[asterisk-users] UTStarcom F1000 - WLAN connection unreliable

[Anselm Martin Hoffmeister]

Hi list,

I bought two UTStarcom F1000 phones, pre-equipped with the latest
firmware, including WPA support. Those are configured to register to an
asterisk server on the internet (not LAN), and registration works.
Calling and being called also, with transfer and all bells and whistles.

After a few minutes up to 5 hours (varies widely), the display tells me
that an Accesspoint is not available (although it is, with the other
phone or a laptop). It will only re-find the WLAN after either powering
down the phone, or going into the WLAN settings menu, down to any
setting, OK'ing that and "activating" that WLAN setting.

I used any of the profiles 1 to 4 in the meantime, all the same results.
I tried changing from WPA to WEP-128 to unencrypted WLAN, IP via DHCP
versus static IP, DNS via DHCP (while IP came from DHCP) versus static
DNS server, registering to a domain name versus registering to the
appropriate IP address - to no avail. I had both phones turned on at
times, or only one, that would not make a difference.

This occurs with both phones, and on Accesspoints from Buffalo(OpenWRT),
Fon (LaFonera), AVM (FritzBoxFon 7050), and T-Com (Eumex something). I
did not cross-test all possible combinations - that would be a lot - but
quite some.

Does anyone know of those problems, and possibly have a solution? Or
just a good idea?

Is there a "known reliable setup"? Would anyone care to post what makes
his asterisk work with the F1000 (WLAN settings, and sip.conf settings,
just to go sure?) Would chances of a working setup increase with
asterisk on the LAN (which would make those phones worthless for me...)?

My sip.conf relevant parts are

[sip505]
mailbox=05
callerid=505
type=friend
username=sip505
secret=abcd123
context=sipclient
host=dynamic
nat=yes
disallow=all
allow=alaw
allow=gsm
allow=ulaw

Thanks for all input,

Anselm