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Digital Signal 3
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<p>Digital Signal 3 (DS3 or T3 line) is a digital signal level 3 <a href="/facts/T-carrier/tCsEdK72">T-carrier</a>. The data rate for this type of signal is 44.736 Mbit/s (45 Mb). It can transport 28 <a href="/facts/Digital_Signal_1/cghJPRpQ">DS1</a> level signals within its payload. It can transport 672 <a href="/facts/Digital_Signal_0/wYRTr8Rl">DS0</a> level channels within its payload. </p><p>Such circuits are the usual kind between <a href="/facts/Telephone_company/zvrL88NE">telephony carriers</a>, both wired and <a href="/facts/Wireless/GfDoFwfo">wireless</a>, and typically by <a href="/facts/OC1/GVABpoYY">OC1</a> optical connections. </p>