Title:
RECORDING AND DISPLAYING METHOD FOR FAILURE HISTORY OF LINK SETUP BY CORDLESS TELEPHONE SET
Document Type and Number:
Japanese Patent JP3218497
Kind Code:
B2
Abstract:
PURPOSE: To easily find out a defect by devising the method such that at which stage of the link setup of a failure and at what ratio the failure happens is recognized in a time-series manner based on the number of times of buzzing of a buzzer at the time of maintenance.
CONSTITUTION: When a slave set receives a call signal including a designation signal of a speech channel from a master set in the standby state of the slave set, a CPU 9 controls a composer 4 to transit to a speech channel designated by the master set and to check an electric field strength of the speech channel thereby discriminating whether or not the designated speech channel is idle. When the speech channel is closed, it is discriminated to the a failure of link setup and it is stored in an EEPROM 6. When the slave set does not receive a ring signal within a prescribed period after transmission of a speech channel affirmative signal, it is discriminated to be a failure of link setup and it is stored in an EEPROM 6. When a prescribed button of an operation section 7 is depressed in the standby state of the slave set, the CPU 9 reads out data at which stage the failure happens from the EEPROM 6 finally.
Inventors:
Hideo Nakagawa
Junya Konno
Yoshikazu Tanahashi
Yoshinari Nemoto
Junya Konno
Yoshikazu Tanahashi
Yoshinari Nemoto
Application Number:
JP33485494A
Publication Date:
October 15, 2001
Filing Date:
December 20, 1994
Export Citation:
Assignee:
Kanda Communication Industry Co., Ltd.
Nippon Telegraph and Telephone Corporation
Nippon Telegraph and Telephone Corporation
International Classes:
H04M1/00; H04M1/725; H04W24/02; H04W88/08; (IPC1-7): H04Q7/38; H04M1/725
Domestic Patent References:
| JP63224418A |