ah.. you're coming right on cue.. :) why is it, that nokias sip
implementation isn't 100% compatible to the standard, and therefore
does not work (handshaking problem) with most sip providers, at
least here in CH? my n95 only works when proxying through a free,
less standards compliant PBX service.. (e.g. pbxes.org). the
problem seems to be well known, but not solved since years?! really
annoying..
It works very well with Sipgate here in Germany. However, I do
have an issue with it with my Wifi setup in France. I took a trace
today and will compare it to what it does when I am in France.
Let's see.
the symptom here with our sip providers is that the client does
register, does receive calls, but fails to handshake when
attempting an outgoing call. see also here for an ack of one of our
sip providers..: http://tinyurl.com/342ccu too bad
sipgate doesn't do business here.. ;)
nice blog post :) funny that you mention the voip over cellular
thing. just today i tested a sip call over 3G, and although it woks
well (except for the huge latency), it indeed seems to drain the
battery incredibly fast when sip is in standby mode.
yep. see this video for example about why ipv6 is so important
to further lower power consumption of "always connected" mobile
phones in future (was already posted here in jaiku by constantine
some weeks ago..)
12 comments so far
ah.. you're coming right on cue.. :) why is it, that nokias sip implementation isn't 100% compatible to the standard, and therefore does not work (handshaking problem) with most sip providers, at least here in CH? my n95 only works when proxying through a free, less standards compliant PBX service.. (e.g. pbxes.org). the problem seems to be well known, but not solved since years?! really annoying..
3 months, 1 week ago by afr.
It works very well with Sipgate here in Germany. However, I do have an issue with it with my Wifi setup in France. I took a trace today and will compare it to what it does when I am in France. Let's see.
3 months, 1 week ago by Mobilesociety.
the symptom here with our sip providers is that the client does register, does receive calls, but fails to handshake when attempting an outgoing call. see also here for an ack of one of our sip providers..: http://tinyurl.com/342ccu too bad sipgate doesn't do business here.. ;)
3 months, 1 week ago by afr.
Interesting tip, thanks! Sipgate works in CH, too if you can live with a German phone number ;-)
3 months, 1 week ago by Mobilesociety.
Here's how the N95 works in practice: http://mobilesociety.typepad.com/mobile_...
3 months, 1 week ago by Mobilesociety.
interesting to see what you uncover from the setup in france!
3 months, 1 week ago by cybette.
@cybette: Ah, nice to see I have raised your interest :-) I will let you know
3 months, 1 week ago by Mobilesociety.
nice blog post :) funny that you mention the voip over cellular thing. just today i tested a sip call over 3G, and although it woks well (except for the huge latency), it indeed seems to drain the battery incredibly fast when sip is in standby mode.
3 months, 1 week ago by afr.
@afr now you know why :-) The frequent signaling has less of an impact over wifi for the battery.
3 months, 1 week ago by Mobilesociety.
yep. see this video for example about why ipv6 is so important to further lower power consumption of "always connected" mobile phones in future (was already posted here in jaiku by constantine some weeks ago..)
3 months, 1 week ago by afr.
link: http://www.youtube.com/watch?v=o5RbyK0m5...
3 months, 1 week ago by afr.
Good link, thanks! Will blog about it soon.
3 months ago by Mobilesociety.