RFP: FA4800 Considerations
Chapter 10
FA4800 User Manual
Release 1.9.30
10-12
RFP: FA4800 Considerations
• When FA4800 radios are collocated with FibeAir 2000 radios using
HSS, all radios must use RFP B or E.
• The performance of FA4800 radios that operate with these RFPs can
be seen in the Link Budget Calculator.
• The choice of the unit to be the HSS master is a matter of conve-
nience. There is no technical reason to prefer a FA4800 over a
FibeAir 2000 as HSS master or vice versa. It is however, recom-
mended that you use the FibeAir 2000 as master, since it will enforce
the correct RFP on the other collocated units.
The following list summarizes the effect of using RFP B or E on FA4800
radios. These effects should be taken into consideration when planning new
installations:
• Channel bandwidth 5 MHz is available under RFP E but is only sup-
ported for FA4800 Access products
• For products supporting a maximum throughput of 18.1 Mbps, the
maximum Ethernet throughput is 14.5 Mbps at 20 MHz channel
bandwidth and 9.3 Mbps at 10 MHz channel bandwidth
• For products supporting maximum throughput of 22.5 Mbps, the
maximum Ethernet throughput is 21.4 Mbps at the 20 MHz channel
and 9.3 Mbps at 10 MHz channel bandwidth
Table 10-4: Asymmetric Allocation with Collocated Links - Scenarios
HSS Master
HSS Client
Scenario: If you try to... Result
Remarks
FibeAir 2000
FA4800
Change master to
asymmetric allocation
Link down
Reversion to 50/50 restores link
FibeAir 2000
•
Releases prior to 2.4 -
Link down
•
Release 2.4 later
(FibeAir 2000 10T and
FibeAir 2000 50 series)
- Link down
•
Release 2.4 and later
(FibeAir 2000 100
series) - TDM services
stopped, link set to
transmission ratio of
master
Release 2.4 and later (FibeAir
2000 100 series) - Asymmetric
Allocation slider visible but
cannot be changed
FibeAir 2000
FA4800
FibeAir 2000
Change client to
asymmetric
Asymmetric Allocation slider
not displayed
You cannot do this
FA4800
FA4800
FibeAir 2000
Change client to
asymmetric
Asymmetric Allocation slider
not displayed
You cannot do this
