Hi all,

I have been using SIP / VoIP on my n900 to make calls and my problem is after about 15 minutes of talk time, more recently 18 minutes exactly, my connection dies and I can no longer hear them or them me.

I have tested this with various VoIP providers to confirm that it is not specific to any one provider, but instead my phone. I also have tested this on my laptop.

I sent my phone to be tested at some place that tests hardware and no problems were found with the hardware.

What can I do to rectify the 15 minute call barrier with SIP on my phone? The other problem I have too is that for the wireless broadband to start working again, I need to restart the phone, it appears the network driver gets overloaded.

The one thing that appears to work fine is making cellular calls. I have yet to have call quality drop off after 15 minutes over a cellular connection.

Thanks,

Walter