Question: what is the difference between e1 and t1?
Answer: Data Rate: The main difference is the data rate. T1 has a data rate of 1.544 mbps and E1 has a data rate of 2.048 mbps. Copper Delivery: In the T1 signal there is a copper delivery among 4 wires. ... In the E1, there are two types of physical delivery; balanced physical delivery and unbalance physical delivery.