Synchronous Connections

Synchronous connections use independent clocking signals to synchronize the data transmission. They provide a permanent connection between two endpoints, and are typically established over dedicated leased-lines.

You pay for the synchronous connection for the duration of the lease and the cost is independent of the quantity of data transmitted. For these reasons, synchronous connections are best suited to continuous data traffic and are used typically for LAN-to-LAN interconnectivity and bulk transfers of information as shown in Figure 1-2.

Figure 1-2 Synchronous Connection between LANs.

The synchronous connection is established through a synchronous serial interface installed in the host machine. The synchronous connection is established when Solstice PPP is started; therefore, there is no independent connection phase when a PPP link is established over a synchronous connection. Refer to the Solstice PPP 3.0.1 Installation Guide and Release Notes for a list of the synchronous serial interfaces with which Solstice PPP has been tested.