In SDH and SONET standards, a Virtual Tributary (VT) that operates at 1.544 Mbps, which is the signaling rate of a T1. See also SDH, signaling rate, SONET, T1, and VT.
"VT1.5." YourDictionary, n.d. Web. 11 October 2018. <http://www.yourdictionary.com/vt1-5>.
VT1.5. (n.d.). Retrieved October 11th, 2018, from http://www.yourdictionary.com/vt1-5
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