sessionStatusActiveTxStartDataRate 1.3.6.1.4.1.2637.2.2.102.1.39

The transmit DCE data rate for this session. In the case of modem sessions, this will be the DCE rate reported as a result of initial modem negotiation, and may not track rate chanes during the call. For ISDN sessions, this will be the actual data service rate of the call. For Frame Relay sessions, this will be the nominal speed of the Frame Relay Physical Interface, even though multiple sessions may be sharing that Physical Interface. For other sessions, this will be the nominal speed of the physical interface. In no case should this be interepreted as a Quality-of-Service guarantee, or as the current line utilization or effective bandwidth on the interface. Note also that in the case of PPP multilink, this specifies the rate of only this link in the bundle, and not the aggregate rate of all links in the bundle.