The number of times that the modem changes the connectivity
state from 'offline' to 'online' over the time period from
the modem's first ranging message received by CMTS until
now.
The modem is considered as 'online' when the value for
cdxCmtsCmStatusValue is any of the values: online(5),
onlineNetAccessDisabled(6), onlineKekAssigned(7), and
onlineTekAssigned(8), and the modem is considered as
'offline' for other values for cdxCmtsCmStatusValue.