The total number of TCP segments sent by this device on current connections, explicitly excluding segments containing only retransmitted data. Because retransmissions are excluded, this counter reflects genuinely new outbound data the gateway's own stack is producing, so comparing its growth rate to tcpInSegs shows whether the gateway's own TCP sessions are mostly sending, such as streaming logs out, or mostly receiving, such as pulling configuration updates. Example: tcpOutSegs growing much faster than tcpInSegs on this gateway is consistent with it actively streaming logs to a remote log server rather than mostly listening for inbound management traffic.