This read-only integer reports the Transmitted Average Information Rate in kilobits per second for the connection's egress traffic. An administrator monitors this as a real-time bandwidth-usage gauge for outbound traffic, comparing it against the connection's configured cir or chanEgrSrvRate to judge whether the channel is running near its committed rate. For example, an xmtKbpsAIR value that regularly approaches the channel's configured chanEgrSrvRate would suggest the connection's egress side is running close to fully utilized.