[asterisk-users] Re: [OT] wi-fi ip phone scenario

[Martin Joseph]

On 2006-10-28 03:51:57 -0700, Alberto Pastore <alberto at msoft-italia.com> said:

> Andrew Joakimsen ha scritto:
>> Are you using WDS? While it won't totally fix every issue, I've found 
>> in my trials that turning off WDS and making sure all the AP were 
>> connected to the same wired network was way more reliable, no more 
>> random unregistartion and issue with registering (still seems to 
>> unregister at times, but re-registartion won't require a reboot).
>> 
> Nope.
> 
> I've a group of 12 indoor colubris access points + 2 outdoor ones,
> and a msc5200 controller unit (the area
> is quite wide with two 4-storey buildings, two 80000 sq.feet hangars,
> one 40000 sq.feet outdoor parking lot)
> no wds, all of them are wired to ethernet switches, no wireless bridging.
> Diversity on all APs, automatic transimt power and channel selection
> (that seems to work when monitoring devices).
> 
> I've tried linksys wip300/wip330, nokia e60/e70, utstarcom f1000/f1000g,
> samsung wip6000.
> 
> The main problem (apart from firmware bugs/crashes which I hope
> should be fixed on newer versions) is that phones tend to stick to
> their associated AP even when it's clearly time to move to the
> next AP: if you watch the phone's rssi indicator while you walk
> inside the coverage area, you can see the value decreasing to
> almost "no signal" before reassociating, which is unacceptable.
> 
> The only phones which seem to deal very well with it are the nokia
> eSeries. Unfortunately they have many other major issues.
> (two weeks ago I gave
> 3 firmware-updated e60 to my bosses to replace their cellphones
> and after one week they almost threw them back to me, complaining
> about the fact they had to reboot the phone at least twice a day
> because it freezed...)
> 
> Also, on asterisk the qualify=2000 sip setting seems to be to low,
> as the console shows repeated LAGGED/UNREACHABLE/REACHABLE notices
> on those phones.
> 
>  From this experience I think wi-fi technology is not really mature enough
> to replace dect right now. Maybe I'm wrong. At least I hope so,
> my bosses are not really happy with the new system.


If you set them all to the same channel (ie not automatic) it will work.

Marty