| Description | Initial transmit data rate for this call.
If call is a synchronous digital call such as ISDN sync,
this value is the data rate of the B-channel.
If call is asynchronous, even if using a synchronous
transmission medium such as ISDN, the value is
determined by the resource providing the asynchronous
processing. For modem calls, this value corresponds to
the value of cmTXRate from CISCO-MODEM-MGMT-MIB,
immediately after the modem has completed initial
negotiations.
This value does not change, even if the data rate varies
during the call.
This value will be zero if the call terminated prior to
an initial data rate determination. |