Title:
TERMINAL INPUT LEVEL MEASUREMENT DEVICE
Document Type and Number:
Japanese Patent JPH0738473
Kind Code:
A
Abstract:
PURPOSE: To obtain a terminal input level measurement device capable of measuring accurately an input level from a terminal equipment to a center without the preparation of an oscillator newly.
CONSTITUTION: When a new terminal equipment 1 is connected to a transmission line 9, a connection request is sent to the terminal equipment 11 and the device is in standby till a connection reply comes from the terminal equipment 11, a level measurement device 13 receives a trigger signal when the connection reply comes to measure the level of the connection reply. When the measured level is not proper, the input level to a center S is made proper by adjusting the output of the terminal equipment 11.
Inventors:
FUNABASHI YASUHIRO
IGAMI KAZUNORI
NISHIMURA OSAMU
HIBINO YOSHIHIKO
KIYOHARA YUJI
YASUTOMO YUICHI
IGAMI KAZUNORI
NISHIMURA OSAMU
HIBINO YOSHIHIKO
KIYOHARA YUJI
YASUTOMO YUICHI
Application Number:
JP18034193A
Publication Date:
February 07, 1995
Filing Date:
July 21, 1993
Export Citation:
Assignee:
BROTHER IND LTD
XING INC
XING INC
International Classes:
H04B3/50; H04N17/00; H04N21/647; (IPC1-7): H04B3/50; H04N7/16; H04N17/00
Attorney, Agent or Firm:
Adachi Tsutomu
Next Patent: FULL DUPLEX COMMUNICATION METHOD