DE69433861D1 - Fernsprechnebenstellen-system mit geschütztem zugang und verfahren - Google Patents

Fernsprechnebenstellen-system mit geschütztem zugang und verfahren

Info

Publication number
DE69433861D1
DE69433861D1 DE69433861T DE69433861T DE69433861D1 DE 69433861 D1 DE69433861 D1 DE 69433861D1 DE 69433861 T DE69433861 T DE 69433861T DE 69433861 T DE69433861 T DE 69433861T DE 69433861 D1 DE69433861 D1 DE 69433861D1
Authority
DE
Germany
Prior art keywords
extension
matching
central office
line
line carrier
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 - Lifetime
Application number
DE69433861T
Other languages
English (en)
Other versions
DE69433861T2 (de
Inventor
B Bartholomew
Ray Ivie
K Schurig
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.)
Gula Consulting LLC
Original Assignee
Phonex 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.)
Filing date
Publication date
Application filed by Phonex Corp filed Critical Phonex Corp
Application granted granted Critical
Publication of DE69433861D1 publication Critical patent/DE69433861D1/de
Publication of DE69433861T2 publication Critical patent/DE69433861T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/54Systems for transmission via power distribution lines
    • H04B3/542Systems for transmission via power distribution lines the information being in digital form
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/54Systems for transmission via power distribution lines
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/71Substation extension arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/02Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022Multiplex systems
    • H04M9/027Frequency division multiplex systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2203/00Indexing scheme relating to line transmission systems
    • H04B2203/54Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5408Methods of transmitting or receiving signals via power distribution lines using protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2203/00Indexing scheme relating to line transmission systems
    • H04B2203/54Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429Applications for powerline communications
    • H04B2203/5437Wired telephone
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2203/00Indexing scheme relating to line transmission systems
    • H04B2203/54Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429Applications for powerline communications
    • H04B2203/5441Wireless systems or telephone
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2203/00Aspects of automatic or semi-automatic exchanges
    • H04M2203/60Aspects of automatic or semi-automatic exchanges related to security aspects in telephonic communication systems
    • H04M2203/609Secret communication
DE69433861T 1993-03-22 1994-03-21 Fernsprechnebenstellen-system mit geschütztem zugang und verfahren Expired - Lifetime DE69433861T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US34086 1979-04-27
US08/034,086 US5530737A (en) 1993-03-22 1993-03-22 Secure access telephone extension system and method
PCT/US1994/003110 WO1994022257A1 (en) 1993-03-22 1994-03-21 Secure access telephone extension system and method

Publications (2)

Publication Number Publication Date
DE69433861D1 true DE69433861D1 (de) 2004-07-29
DE69433861T2 DE69433861T2 (de) 2005-07-28

Family

ID=21874219

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69433861T Expired - Lifetime DE69433861T2 (de) 1993-03-22 1994-03-21 Fernsprechnebenstellen-system mit geschütztem zugang und verfahren

Country Status (13)

Country Link
US (2) US5530737A (de)
EP (1) EP0691059B1 (de)
JP (1) JPH08511381A (de)
KR (1) KR100196492B1 (de)
CN (1) CN1119009C (de)
AT (1) ATE270017T1 (de)
AU (1) AU6766194A (de)
BR (1) BR9406019A (de)
CA (1) CA2155220C (de)
DE (1) DE69433861T2 (de)
ES (1) ES2227526T3 (de)
TW (1) TW321811B (de)
WO (1) WO1994022257A1 (de)

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JP4327747B2 (ja) * 2005-02-21 2009-09-09 双葉電子工業株式会社 非蒸発ゲッターを備えた電子デバイス及びその電子デバイスの製造方法
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US8265249B2 (en) 2007-07-24 2012-09-11 International Business Machines Corporation Changing a state of a remote switch box which connects a phone to a network
US7864035B2 (en) * 2007-10-26 2011-01-04 Embarq Holdings Company, Llc System and method for determining whether a cordless handset is at a base unit
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CN1119009C (zh) 2003-08-20
ES2227526T3 (es) 2005-04-01
JPH08511381A (ja) 1996-11-26
EP0691059A4 (de) 1999-11-24
DE69433861T2 (de) 2005-07-28
TW321811B (de) 1997-12-01
KR100196492B1 (ko) 1999-06-15
WO1994022257A1 (en) 1994-09-29
CN1124078A (zh) 1996-06-05
AU6766194A (en) 1994-10-11
BR9406019A (pt) 1995-12-19
KR960701552A (ko) 1996-02-24
EP0691059B1 (de) 2004-06-23
CA2155220C (en) 1999-08-17
US5530737A (en) 1996-06-25
EP0691059A1 (de) 1996-01-10
US5852785A (en) 1998-12-22
CA2155220A1 (en) 1994-09-29
ATE270017T1 (de) 2004-07-15

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