DS3, or Digital Signal 3, is a telecommunications standard used to transmit digital data over a network. It is part of the T-carrier system and can carry data at a rate of 44.736 megabits per second. DS3 is commonly used by service providers to deliver high-speed internet and other digital services to businesses and organizations. In a DS3 configuration, multiple DS0 channels can be combined to create a single high-capacity line. This allows for efficient data transmission and supports various applications, including voice, video, and internet services. DS3 lines are often used in data centers and large enterprises for reliable connectivity.