I got to say I'm disappointed by the voip quality. Someone wrote, that the quality of voip is as good as normal cellular calls.
That's far from the trooth for me.
I got to say on wifi everything's fine. Skype and sipgate, but on 3G even on HSDPA it's unusuable.
But why? HSDPA support up to 7,2 Mbit/s. Shut be far enough for voip-calling.
Is the uploading the problem? It can't - because both directions are horrible.
What are your experiences on skype or voip on 3G?
Can I change something on the codeces?
Would be happy about some tricks. I thought having a sip-account would be an easy for for people to call me everywhere for free....but it doesn't work, even not when connectet via hsdpa.
By the way, using my SIM vis USB on my PC the connection is quite quick.
I have observed no issues using both Skype and Google Talk using 3G even though my download/upload speeds are limited to 900 kbps and 400 kbps respectively. They are as good as cellular calls, sometimes better.
I have some problems with voip over 3G, it works fabulous with WiFi. It worked fine before but i think i messed something up by loading a lot of dev stuff for testing. The other party hears me fine, I however only hear some voiceblubish noise... I think reflashing will solve this, but anyone has any idea what may be causing this? IT happens on skype and gtalk.
On my n900 skype works fine, but the sip-quality (operator: sigate germany) is quite bad using 3G. so it might be the a matter of the codec. Sip seams to cause more traffic.
Using voip with sip over wifi my nokia 6300i has a better quality (6300i has no 3G so I can't compare that). So when I'm at home I still prefer my 6300i for sip-calls, because of the bad implementation of sip on the n900.
I really like to see nokia to implement the same sip functionality on the n900 as they did on the 6300i!
PS: Offtopic, but I hate the way the n900 displays sip calls. E.g it shows numbers like sip:01234567890@sipgate.de instead of showing the contact from the address book.
I got to say I'm disappointed by the voip quality. Someone wrote, that the quality of voip is as good as normal cellular calls.
That's far from the trooth for me.
I got to say on wifi everything's fine. Skype and sipgate, but on 3G even on HSDPA it's unusuable.
But why? HSDPA support up to 7,2 Mbit/s. Shut be far enough for voip-calling.
Is the uploading the problem? It can't - because both directions are horrible.
What are your experiences on skype or voip on 3G?
Can I change something on the codeces?
Would be happy about some tricks. I thought having a sip-account would be an easy for for people to call me everywhere for free....but it doesn't work, even not when connectet via hsdpa.
By the way, using my SIM vis USB on my PC the connection is quite quick.
Thanks for tips.
Bye
MPW
Don't forget that low latency is very important for VOIP. All the bandwidth in the world will not help, if the bearer (i.e. your cellular network) has a high latency.
Don't forget that low latency is very important for VOIP. All the bandwidth in the world will not help, if the bearer (i.e. your cellular network) has a high latency.
Sure, but skype works and sip doesn't. So it's not a matter of my cellular network, isn't it?
And when I compare my two nokia phones the n900 stays behind.
It's T-Mobile's fault! What the ****, that pinky company really slows the connection down when you're using Skype! Unbelievable.
Your usage of VOIP over their Flat-M tariff appears to be outside the terms of the tariff - so their curtailing of such usage could hardly be described as being: "T-Mobiles fault".
I use T-Mobile Mobile-Broadband-Plus (in the UK) which specifically prohibits VOIP usage - if you want VOIP then their Mobile-Broadband-Max tariff accommodates such usage.
Don't get me wrong - I think the Service providers are taking the p*ss - For example if an account is sold as "UNLIMITED" but there is a little * which says "Max 3GB a month Fair usage applies" then it is NOT UNLIMITED. Be that as it may, if I pay T-Mobile for a 3GB per month data pipe, then it should be up to me how I use that 3GB - browsing, email or VOIP.
Also - as you have found, if your VOIP traffic doesn't look like VOIP traffic because its inside a VPN pipe then you don't get penalised.
