcontrib><creatorcontrib>DONALD W. MOSES</creatorcontrib><title>TELEPHONE LINE INTERFACE CIRCUIT</title><description>A circuit for coupling digital or analog data signals to a telephone line. A direct coupled transistorized circuit is disclosed having three different impedance conditions: on-hook, off-hook, and loop-test. Consequently, data can be transmitted regardless of the on-hook or off-hook status of the associated telephone sets and regardless of whether or not the telephone sets are in use. In addition, data transmission can range over a frequency spectrum of approximately d-c to frequencies in the data-over-voice range. Because of the variable bridging impedance, the drive impedance is not too low during on-hook ringing and the circuit need not be disconnected during ringing or testing.</description><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>SELECTING</subject><subject>TELEPHONIC COMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1986</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAIcfVxDfDw93NV8PEEEp5-Ia5Bbo7OrgrOnkHOoZ4hPAysaYk5xam8UJqbQcHNNcTZQze1ID8-tbggMTk1L7Uk3jHU1NTU0NDcycnImAglALPfIZk</recordid><startdate>19860911</startdate><enddate>19860911</enddate><creator>CHARLES H. HUSTIG</creator><creator>C. RAY BALLARD</creator><creator>DONALD W. MOSES</creator><scope>EVB</scope></search><sort><creationdate>19860911</creationdate><title>TELEPHONE LINE INTERFACE CIRCUIT</title><author>CHARLES H. HUSTIG ; C. RAY BALLARD ; DONALD W. MOSES</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_AU555117BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1986</creationdate><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>SELECTING</topic><topic>TELEPHONIC COMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>CHARLES H. HUSTIG</creatorcontrib><creatorcontrib>C. RAY BALLARD</creatorcontrib><creatorcontrib>DONALD W. MOSES</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>CHARLES H. HUSTIG</au><au>C. RAY BALLARD</au><au>DONALD W. MOSES</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>TELEPHONE LINE INTERFACE CIRCUIT</title><date>1986-09-11</date><risdate>1986</risdate><abstract>A circuit for coupling digital or analog data signals to a telephone line. A direct coupled transistorized circuit is disclosed having three different impedance conditions: on-hook, off-hook, and loop-test. Consequently, data can be transmitted regardless of the on-hook or off-hook status of the associated telephone sets and regardless of whether or not the telephone sets are in use. In addition, data transmission can range over a frequency spectrum of approximately d-c to frequencies in the data-over-voice range. Because of the variable bridging impedance, the drive impedance is not too low during on-hook ringing and the circuit need not be disconnected during ringing or testing.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_epo_espacenet_AU555117BB2 |
| source | esp@cenet |
| subjects | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY SELECTING TELEPHONIC COMMUNICATION |
| title | TELEPHONE LINE INTERFACE CIRCUIT |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-09T22%3A49%3A21IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=CHARLES%20H.%20HUSTIG&rft.date=1986-09-11&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EAU555117BB2%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |