This counts the total number of valid packets transmitted over this specific pseudowire service instance. Comparing TxPkt on this PW against the remote end's RxPkt (where visible) is how an admin estimates one-way packet loss across the network path carrying this specific service -- and this specific object covers the current, still-open 24-hour interval -- the earliest daily-scale warning available before the full day's history bin closes. For example, so far in the current, still-running 24-hour interval, this pseudowire might show this counter at 4525000 -- a concrete count the admin can trend against neighboring bins to judge whether the condition it reflects is worsening.