Title:
集合住宅通話システム
Document Type and Number:
Japanese Patent JP3627921
Kind Code:
B2
Abstract:
An interphone master unit 1 is provided with a means that stores a tone to impart an opportunity of terminating a speech and transmits the tone imparting an opportunity of terminating the speech to a doorphone slave unit 2 during a speech with the doorphone salve unit 2.
Inventors:
Takeshi Ueda
Hiroaki Takeyama
Junji Senoo
Akira Terazawa
Hiroaki Takeyama
Junji Senoo
Akira Terazawa
Application Number:
JP2001047690A
Publication Date:
March 09, 2005
Filing Date:
February 23, 2001
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
H04M1/00; H04M1/64; H04M1/715; H04M1/82; H04M9/00; H04M11/02; H04M11/04; (IPC1-7): H04M9/00; H04M1/00; H04M1/723
Domestic Patent References:
| JP4343557A | ||||
| JP7154470A | ||||
| JP690279A | ||||
| JP5300201A | ||||
| JP10304082A |
Attorney, Agent or Firm:
Hiroyuki Nakai