318 TimeProvider 5000 User’s Guide 098-00028-000 Revision F – May, 2012
Chapter 4 Provisioning
Provisioning the Programmable E1/T1 Inputs
Provisioning the Programmable E1/T1 Inputs
Two I/O ports on the I/O module (versions 090-50311-01, 090-50312-01, and
090-50315-01), Port1 and Port 2, are software configurable as E1 inputs. Two
RJ-48 I/O ports on the I/O module (p/n 090-50314-01), Port1 and Port 2, are
software configurable as T1 inputs. The “set io” command is used to set Ports 1 and
2 as inputs. See Figure 4-22. The “set input” command is used to provision the ports
as E1 or T1 inputs. See Figure 4-23.
Figure 4-22. Set IO Command Hierarchy
Figure 4-23. Set Input Command Hierarchy
Synchronization Status Message (SSM)
Synchronization Status Message (SSM) is a means by which elements in a
synchronization network can communicate the traceability of their sync quality level.
SSM is only supported for the frametypes ESF, CAS with CRC4 and CCS with CRC4. SSM
should not be enabled for other input frame types. The messages will be decoded and used
for reference input qualification if SSM is enabled for the input port.
If SSM is enabled for an input port and the frametype does not support SSM or is
not sending a valid SSM, then the input will be disqualified and the input SSM-value
will be set to 15 (invalid). If there is not another qualified reference to switch to, the
system will go to holdover.
See Table 4-16 for examples.
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