I have found that whichever Voip program I use, I get poor voice quality on VOIP via UMTS or EDGE, whereas my old Nokia 6124 worked way better. I then saw this post
http://forum.xda-developers.com/showpost.php?p=9579987&postcount=11945
and I wondered if there are any differences between the modems in terms of jitter, because that could be really messing up VOIP streams. My modem is now XXJP2. Has anyone tested various modems for voip reability?
Hi, I have been able to successfully use my SGS for VoIP regardless of the modem version. The program (stack) and codec you are using are more important in this respect. The main difference between Android VoIP solutions and Nokia's SIP is that on android sip drains battery like crazy unless you configure your pbx to connect an extension over TCP rather than UDP. Good luck!
Related
Hi there
In case any one is interested I am trying to develop a voip client and switching back end that will support both GSM and G723 codecs. So far from other sources it seems that only G729 and G711 are supported and the bandwidth usage of these codecs defaets the potential for using voip over 3g due to the high xcost of data. I am hoping to be able to provide acceptable quality with GSM & G723 codecs in around 10-13kbps and 20-23kbps including all of the overheads , this compares to about 31kbps for g729 and 84kbps for g711. I Think you will see the advantages of achieving this.
If anyone else has any experience with g723 or GSM codecs on PPC please let me know.
regards
Charlie
You have a PM.
Hi all,
Thanks for the wonderful forum and contributors.
I managed to test the the VoIP Settings successfully on the HTC Smart Phone (Dopod 830 Pro). It works well with test SIP server and only 1 thing is i am forced to use G711 which produce bad quality over 3G or Wifi due to limited bandwidth. In reality, Without using compressed codec like G723, G729 or GSM, all calls will have bad quality due to bandwidth congested by G711 codec.
1. Is there a way to enable G723 or G729 codec from the WM6, in registery or somewhere ?
2. If above not possible, is there a way to enable GSM instead of G711, Seems that the call is defaulted to G711 when VoIP calling is made and there is no way to set preference on GSM. I saw some post about GSM could be bundled in WM 6.
Thanks you for your time.
Pan
hello
first, I use skype on my hermes 200 adsl connection via a USB or EDGE connection in both cases I had not heard the voice of my interloccuteurs (voice cuts) while they are listening
will become of the weakness of my connection or there a reason?
also, I install skype mobile beta lite (for symbian s60 v.2) on a Nokia N72 to communicate with my hermes 200 but I have not the icon of the call, and in the category of aid on I said that "the call will be possible after the upgrade skype when it will be available in your country"
could I have the icon of the call before skype lite mobile beta is available in my country knowing that they have not yet?
else, the audio chat it was possible between two windows mobile user?
Finally, set apart the MIDs (see here) http://www.intel.com/products/mid/devices.htm , are there other mobile devices capable of video chat skype? if not, they are the other software can do without 3G or wifi, personally I know 5: vochat, octro, tivi, imichat (under symbian), and microsoft portrait
and another that I could not operate: tabletmedia, of whether someone else could get it to tell me how?
videochat mobile
an other at:
www.vzochat.com
Did you manage to get Skype working ok without it crashing out? The last time I tried Sykpe, I had to use Skype v2.2.020 - all the versions after that just crash and quit when I tried to use them to make calls etc.
The problem with the Hermes is that Skype almost completely maxes out the phone's CPU - you are going to struggle to have a decent conversation over Skype even using your ADSL connection.
Yesterday I flashed GINGERBREAD-DS-Beta-20110716 on my 32B to experiment with inbuilt Sip stack and would like to say to would be users that this application in a rooted rom works wonderful. Both over WiFi and 3G. However it does have some limitations like not being able to choose any ports under 1000. ie I would prefer port 443 TCP. Having said that, most users will use port 5060!
All in all, it is very functional and usable. The battery will be consumed more if you tick for receiving calls but consumption is sip server dependent.
I am using it with VoXaLoT with 5 registration.
Note that new HTC android handsets like Desire and Incredible have this feature but limited to making calls over WiFi only.
Hi there,
I was wondering if it is possible to use the download booster feature to do VOIP calls while driving.
I would use the internal modem (with one carrier) and an external 4G modem as WiFi source (with a different carrier) to make the internet signal globally more stable and be able to make VOIP calls while driving (with the handsfree )
It would be really useful, IMHO....
Is there any trick to do that ?
Thank you!
To be perfectly honest, I never saw a difference. i don't really know if this option works and if it does, I can only asume that it's like every cool feat. on the phone. Will only work with samsung software and nothing else.