I'm a little bit confused about the different statements in case of the transmit power for wlan phones (7925G, 7921G)
and LWAP (1252agn) working with an 4402 WLC (6.0.196) in the 5 Ghz band.
In the actual version of the 792x Deployment Guide they speak about a maximum transmit power of the phone of 16 dbm (40 mw).
At the same time the AP is able to transmit at a maximum of 17 dbm (50 mw) in European domain.
Now when i connect to the web gui of a wlan phone and look at the wlan info, there is shown a tx power of 17 dbm.
Furthermore when i watch the network profiles => advanced config, there is also shown a max tx power of 17 dbm.
In the end, since we've upgraded our WLC to 6.0.196, there are only 5 power levels left which can be set manually via the TPC on the WLC,
but when configuring a single AP via the WLC's web gui there are 7 power levels available.
1) What is the max. tx power of the 7921G / 7925G? Is it 16dbm or 17 dbm
2) If it is 16 dbm. Why is it shown as 17 dbm in the phone's web gui? And wouldn't it be better to reduce the AP to 16 dbm as well,
so that the tx power of the phone and AP are matching? Or increasing the phone's tx power to 17 dbm?
3) What are the 5 power level, which can be set manually via the TPC of the WLC, are standing for? 1 = 17 dbm, 2 = 14dbm, .......
Thanks for anwering all these questions,
OK, this may get a bit tricky. If look at table 4-8 in the following link. You can see that the maximum tx power is based on the channel and also on how many of the tx radios are enabled. So both 16 and 17dBm are valid.