Cambium Networks PTP 820 Series User Manual page 967

Chapter 21: TDM Services and Interfaces (CLI)
Parameter Input Type
timing-mode Variable
clk-src-ref Variable
Permitted Values Description
loop The clock reference for the outgoing TDM signal
absolute from the port. Options are:
clock-recovery
loop
incoming lines. By default, each port is its will
take itself as a reference.
absolute
single common clock, as defined by the clk-src-ref
parameter.
clock-recovery
Clock information is included in the TDM data
stream at the point where the data is frameized.
Extra information may be located in an RTP
header that can be used to correct frequency
offsets. The clock information is extracted at the
point where the frames are received and
reconverted to TDM. The extracted clock
information is used for the reconversion to TDM.
If you configure the
recovery
parameter to configure the clock source
reference port.
none If
front-panel parameter to configure the clock source
sys-ref-clk reference for the port. Options are:
front-panel
from a dedicated front panel clock interface. This
can be:
An E1/DS1 line, or
A Digital 2.048MHz/1.544MHz input
sys-ref-clk
reference clock defined for the entire unit.
If the
clock-recovery
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Page 21-6
Configuring TDM Cards and Interfaces (CLI)
– The output signal uses the clock of the
– All ports are synchronized to a
– Adaptive Clock Recovery.
timing-mode
, you must use the clk-src-ref-port
timing-mode is set to absolute
– An external clock reference
– Clock is taken from the system
parameter is set to
timing-mode
, set this parameter to
as
clock-
, use this
or
loop
.
none