When the FCC released its official document (FCC 14-30A1) in April of 2014, wireless manufacturers were given two years to cease the sale of the old standard 5 Ghz radio spec. This is what led Cisco to shift from the -A part number to the -B part number now present in their wireless access points.
The change from -A to -B is not a simple matter, but this video can help clear up some questions you may have.
As noted in the video, several changes have come about due to the new FCC regulation:
- UNII 1 band adds four channels
- UNII 1 band increases power output by one watt
- Terminal Doppler bands add three channels
- Extra requirements in UNII 3 band
There are several factors we all need to be aware of when it comes to the shift from -A domain to -B domain Cisco access points:
- New controller IOS requirements (8.0.132, 8.2.110, and 8.3.102)
- Loss of compatibility
- -A and -B access points can coexist
- No forced upgrade
Hopefully this helped clear up some questions about the migration to Cisco -B domain access points.