Title:
COMMUNICATION TERMINAL SET
Document Type and Number:
Japanese Patent JPH01168155
Kind Code:
A
Abstract:
PURPOSE: To avoid waste of operation and to improve the line efficiency by allowing a monitor means to monitor a free information channel when all information channels are busy and allowing a call means to make a call when a free channel is found out.
CONSTITUTION: When a few lines are used by plural terminal sets and all information channels are busy, a monitor means is provided to monitor a free information channel and a call means is provided to make a call when the monitor means finds out a free channel. Then the operating state of channels is monitored and redialing is applied automatically at a point of time when a channel is free. Thus, the operator's load is relieved and the line efficiency is improved.
Inventors:
NAKATSUMA TAKUJI
Application Number:
JP32531387A
Publication Date:
July 03, 1989
Filing Date:
December 24, 1987
Export Citation:
Assignee:
CANON KK
International Classes:
H04M11/00; H04Q5/00; H04Q11/04; (IPC1-7): H04L11/02; H04M11/00; H04Q5/00
Domestic Patent References:
| JPS61280140A | 1986-12-10 |
Attorney, Agent or Firm:
Yasunori Otsuka (1 person outside)