097-58001-02 Revision G – April 2008
TimeProvider User’s Guide 105
Chapter 4 Provisioning the TimeProvider
Provisioning the IOC
Provisioning the IOC
This section describes how to provision the IOC.
Setting the System Mode
The SET-SYS-MODE command allows you to provision the operating mode of the
TimeProvider to one of the following:
SSU – Synchronization Supply Unit: provides filtering compliant with G.812 and
GR-1244
SUB – Subtending mode: provides composite clock input tracking compliant with
GR-378
PRR – Primary Reference Receiver mode: provides ITU-T G.811 and Telcordia
GR-2830 requirements for Primary Reference Receivers/Clocks
In the SSU mode, you can select the system reference from signals on the GPS,
PRS, INP1, or INP2 connectors.
In the SUB mode, the PRS input is set to Monitor only; you can select the system
reference from signals on the INP1 or INP2 connectors. You can provision these
inputs to Composite Clock signal types only when the TimeProvider is in SUB mode.
In the PRR mode, the antenna provides GPS signals as the primary reference.
When enabled and qualified, the PRS, INP1, and INP2 signals are used as part of
the BesTime algorithm only to enhance the stability of the output signals. If the GPS
input is lost when in PRR mode, the TimeProvider enters the Holdover mode even if
qualified signals are present on the other inputs.
Setting the System Mode
Use the SET-SYS-MODE command to provision the TimeProvider’s operating
mode. See
Operating Modes
, on page 23, for more information on how the
operating mode affects the TimeProvider’s inputs and outputs.
SET-SYS-MODE:[<tid>]::[<ctag>]::<keyword>=<value>;
This command has a default access level of ADMIN.
<keyword>
<value>
Description
Default value
SYSMODE
SSU
Set the TimeProvider to SSU operating mode
PRS – Priority 1 and Enabled
INP1 – Priority 2 and Enabled
INP2 – Priority 3 and Enabled
GPS – Disabled and can be enabled
SSU
