This attribute specifies the default Allowed Cell Rate Decrease
Time Factor (ADTF) parameter for ABR connections. An override
to this default may be specified for a provisioned connection under
the Vcd Tm Abr or Vpd Tm Abr component, or signalled in the ABR
Additional Parameters Information Element.
ADTF is the time interval permitted between sending forward
Resource Management (F-RM) cells before the Allowed Cell Rate
(ACR) is decreased to the Initial Cell Rate (ICR). In other words, if
the source does not transmit a forward RM cell for a period of
ADTF centi-seconds (hundredths of a second), it will reduce its
ACR to the value of its ICR. If ACR is already at or below ICR,
further rate reductions are defined by the CRM ABR parameter.