In the history of smartphones, never before had such a tone been heard at such a volume. In Android, specifically on Google-made smartphones, there's a sound that's played at the end of any phone call ...

The M-991 is a call progress tone generator integrated circuit for use in telephony systems. The circuit uses low-poser CMOS techniques to generate tones which are digitally controlled and highly ...

2014-06-27T07:58:28-04:00https://images.c-span.org/Files/b69/20140627075925001_hd.jpgTone has sickle cell anemia and prefers to use marijuana to ease his pain rather ...

Do you miss your old iPhone ringtones? Do you long for the sound of the Marimba and Xylophone over your iPhone speakers when you receive an incoming call? We’ll show you how to get your old iPhone ...

Even though email and other computer-based communications have taken precedence in business, telephone communications continue to be a primary means. Many customers, contractors and institutions ...