Sipdroid on HTC Hero - Can't hear received calls

VOIP setup and troubleshooting
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djfatrod
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Joined: Tue Jan 19, 2010 5:21 pm
Location: Sydney

Sipdroid on HTC Hero - Can't hear received calls

Post by djfatrod » Wed Jan 20, 2010 10:34 am

Hi there,

I'm running Exetel HSPA and VOIP by using sipdroid on my HTC Hero.

I'm seem to be able to make VOIP calls ok but when someone calls my VOIP number I can't hear them. My phone rings and I answer it but I can't hear them and they can't hear me.

Would this be a problem with Sipdroid or is there something I have not set up properly?

Any help would be appreciated.

Cheers

djfatrod
Posts: 7
Joined: Tue Jan 19, 2010 5:21 pm
Location: Sydney

Re: Sipdroid on HTC Hero - Can't hear received calls

Post by djfatrod » Thu Jan 21, 2010 5:28 pm

Nobody knows?

jokiin
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Re: Sipdroid on HTC Hero - Can't hear received calls

Post by jokiin » Thu Jan 21, 2010 6:43 pm

djfatrod wrote:Nobody knows?
is this using an Exetel HSPA Optus based or Vodafone based phone service?

tones
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Location: Blaxland

Re: Sipdroid on HTC Hero - Can't hear received calls

Post by tones » Fri Jan 22, 2010 8:35 am

I think the problem is that the Sipdroid software uses the g711 codec and unfortunately this page http://www.exetel.com.au/voip_overview.php says under "Exetel VOIP Via 'Soft Phone' Implementation" that
You may select free software that uses G.711 but be advised that you can only make outgoing calls. Incoming calls cannot be received.
I got around this by using Fring on my Android phone. http://forum.exetel.com.au/viewtopic.php?f=58&t=28593

I find fring is very useable when you have good 3G reception but anything less than 3 bars and the delay seems to be much greater.

Hopefully exetel will make their MOIP software available on the Android platform soon.

djfatrod
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Joined: Tue Jan 19, 2010 5:21 pm
Location: Sydney

Re: Sipdroid on HTC Hero - Can't hear received calls

Post by djfatrod » Fri Jan 22, 2010 9:13 am

Ahh thanks tones, that makes sense.

I actually tried fring first but the lag was pretty bad for me too, and I am in North Sydney! :(

Sipdroid had near perfect call quality so hopefully that will change in the future. I'm now trying SipAgent.

Yes jokiin - Exetel/Optus HSPA.

jokiin
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Re: Sipdroid on HTC Hero - Can't hear received calls

Post by jokiin » Fri Jan 22, 2010 9:50 am

djfatrod wrote:Ahh thanks tones, that makes sense.

I actually tried fring first but the lag was pretty bad for me too, and I am in North Sydney! :(

Sipdroid had near perfect call quality so hopefully that will change in the future. I'm now trying SipAgent.

Yes jokiin - Exetel/Optus HSPA.
what codec options are available in Sipdroid and also does it have the option to add a STUN server?

tones
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Location: Blaxland

Re: Sipdroid on HTC Hero - Can't hear received calls

Post by tones » Fri Jan 22, 2010 9:59 am

I hadn't heard of SipAgent... do you know what codecs it uses?

djfatrod
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Location: Sydney

Re: Sipdroid on HTC Hero - Can't hear received calls

Post by djfatrod » Fri Jan 22, 2010 11:49 am

Not sure what a STUN server is but Sipdroid only supports G.711 I believe.

Quite a few people asking for G.729 too: http://code.google.com/p/sipdroid/issues/detail?id=49

SipAgent doesn't support 729 either :(

Only 711, GSM and Speex

Guess its Fring or nothing atm...

jokiin
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Re: Sipdroid on HTC Hero - Can't hear received calls

Post by jokiin » Fri Jan 22, 2010 12:01 pm

djfatrod wrote:Not sure what a STUN server is but Sipdroid only supports G.711 I believe.

Quite a few people asking for G.729 too: http://code.google.com/p/sipdroid/issues/detail?id=49

SipAgent doesn't support 729 either :(

Only 711, GSM and Speex

Guess its Fring or nothing atm...
there are ways around the problem, using a service like Oztell, Voxalot etc you can handle multiple codecs by transcoding, GSM is a good low bitrate codec suitable for 3G use

tones
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Location: Blaxland

Re: Sipdroid on HTC Hero - Can't hear received calls

Post by tones » Fri Jan 22, 2010 3:22 pm

I know exetel only "support" g729 but what does anyone know what other codecs we can use.

Are GSM or speex available without going through a third party?

Zuriel
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Location: Newcastle

Re: Sipdroid on HTC Hero - Can't hear received calls

Post by Zuriel » Thu Mar 25, 2010 11:06 am

I kept getting codec errors with Sipdroid 1.4, the version currently on the Android Market. Version 1.4.1pre from sipdroid.org works fine, though. Sending and receiving calls through wlan connect using PCMA (64kbit), which I believe is g711.

The codec selection in Sipdroid was reworked two weeks ago and those changes are in 1.4.1pre. Give it a try if you're having problems. You might have to enable the 'allow install of non-Market apps' setting in the Application Settings menu, though.

Also, I believe Fring sends VoIP data to servers in America for transcoding before sending it back to Exetel's SIP server, which can't help but add 200-300ms latency to a conversation.

plasmapuff
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Re: Sipdroid on HTC Hero - Can't hear received calls

Post by plasmapuff » Wed Apr 14, 2010 4:01 pm

I'm having the same problems. :(

I've just got Sipdroid installed on my HTC Tatto (Android 1.6) and using a Exetel DID but am running into a few problems.

I'm entering the details correctly and it is registering. This is all over Wifi, not 3G by the way.

I can make outgoing calls, but I can only hear the other party, they can't hear me.

I can receive incoming calls, but neither party can hear each other after the call connects.

So is Fring the only workaround at this stage?

cheers

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