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When the CO and CP units connect over DSL, the CP will enter a pre-
defined default configuration (Receive Recovered Clocking). During the
negotiation process between the units, the CO unit will configure the
DTE rate/line rate on the CP unit as defined by the settings of the CO
unit. When additional bandwidth is required, only the configuration of the
CO unit should be changed. This feature gives ISPs, LECs and PTTs the
ability to provision bandwidth on an as-needed basis to customers.