This Signaling Protocol global statistics table.
There is one row in the following table for each
signaling protocol implemented by the managed entity.
There is no row corresponding to the instance
'cpNone'.
If the managed entity implements more than one
signaling protocol, the aggregate statistics
across all the supported signaling protocols
must be computed by the network management station
manually; in other words, there is no conceptual row
in this table corresponding to 'all signaling protocols'.