Study of the Improvement of Fixed Telephone Based on the CAS
Hai Dong Lei · Advanced materials research · 2012
In this paper, based on the traditional fixed telephony features to increase the short message processing module. To meet the voice communication between users, the fixed telephone can realize mutual development between the SMS function .The main telephone lines in the completion of the CAS signal detection, and traditional communications in FSK and DTMF signal reception and transmission.