User's Manual

Table Of Contents
Chapter 4 - Operation and Administration
receive an IR lower than the CIR designated for subscribers in a lower CIR
y. If no data is received from
the Ethernet port during the last N seconds, the unit is allowed to transmit N
out any delay. For example, after a period of inactivity of
128 Kbps can transmit up to 128 Kbits x 0.5 =
64 Kbits without any delay.
4.2.6.6.2.1 MIR:
n Rate of the downlink from the AU to the SU. The
4.2.6.6.2.2
Information Rate of the up-link from the SU to the AU. The
MIR value cannot be lower than the corresponding CIR value.
8 Kbps.
4.2.6.6.2.3
The
o 45056 Kbps.
8
bracket.
A special algorithm for graceful degradation is incorporated into the AU, ensuring
that the degradation of performance for each individual Subscriber Unit is
proportional to its CIR.
The MIR/CIR algorithm uses buffers to control the flow of data. To balance the
performance over time, a special Burst Duration algorithm is employed to enable
higher transmission rates after a period of inactivit
times its CIR value with
0.5 seconds, a unit with CIR =
Downlink (SU only)
Sets the Maximum Informatio
MIR value cannot be lower than the corresponding CIR value.
Available values range is from 128 to 53888 Kbps.
The default is 53888 Kbps.
The actual value will be the entered value rounded to the nearest multiple of 128
(N*128).
MIR: Uplink (SU only)
Sets the Maximum
Available values range is from 128 to 5388
The default is 53888 Kbps.
The actual value will be the entered value rounded to the nearest multiple of 128
(N*128).
CIR: Downlink (SU only)
Sets the Committed Information Rate of the downlink from the AU to the SU.
CIR value cannot be higher than the corresponding MIR value.
Available values range is from 0 t
The default is 0 Kbps.
The actual value will be the entered value rounded to the nearest multiple of 12
(N*128).
BreezeACCESS 4900 System Manual
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