US 6,983,041 B2
Versatile communication device with a facsimile function and a telephone function
Susumu Chida, Ichinomiya (Japan); and Junji Hatamura, Nagoya (Japan)
Assigned to Brother Kogyo Kabushiki Kaisha, Nagoya (Japan)
Filed on Jan. 03, 2005, as Appl. No. 11/25,979.
Application 11/025979 is a division of application No. 09/800732, filed on Mar. 08, 2001.
Claims priority of application No. 2000-063746 (JP), filed on Mar. 08, 2000; and application No. 2000-093382 (JP), filed on Mar. 30, 2000.
Prior Publication US 2005/0111639 A1, May 26, 2005
Int. Cl. H04M 1/00 (2006.01)
U.S. Cl. 379—163 12 Claims
OG exemplary drawing
 
1. A communication device including a telephone device connectable through a telephone line to a remote telephone device, comprising:
an on-hold key that sends an on-hold tone out to the remote telephone device when actuated;
determining means for determining whether or not there is a possibility that the on-hold tone might be detected mistakenly as a communication control signal; and
alerting means for alerting the possibility when said determining means determines that there is such a possibility.