Configuring the CBR Module 127
Figure 97 Configuring the CBR Serial Port
4 Set the following port configuration parameters as desired:
SCT Clock Source—The type of input clock service configured for the port
interface.
Recovered—A non-required network-wide synchronization technique used to
regenerate the input service clock. Adaptive timing uses a buffer depth
indicator at the receiver to adjust the line rate: the fuller the buffer, the faster
the line rate; the emptier the buffer, the slower the line rate.
Internal—Configures the port interface to use the internal clock as the timing
source.
SCR Clock Source—The type of output clock service configured for the port
interface.
Internal—Configures the port interface to use the internal clock as the timing
source.
Adaptive—A non-required network-wide synchronization technique used to
regenerate the input service clock. Adaptive timing uses a buffer depth
indicator at the receiver to adjust the line rate: the fuller the buffer, the faster
the line rate; the emptier the buffer, the slower the line rate.
SCTE Clock Source—The Rx timing source for the serial interface: Echo Clock
from DTE or DCE Transmit Clock.
SCTE Clock Phase Control—Receive timing phase control. This parameter applies
only when the attached cable is DCE type cable. Depending on the speed of the
device application and the clock phases, particularly those of the return clock, you
may have to set SCTE Clock Phase Control to Inverted (invert the clock) to ensure
correct clock and data phase.
Normal—The receive timing from the remote endpoint (node) is normal
clocking.
Inverted—The receive timing from the remote endpoint (node) is inverted
clocking.
56K/64K Mode—The T1 DSU/CSU mode to be emulated: 56k Mode (n x 56) or
64k Mode (n x 64).
