Someone announc something please
Like openbsd beta release for n900

Why do you want openbsd on your N900. What are you missing?

obviously, they'll want access to the encoding, so they can dutifully decode it ¦-))))))))))
:-{

typo i meant like open bts

i want something to communicate when in no network area and the gsm radio is the most powerful radio in the n900 so cant it be exploited in some way? That would be useful

Read back what I said before about DL and UL bands.

@nokiabot, to put it simply:

DL = downlink
UL = uplink
DL band = range of frequencies that the base station uses to transmit to the handsets
UL band = range of frequencies that the handsets use to transmit to the base station

(See also http://en.wikipedia.org/wiki/GSM_frequency_bands.)

In other words, your phone transmits at one frequency band and receives at another. To make a peer-to-peer link, one of the phones would have to swap bands which, as juiceme says, is impossible.

VoIP over an ad-hoc WLAN would work but is quite limited in range. Mind you, so would be GSM. The base stations ("towers") are at elevated positions and have much higher power output (and possibly better antennas allowing a more sensitive input) than the handsets. A handset can talk to a tower 20-30 km away in an open terrain, but two handsets at ground level would struggle to achieve more than 1-2 km [citation needed]. Granted, better than WLAN but perhaps less than what you'd expect.

Thanx pichlo for the explanation anyway my plans are doomed i just wanted a 300 square metere network of my own for media purpose with a single base .

Hmm.. WLAN?

300 square meters is not much (~17.5m x ~17.5m) and WLAN is fully sufficient... Maybe he wanted to say 300m x 300m?

No guys its 300 suare meters but with wifi?? How m new but i found out i could achieve atmost 50 to 100 meters