A 768Kbps version uses only one twisted pair of copper wires but delivers only half the bandwidth in each direction.However,even at 768Kbps,HDSL is more than sufficient for video conferencing and most data applications.

• 768Kbps变型只用一对双绞铜线，但在每个方向上只给出一半的带宽，然而，即使在768Kbps带宽上，HDSL对电视会议和多数数据应用来说已足足有余。