Hello Paul,
> Hi,
>
> Firstly - the goals of your project are wonderful. Well done and good luck.
> I'm in Canada and the forest fire situation can lead to some communications
> issues. A project such as yours would be very useful.
Thank you -- we hope that it will indeed be useful in such situations.
> Secondly, I'm looking for a solution to provide VoIP over WiFi that can
> provide fast handover (without dropping live VoIP calls) and use 'cheap'
> cell phones, (Nokia / Android /etc).
>
> I appreciate this may not be what Serval was intended for, but can Serval
> support this kind of environment - roaming between access points and
> maintaining calls?
This is something that we intend to support, but haven't quite got there.
Having said that, once we have the 0.09 release out in a few weeks,
all the groundwork will be there to support this.
The caveat is that the trick that we intend to use for doing this has
yet to be tested, and we are not yet sure which handsets it will work
on. The trick is to put all the phones in access point mode, and then
enable monitor mode between them (perhaps using libpcap on systems
that support it). They will then be able to hear each other's
broadcast packets (even if SSIDs and ESSID's don't match).
If you would like to try some experiments on this front for us on
Android, Nokia S60 phones and/or OpenWRT hardware, that would be very
useful.
> What would it require - Serval on AP's plus Serval on the devices?
That would be ideal. We have plans to setup a similar deployment with
Airstream here in Adelaide once we get the necessary code complete.
> Is there a flavour of Serval for OpenWRT for AP's?
We haven't built it for OpenWRT devices for a while, but it should
work without difficulty.
The ability to work on fairly arbitrary hardware has been a key focus
of the recent development work.
> Any advice welcome...
One other plan we have that may be of interest to you is to use IOIO
boards to attach HopeRF ISM 915MHz band UHF radios to the phones, and
allow much longer range between phones. We are also exploring getting
some custom made Android phones with an Arduino built into the phone,
and that can power and house the HopeRF internally, so that there are
no dangly bits. But we need to raise about US$150k to do that. But
once we do, we will be able to support hundreds to thousands of metres
between phones, which is really game-changing for mesh telephony.
> I've had some good results with both SMESH and WING open source mesh
> networks. I'm currently using Nokia E63 devices with the built-in SIP
> client plus extended batterys on a SMESH network at work. It works well
> most of the time, the odd glitch.
Most interesting.
Paul.
> Thanks for your time...
>
> Regards
>
> Paul Adams
>
>