DocumentCode
1365094
Title
A robust approach to tele-control using DTMF signaling [telephone call transferring equipment]
Author
Nishi, Hiroyuki ; Shinohara, Shin´ichi ; Umemoto, Hiroki
Author_Institution
NTT, Yokosuka, Japan
Volume
37
Issue
3
fYear
1991
fDate
8/1/1991 12:00:00 AM
Firstpage
572
Lastpage
577
Abstract
A novel method is proposed which is effective in preventing malfunction in the DTMF (dual-tone multifrequency) signal decoder caused by the holding melody. When the monitoring time is one second, the probability of a malfunction is at most 0.01. The proposed approach is a double DTMF signal monitoring method using the statistical characteristics of a DTMF signal decoder for a holding melody
Keywords
signalling (telecommunication networks); telephone station equipment; DTMF signaling; double DTMF signal monitoring method; dual-tone multifrequency signal decoder; holding melody; telephone call transferring equipment; Automatic control; Communication system control; Computer vision; Control systems; Decoding; Frequency; Gas detectors; Monitoring; Robustness; Telephony;
fLanguage
English
Journal_Title
Consumer Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0098-3063
Type
jour
DOI
10.1109/30.85569
Filename
85569
Link To Document