At times the user might want to lock the DTE speed to complete a connection. Locking the DTE
speed can provide better performance on degraded lines if the speed is locked to a value lower
than would otherwise be possible—a result of fewer retransmissions to cope with the errors. For
most connections, this step is unnecessary.
To lock the DTE speed, select the Only Connect at This Speed box in the Modem Properties
dialog box, as shown in Figure 25.12. Recall that this is DTE-to-DCE speed, and as such, it
should relate to the capacity of the DCE device, as defined in Chapter 23.