cctActiveCallId 1.3.6.1.4.1.9.9.163.1.2.3.1.1

Represents a Call Identifier. The call identifier is a monotonically increasing unsigned integer which uniquely identifies the call within the system. The Call ID is represented as an unsigned 32-bit integer. After 4,294,967,295 calls, the ID will wrap and the 4,294,967,296th call will receive the next smallest available id starting from 1. Zero is not a valid value.