Title:
TERMINAL REPEATER USED FOR CHARGE COLLECTION LINE
Document Type and Number:
Japanese Patent JP3670713
Kind Code:
B2
Abstract:
PURPOSE: To prevent production of disturbance or mis-processed data signals to be sent/received due to a charge collection signal or a dial signal or the like of a telephone terminal connected in parallel when the CAPTAIN service or the like is received through the use of a charge collection line.
CONSTITUTION: A data terminal equipment 5 such as a CAPTAIN(character and pattern telephone access information network) terminal equipment is connected to a charge collection line 21 via a transformer of a trunk line pseudo line connection display section 36 blocking propagation of a charge collection signal. Thus, the propagation of the charge collection signal due to inverted polarity of the line 21 is blocked to prevent the effect onto data sent/received by the data terminal equipment 5. When the data terminal equipment 5 makes dialing, the call is detected by a pseudo trunk line loop detection section 37 and a trunk line connection section 35 closes the line 21. The trunk line loop detection section 33 detects the closing and a trunk line interrupt section 32 opens a path of a telephone set 4. Thus, even when the telephone set 4 makes mis-dialing, data received/sent by the data terminal equipment 5 are not affected.
Inventors:
Kenichi Asao
Application Number:
JP12204095A
Publication Date:
July 13, 2005
Filing Date:
May 22, 1995
Export Citation:
Assignee:
East Nippon Telegraph and Telephone Corporation
West Nippon Telegraph and Telephone Corporation
West Nippon Telegraph and Telephone Corporation
International Classes:
H04M17/00; H04M11/00; (IPC1-7): H04M11/00
Attorney, Agent or Firm:
Tsuyoshi Hashimoto
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