The extended synchronous connection-oriented (eSCO) logical transport is a symmetric or asymmetric, point-to-point transport between the Central and a specific Peripheral. The eSCO reserves slots on the physical channel and can therefore be considered as a circuit-switched connection between the Central and the Peripheral. eSCO links offer a number of extensions over the standard SCO links, in that they support a more flexible combination of packet types and selectable data contents in the packets and selectable slot periods, allowing a range of synchronous bit rates to be supported.

扩展同步连接导向（eSCO）逻辑传输是中央设备和特定外围设备之间的对称或非对称点对点传输。eSCO在物理信道上保留插槽，因此可以被认为是中央设备和外围设备之间的电路交换连接。eSCO链路相对于标准SCO链路提供了许多扩展，因为它们支持更灵活的数据包类型和可选择的数据内容以及可选择的插槽周期，从而允许支持一系列同步比特率。