JPH03823B2 - - Google Patents

Info

Publication number
JPH03823B2
JPH03823B2 JP57159051A JP15905182A JPH03823B2 JP H03823 B2 JPH03823 B2 JP H03823B2 JP 57159051 A JP57159051 A JP 57159051A JP 15905182 A JP15905182 A JP 15905182A JP H03823 B2 JPH03823 B2 JP H03823B2
Authority
JP
Japan
Prior art keywords
voltage
output
telephone
telephone line
circuit
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
JP57159051A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5860861A (ja
Inventor
Ii Hansukomu Buratsudofuoodo
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.)
TAD AVANTI
Original Assignee
TAD AVANTI
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 TAD AVANTI filed Critical TAD AVANTI
Publication of JPS5860861A publication Critical patent/JPS5860861A/ja
Priority to US06/544,611 priority Critical patent/US4646186A/en
Publication of JPH03823B2 publication Critical patent/JPH03823B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/654—Telephone line monitoring circuits therefor, e.g. ring detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP15905182A 1982-05-24 1982-09-14 電話応答装置の監視装置 Granted JPS5860861A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06/544,611 US4646186A (en) 1982-09-14 1983-10-24 Cassette tape recorder with plural tape guide structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38118582A 1982-05-24 1982-05-24
US381185 1982-05-24

Publications (2)

Publication Number Publication Date
JPS5860861A JPS5860861A (ja) 1983-04-11
JPH03823B2 true JPH03823B2 (enrdf_load_stackoverflow) 1991-01-09

Family

ID=23504036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15905182A Granted JPS5860861A (ja) 1982-05-24 1982-09-14 電話応答装置の監視装置

Country Status (2)

Country Link
JP (1) JPS5860861A (enrdf_load_stackoverflow)
GB (2) GB2121648B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60256236A (ja) * 1984-06-01 1985-12-17 Hashimoto Corp 不在応答録音機能を有するコ−ドレスホ−ン

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA952634A (en) * 1971-01-18 1974-08-06 Robert F. Mcalonie Tone ringer
JPS5220283B2 (enrdf_load_stackoverflow) * 1973-08-08 1977-06-02
JPS5916457B2 (ja) * 1976-05-06 1984-04-16 パイオニア株式会社 起動回路
IT1083388B (it) * 1977-06-20 1985-05-21 Cselt Centro Studi Lab Telecom Suoneria elettronica per apparecchi telefonici
GB1594765A (en) * 1978-03-09 1981-08-05 Ansafone Ltd Telephone answering machines

Also Published As

Publication number Publication date
GB8527469D0 (en) 1985-12-11
GB2121648B (en) 1986-12-03
GB2166926A (en) 1986-05-14
GB2121648A (en) 1983-12-21
JPS5860861A (ja) 1983-04-11
GB2166926B (en) 1986-11-26

Similar Documents

Publication Publication Date Title
US4626630A (en) Telephone call forwarding device
US5805687A (en) Subscriber equipment muting method and apparatus
US4156799A (en) Automatic disconnect circuit
US4074081A (en) Apparatus for detecting the level of direct current or voltage on a telephone line
US4969178A (en) Multipurpose subscriber local line monitoring device
US4451707A (en) Ring detector and telephone line monitoring system for telephone answering instrument
US5218635A (en) Low-frequency alternating current signal detector, in particular for central office line interface circuits
US5920624A (en) Telephone ring signal detector
US3962546A (en) Malfunction detection and changeover apparatus for data communications system
US4484036A (en) Telephone ring detector system
US3936617A (en) Code-controlled ringer attachment for telephones
US4525603A (en) Ring and line monitor for answering machine
JPH03823B2 (enrdf_load_stackoverflow)
US3529087A (en) Automatic line releasing apparatus
US4759052A (en) Telephone answering device using voice synthesizer for outgoing message
CN1029062C (zh) 用于电话应答机的自动断开特征的检测器
US4920561A (en) Ring detector for telephone line
US4435619A (en) Switching network interfacing telephone-exchange equipment with two-subscriber party line
JPH05130650A (ja) 有線回線におけるオンフツクトランスミツシヨン回路
CA2186838C (en) Subscriber equipment muting method and apparatus
US4582958A (en) Secretary telephone system
KR900000840B1 (ko) 국선종류 및 국선사용 회선 자동 감지회로
JPH0741236Y2 (ja) 呼出し信号検出回路
JPS6145664A (ja) リングトリツプ回路
JPS623552A (ja) 留守番電話装置