This read-only INTEGER specifies, network-wide, the rate at which VC statistics are polled; for Portable AutoRoute, actual statistic collection is performed by the platform software. An administrator uses this to understand how frequently traffic and usage counters throughout the network, such as trunk load figures, get refreshed. For example, a slower poll rate means counters like parTrkLineLoad update less frequently, which could delay an operator's visibility into a fast-developing congestion event.